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about.book Page ii Wednesday, July 21, 1999 11:10 AM Am186™CC Microcontroller Router Reference Design User’s Manual © Copyright 1999 Advanced Micro Devices, Inc. All rights reserved. The contents of this document are provided in connection with Advanced Micro Devices, Inc. ("AMD") products.
about.book Page iii Wednesday, July 21, 1999 11:10 AM IF YOU HAVE QUESTIONS, WE’RE HERE TO HELP YOU. The AMD customer service network includes U.S. offices, international offices, and a customer training center. Expert technical assistance is available from the AMD worldwide staff of field application engineers and factory support staff to answer E86™ family hardware and software development questions. Frequently accessed numbers are listed below.
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about.book Page v Wednesday, July 21, 1999 11:10 AM Contents About the Am186™CC Microcontroller ISDN-to-Ethernet Router Reference Design Theory of Operation .......................................................................................... xiii Am186CC Microcontroller Router Reference Design Features ....................... xiii ISDN Background ...............................................................................................xv Documentation ............................................
about.book Page vi Wednesday, July 21, 1999 11:10 AM Chapter 2 System Features and Components Layout and Placement........................................................................................ 2-2 Power Supply.................................................................................................... 2-7 5 V @ 3 A ..................................................................................................... 2-7 3.3 V @ 500 mA .......................................................
about.book Page vii Wednesday, July 21, 1999 11:10 AM Appendix A Default Jumper Settings Appendix B Am186CC Microcontroller Router Reference Design PIO Resources, Chip Selects, Interrupts, and LEDs Appendix C Bill of Materials Appendix D PLD Equations IOM-2/GCI Mode............................................................................................. D-2 SBP/PCM Mode ...............................................................................................
about.book Page viii Wednesday, July 21, 1999 11:10 AM List of Figures Figure 0-1. Router Block Diagram........................................................................................ xii Figure 0-2. ISDN Reference Point Diagram ......................................................................... xv Figure 2-1. Router Reference Design Component Layout................................................... 2-3 Figure 2-2. Am186CC Microcontroller Block Diagram .......................................
about.book Page ix Wednesday, July 21, 1999 11:10 AM List of Tables Table 0-1. Notational Conventions ................................................................................... xviii Table 1-1. Installation Troubleshooting.............................................................................. 1-6 Table 2-1. Am186CC Microcontroller Router Reference Design Major Components ...... 2-2 Table 2-2. Configuration Jumper Functions .............................................................
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about.book Page xi Wednesday, July 21, 1999 11:10 AM About the Am186™CC Microcontroller ISDN-to-Ethernet Router Reference Design The AMD Am186CC microcontroller ISDN-to-Ethernet router reference design (hereafter referred to as the Am186CC microcontroller router reference design) is used for customer development of ISDN and Ethernet interfaces, High-Speed universal asynchronous receiver/transmitters (UARTs), USB ports, Flash memory, and plain old telephone Service (POTS) circuitry.
about.book Page xii Wednesday, July 21, 1999 11:10 AM For more information about the Am186CC microcontroller router reference design features, refer to “Am186™CC Microcontroller Router Reference Design Features” on page xiii, and Chapter 2, “System Features and Components”. Figure 0-1.
about.book Page xiii Wednesday, July 21, 1999 11:10 AM Theory of Operation The reference design demonstrates the Am186CC microcontroller’s functionality in an ISDN/Ethernet application. You can use this board as a reference to create your own designs. The small size and simplicity of this design highlight the benefits of the Am186CC microcontroller’s many integrated peripherals.
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about.book Page xv Wednesday, July 21, 1999 11:10 AM ISDN Background Integrated services digital network (ISDN) is an alternative to analog phone lines. ISDN provides greater performance than analog and is still affordable to consumers.
about.book Page xvi Wednesday, July 21, 1999 11:10 AM Documentation The Am186™CC Microcontroller ISDN-to-Ethernet Router Reference Design User’s Manual provides information on the design and function of the Am186CC microcontroller router reference design. About This Manual Chapter 1, “Quick Start” helps you quickly set up and start using the Am186CC microcontroller router reference design.
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about.book Page xviii Wednesday, July 21, 1999 11:10 AM • Lucent Technologies T7237 ISDN U-Interface Transceiver Data Sheet Lucent Technologies, order #DS97-411ISDN, available at www.lucent.com • ISDN Concepts, Facilities, and Services Gary C. Kessler, ISBN: 0-07-034242-3 • ISDN For Dummies, 2nd Edition David Angell, ISBN: 0-7645-0064-3 • ISDN Implementor’s Guide: Standards, Protocols, Services Charles K.
about.book Page 1 Wednesday, July 21, 1999 11:10 AM Chapter 1 Quick Start This chapter provides information to help you quickly set up and start using the Am186CC microcontroller router reference design. The Am186CC microcontroller router reference design is supported by the E86MON board-resident debugger. The E86MON boot monitor software enables you to load, run, and debug programs on the Am186CC microcontroller router reference design.
ch1.fm Page 2 Thursday, July 22, 1999 11:43 AM Connecting to a PC Via a Serial Port Follow the steps below to connect the Am186CC microcontroller router reference design to your PC via your PC’s serial port.
ch1.fm Page 3 Thursday, July 22, 1999 11:43 AM 3. Apply power to the board by connecting the power supply to an electrical outlet. When the board is powered up, LED CR8 (at location H-5 in Figure 2-1 on page 2-3) comes on for one second and then goes off. This indicates that the U transceiver (T7237A at location H-5 in Figure 2-1 on page 2-3) has powered up. The same thing happens when you reset the board.
about.book Page 4 Wednesday, July 21, 1999 11:10 AM Connecting to a PC Via a USB port To connect the Am186CC microcontroller router reference design to your PC’s USB port: 1. Insert the flat end of your USB cable into the USB port on your PC. 2. Connect the other end of the USB cable into the Am186CC microcontroller router reference design’s USB connector (see P9 at J-1 in Figure 2-1 on page 2-3) that is located near the corner of the board and is labeled “USB”. 3.
about.book Page 5 Wednesday, July 21, 1999 11:10 AM Connecting a Test Interface Port To connect the test interface port (TIP) debug board to the Am186CC microcontroller router reference design: 1. Plug the TIP connector into the TIP board with the tab facing towards the left. 2. Plug the other end of the connector into the Am186CC microcontroller router reference design TIP connector (see P10 at location L-7 in Figure 2-1 on page 2-3) with the tab facing up.
about.book Page 6 Wednesday, July 21, 1999 11:10 AM Troubleshooting Installation Problems Table 1-1. Installation Troubleshooting 1-6 Problem Solution Nothing happens when pushing the RESET button. Sometimes it is difficult to make a good connection when pushing the small RESET button. If all else fails, remove the power supply from the AC electrical outlet and disconnect and reconnect the power supply. The LEDs light up when the reset is successful.
about.book Page 7 Wednesday, July 21, 1999 11:10 AM For More Information... If you need more information about: • Am186CC microcontroller router reference design hardware, see Chapter 2. • E86MON software, see the E86MONTM Software User’s Manual included in your kit. • Problems with the reference design or the E86MON software, see the customer support information on page iii. • 7KH $P && PLFURFRQWUROOHU URXWHU UHIHUHQFH GHVLJQ¶V FRPSRQHQW OD\RXW see Chapter 2.
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about.book Page 1 Wednesday, July 21, 1999 11:10 AM Chapter 2 System Features and Components The Am186CC microcontroller router reference design is a single-sided, 6.5 x 9.75-inch, printed circuit board that integrates the Am186CC microcontroller and I/O interfaces onto one board, enabling you to develop ISDN, Ethernet, HighSpeed UART, USB, and POTS applications.
about.book Page 2 Wednesday, July 21, 1999 11:10 AM Layout and Placement Table 2-1 shows major Am186CC microcontroller router reference design components and their location in Figure 2-1 on page 2-3. Table 2-2 on page 2-4 and Table 2-3 on page 2-4 show configuration jumper information. Table 2-4 on page 2-5 shows configuration resistor population information. References to schematic sheet numbers refer to the schematics document included in your kit. Table 2-1.
about.book Page 3 Wednesday, July 21, 1999 11:10 AM L K J I H G F E D C B A 1 2 3 4 5 6 7 8 9 Figure 2-1.
about.book Page 4 Wednesday, July 21, 1999 11:10 AM Table 2-2. Configuration Jumper Functions Part Function Description Figure 2-1 Reference Schematic Sheet # JP1 Flash memory selection JP1 selects the Flash memory CE input, either sourced by the TIP or by the router board’s Am186CC microcontroller. This allows the TIP to program the Am29F800 Flash memory on the router board. L-5 13 JP5 8/16-bit boot Selects 8- or 16-bit boot from UCS space. Enables booting from 8-bit TIP memory.
about.book Page 5 Wednesday, July 21, 1999 11:10 AM Table 2-4. Configuration Resistor Population Functionality Populate Do Not Populate Schematic Sheet # Comments ISDN S R137, R139 R_UFS, R136, R138 6, 9 Normal operation ISDN U R_UFS, R136, R138 R137, R139 6, 9 The Am186CC microcontroller router reference design is shipped configured for the S/T interface. To use the U interface, make the resistor changes and do not access the Am79C32A chip with software.
about.book Page 6 Wednesday, July 21, 1999 11:10 AM Table 2-4. Configuration Resistor Population (Continued) Functionality Populate Do Not Populate Schematic Sheet # Comments Am186CC microcontroller transmit to DSLAC using TXDD R170, R171, R172, R167 R166, R169 2, 14 See “DSLAC PCM Interface” on page 2-25.
about.book Page 7 Wednesday, July 21, 1999 11:10 AM Power Supply The Am186CC microcontroller router reference design is powered by a universal power supply that converts 100–200 VAC power to 12 VDC, 2.5 A. The 12 V enters the Am186CC microcontroller router reference design through a 5.5-mm barrel connector, where the center post is VCC and the outer ring is GND. From the 12-VDC input, the on-board power supply provides 5 V, 3.3 V, –5 V, –24 V, and –70 V.
about.book Page 8 Wednesday, July 21, 1999 11:10 AM –24 V @ 50 mA and –70 V @ 60 mA NOTE: See sheet 11 in the schematics for power supply circuits. A switching flyback circuit from the 12-V source generates the –24 V and the –70 V. These outputs are routed to the Am186CC microcontroller router reference design and are used in the POTS interface. –5 V @ 200 mA NOTE: See sheet 11 in the schematics for power supply circuits. A 5-V buck-boost switching circuit from the 12-V source generates the –5 V.
about.book Page 9 Wednesday, July 21, 1999 11:10 AM Am186™CC Microcontroller The Am186CC microcontroller router reference design supports a 160-pin plastic quad flat pack (PQFP) Am186CC microcontroller operating at 50 MHz. The integrated features of the Am186CC microcontroller provide a glueless interface to DRAM, SRAM, and Flash memory.
about.book Page 10 Wednesday, July 21, 1999 11:10 AM Figure 2-2 shows the Am186CC microcontroller block diagram.
about.book Page 11 Wednesday, July 21, 1999 11:10 AM Am186™CC Microcontroller Clocking NOTE: See sheet 10 of the schematics for clock information. The Am186CC microcontroller router reference design uses an internal 2x PLL to provide a 48-MHz system clock and the required 48-MHz USB clock. The presence or absence of resistors R51, R52, R53, and R54 determine the CPU and USB clocking speeds. R52 is at location F-6. R51, R53, and R54 are located at location E-8.
about.book Page 12 Wednesday, July 21, 1999 11:10 AM Am186™CC Microcontroller Reset NOTE: See sheet 10 in the schematics for the reset circuitry. The Am186CC microcontroller requires the RES input to be asserted for at least 1 ms to allow the internal circuitry to stabilize. The Am186CC microcontroller router reference design uses an external device that monitors the 3.3-V VCC to provide a reset output with an internal 21-ms RC delay to drive the 3.3-V RES input to the Am186CC microcontroller.
about.book Page 13 Wednesday, July 21, 1999 11:10 AM System Memory The Am186CC microcontroller router reference design uses DRAM and Flash memory for system memory. Figure 2-3 shows the DRAM and Flash memory map. A small SRAM device is also used as an Ethernet packet buffer. FFFFFh Flash Memory 80000h 7FFFFh DRAM Memory 00000h Figure 2-3. DRAM and Flash Memory Map DRAM/SRAM Memory NOTE: See sheet 4 in the schematics for the DRAM and SRAM circuitry.
about.book Page 14 Wednesday, July 21, 1999 11:10 AM Flash Memory NOTE: See sheet 4 in the schematics for the Flash memory circuitry. A single, surface-mount, TSOP Am29F800, 55-ns, 8-Mbit Flash memory device allows for zero wait state operation at 50 MHz. The Am29F800 Flash memory CE is connected to chip select UCS and mapped to address range 0x80000-0xFFFFFh. This is 4 megabits of addressable memory that only allows access to one-half of the Am29F800 device.
ch2.fm Page 15 Thursday, July 22, 1999 11:44 AM 10BaseT Ethernet Interface NOTE: See sheet 4 in the schematics for the Ethernet SRAM packet buffer circuitry and sheet 3 for the Ethernet controller circuitry. The Am186CC microcontroller router reference design uses an AMD Am79C961A PCnet-ISA II Ethernet controller configured in bus master mode for its Ethernet interface.
about.book Page 16 Wednesday, July 21, 1999 11:10 AM Table 2-7. RJ-45 Connector Pin Functions Pin Number Function 1 TX+ 2 TX– 3 RX+ 4 Not used 5 Not used 6 RX– 7 Not used 8 Not used Three LEDs (CR1–CR3 at location K-9) provide status information for the Ethernet port. The function of these LEDs is controlled by the ISA bus configuration registers on the PCnet-ISA II Ethernet controller and can be modified through software or the EEPROM.
about.book Page 17 Wednesday, July 21, 1999 11:10 AM The Ethernet controller is a bus mastering device and DMAs directly to packet buffer memory space. The Ethernet controller supports DMA to SRAM, not DRAM. Because main system memory is DRAM, the 64K x 16 SRAM must be used as packet buffer memory. A small amount of glue logic is required to interface the PCnet-ISA II Ethernet controller to the Am186CC microcontroller because the PCnet-ISA II Ethernet controller is an ISA peripheral device.
about.book Page 18 Wednesday, July 21, 1999 11:10 AM ISDN Interface The Am186CC microcontroller router reference design provides both ISDN S/T and U interfaces. The four-wire 2B+D S/T interface connects through an RJ-45 jack (P2 at location F-1) by using the Am186CC microcontroller with the AMD Am79C32A digital subscriber controller (DSC) circuit. This connection provides the path between the router and an NT1 device. The S/T interface is the ISDN interface commonly used in Europe.
about.book Page 19 Wednesday, July 21, 1999 11:10 AM ISDN S/T Interface NOTE: See sheet 5 in the schematics for the ISDN S/T interface circuitry. The glueless connection between the Am186CC microcontroller and the Am79C32A ISDN DSC provides the four-wire 2B+D S/T interface. The DSC serial interface is capable of being configured as an IOM-2 or SBP serial microprocessor interface.
about.book Page 20 Wednesday, July 21, 1999 11:10 AM ISDN U Interface NOTE: See sheet 6 in the schematics for the ISDN U interface circuitry. The Lucent T7237A U transceiver provides the two-wire 2B+D U interface for terminal adapter functionality. The T7237A processes the ISDN BRI bit stream that consists of two 64-Kbit/s B channels and a single 16-Kbit/s D channel.
about.book Page 21 Wednesday, July 21, 1999 11:10 AM In the ISDN U configuration, the Am186CC microcontroller uses the SSI and INT2 as an edge-triggered, active Low interrupt to configure the T7237A device though its serial microprocessor interface. The T7237A 2B+D channel communication is performed across the T7237A TDM bus, which is directly connected to Am186CC microcontroller HDLC Channel A, configured in PCM mode. The T7237A device provides a 2.
about.book Page 22 Wednesday, July 21, 1999 11:10 AM Serial PC Interface NOTE: See sheet 12 in the schematics for the serial PC interface circuitry. The high-speed serial port may be used for communication with a PC. The Sipex high-speed RS-232 transceiver (at location J-9) is used to provide serial data rates up to 460 Kbaud. The DCE serial connection is made through a standard female DB-9 connector (at location H-9), which uses a straight-through serial cable (no null-modem).
about.book Page 23 Wednesday, July 21, 1999 11:10 AM USB PC Interface NOTE: See sheet 12 in the schematics for the USB PC interface circuitry. The Am186CC microcontroller router reference design provides a full-speed (12 Mbit/s) peripheral USB port that enables the reference design to be used as a self-powered USB peripheral. You can configure the reference design to use the Am186CC microcontroller fullspeed (12 Mbit/s) USB peripheral controller’s integrated USB transceiver.
about.book Page 24 Wednesday, July 21, 1999 11:10 AM Detach 1. Am186CC microcontroller polls PIO42 for a logic Low level to detect a disconnect condition from the host/hub. 2. The Am186CC microcontroller three-states USBD+ and USBD– in response to the disconnect. 3. The Am186CC microcontroller drives PIO43 to a logic Low level, which disables Q1 and removes the pullup (R67) from USBD+.
about.book Page 25 Wednesday, July 21, 1999 11:10 AM POTS Interface NOTE: See sheets 7, 8, and 9 of the schematics for POTS circuitry. The Am186CC microcontroller router reference design provides two POTS connections on RJ-11 connectors (P4 and P5 at locations D-1 and B-1 respectively). These POTS connections are used to connect standard POTS telephones.
about.book Page 26 Wednesday, July 21, 1999 11:10 AM The S/T or U transceiver provides the clock and frame sync for the PCM interface and transfers data between the ISDN interface and the POTS interface. MCLK is the master clock used to drive the DSLAC device’s internal DSP. MCLK must be 2.048 MHz or 4.096 MHz and must be synchronous to the DSLAC’s PCLK. The MCLK input is derived from whichever ISDN transceiver is being used as the upstream ISDN device.
about.book Page 27 Wednesday, July 21, 1999 11:10 AM Using HDLC channel D for Am186CC microcontroller-to-DSLAC communication causes the Low-Speed UART to be non-functional (the HighSpeed UART is functional). The HDLC channel D pins are multiplexed with the UART. The High-Speed UART flow control is also unavailable because the HDLC channel D time-slot control is multiplexed with one of these pins. The UART flow control signals (channel C) are used for the High-Speed UART.
about.book Page 28 Wednesday, July 21, 1999 11:10 AM Debug Circuitry The Am186CC microcontroller router reference design provides the following debug circuitry. TIP Interface NOTE: See sheet 13 in the schematics for the TIP interface connector circuitry. Several debug and configuration options make the Am186CC microcontroller router reference design a useful tool for the development of specific applications.
about.book Page 29 Wednesday, July 21, 1999 11:10 AM The interface between the reference design and the TIP is set up so it does not use many Am186CC microcontroller resources. The general interface between the Am186CC microcontroller router reference design and TIP is as follows: • A19–A0, AD7–AD0, RD, and WLB on the Am186CC microcontroller are used to provide communication between the TIP peripherals and the router reference design.
ch2.fm Page 30 Wednesday, July 21, 1999 3:44 PM RESCON Configuration NOTE: See sheet 10 in the schematics for RESCON information. The Reset Configuration (RESCON) register (located in the Am186CC microcontroller) provides a way to make design-specific hardware configuration information available to software. The RESCON register is read from AD15-AD0 after a reset. AD15 corresponds to bit 15 of the RESCON register and AD0 corresponds to bit 0.
about.book Page 31 Wednesday, July 21, 1999 11:10 AM • Bit 7 is the TIP bit. It indicates that the TIP board is installed and available for use. • Bits 6-4 are 0 and reserved for future use. • Bits 3-0 are the Board Configuration Bits. They identify a population configuration (option) for the board. Each reference design has its own configuration assignments. D0 and D2 are populated by R100 and R98 respectively (at location L-7) to set the board configuration at 0101 binary.
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about.book Page 1 Wednesday, July 21, 1999 11:10 AM Appendix A Default Jumper Settings Table A-1 contains the default jumper settings. Table A-1. Default Jumper Settings Jumper Number1 Position JP1 1-2 NC 2-3 Connected 1-2 NC 2-3 Connected JP5 1. Pin 1 of JP1 is the pin farthest from the TIP connector. Pin 1 of JP5 is the pin farthest from the high-speed serial port connector.
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about.book Page 1 Wednesday, July 21, 1999 11:10 AM Appendix B Am186™ CC Microcontroller Router Reference Design PIO Resources, Chip Selects, Interrupts, and LEDs This appendix provides Am186CC microcontroller router reference design PIO resources, chip selects, interrupts, and LED status in Table B-1 through Table B-4. Table B-1.
about.book Page 2 Wednesday, July 21, 1999 11:10 AM Table B-1. PIO Resource Assignments (Continued) PIO Signal Function PIO38 CTS_B T7237A SCLK CNTL PIO40 RCLK_B POTS Line 1 ringing signal PIO41 TCLK_B POTS Line 2 ringing signal PIO2 PCS5 DTMF1 OE PIO3 PCS4 DTMF2 OE PIO44 CTSC High-Speed UART CTSHU PIO45 RTRC High-Speed UART RTRHU Table B-2.
about.book Page 3 Wednesday, July 21, 1999 11:10 AM Table B-3. Interrupt Assignments (Continued) Interrupt Device Polarity INT0 TIP Ethernet Active High edge INT7 TIP serial port 1 Active High edge INT8 TIP serial port 0 Active High edge INT4 DTMF 1 Active High INT5 DTMF 2 Active High INT1 USB Internal Table B-4. LED Status LED Status CR11 Ethernet status - indicates a good 10BaseT connection. Corresponds to the PCnet-ISA II LED0 signal name.
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about.book Page 1 Wednesday, July 21, 1999 11:10 AM Appendix C Bill of Materials This appendix provides the Am186CC microcontroller router reference design bill of materials. Table C-1. Router Reference Design BOM Item Qty Reference Part Part Spec. PCB Footprint 1 4 CBX1, CAX1, CBX2, CAX2 4700 pF ± 10%, X7R, 100V 805 2 2 CDCR_1, CDCR_2 0.022 µF ± 10%, X7R, 100V 805 3 2 CDC_1, CDC_2 0.56 µF ± 10%, X7R, 100V 1206 4 2 CHP1, CHP2 0.047 µF ± 10%, X7R, 100V 1206 5 2 CRT1, CRT2 1.
about.book Page 2 Wednesday, July 21, 1999 11:10 AM Table C-1. Router Reference Design BOM (Continued) Item Qty Reference 10 40 11 2 12 Part Spec. PCB Footprint C5, C8, C9, C10, 0.1 µF C11, C16, C17, C29, C30, C31, C33, C34, C35, C36, C37, C38, C39, C40, C41, C42, C43, C44, C45, C46, C47, C61, C62, C63, C64, C65, C66, C67, C74, C76, C90, C91, C98, C99, C110, C116 ± 10%, X7R, 100V 805 C6, C7 22 µF Tantalum, C CASE, 16V C-CASE 2 C15, C14 680 pF ± 10%, X7R, 50V 805 13 1 C18 1.
about.book Page 3 Wednesday, July 21, 1999 11:10 AM Table C-1. Router Reference Design BOM (Continued) Item Qty Reference Part Part Spec. PCB Footprint 20 2 C55, C59 0.001 µF ± 10%, X7R, 50V 805 21 1 C58 4.7 µF Tantalum, C CASE, 16V C-CASE 22 6 C69, C70, C71, 22 pF C72, C111, C112 ± 10%, X7R, 50V 805 23 1 C73 1.
about.book Page 4 Wednesday, July 21, 1999 11:10 AM Table C-1. Router Reference Design BOM (Continued) Item Qty Reference Part Part Spec. PCB Footprint 32 17 C122, C123, C124, C125, C126, C127, C128, C129, C130, C131, C132, C133, C134, C135, C136, C140, C145 0.
about.book Page 5 Wednesday, July 21, 1999 11:10 AM Table C-1. Router Reference Design BOM (Continued) Item Qty Reference Part Part Spec. PCB Footprint 44 2 FR1, FR2 FUSE RESISTOR Microelectronic Modules Corp. L11A050AA TH-6 45 1 F1 FUSE Raychem TR600-150 TH-2 46 1 F2 2A Bussmann 3216FF2.
about.book Page 6 Wednesday, July 21, 1999 11:10 AM Table C-1. Router Reference Design BOM (Continued) Item Qty Reference Part Part Spec. PCB Footprint 59 2 RD1, RD2 22.1K ± 1%, 1/10W 805 60 2 RRT1_1, RRT1_2 511K ± 1%, 1/10W 805 61 2 RRT2_1, RRT2_2 12.
about.book Page 7 Wednesday, July 21, 1999 11:10 AM Table C-1. Router Reference Design BOM (Continued) Item Qty Reference Part Part Spec. PCB Footprint 70 6 R17, R44, R45, R47, R48, R57 100K ± 5%, 1/10W 805 71 2 R18, R20 3.6K ± 1%, 1/4W 1206 72 2 R19, R22 100 ± 1%, 1/8W 1206 73 3 R21, R105, R106 22.6 ± 1%, 1/2W 1210 74 1 R23 22.6 ± 1%, 1/8W 1210 75 4 R24, R25, R26, R27 68 ± 5%, 1/10W 805 76 1 R28 17.
about.book Page 8 Wednesday, July 21, 1999 11:10 AM Table C-1. Router Reference Design BOM (Continued) Item Qty Reference Part Part Spec. PCB Footprint 90 1 R67 1.
about.book Page 9 Wednesday, July 21, 1999 11:10 AM Table C-1. Router Reference Design BOM (Continued) Item Qty Reference Part Part Spec.
about.book Page 10 Wednesday, July 21, 1999 11:10 AM Table C-1. Router Reference Design BOM (Continued) Item Qty Reference Part Part Spec. 119 2 U21, U22 DTMF M8870-01 Teltone M-8870-01SM SOIC-18 120 1 U24 Am29F800 TSOP Am29F800BT-70EC TSOP-48 121 1 U25 DRAM 256X16 SOJ Mosel Vitelic V53C16258HK40 SOJ-40 122 1 U27 64Kx16 SRAM Samsung KM6161000BLT-5L TSOP II-44 123 1 U29 TLC7733ID TI TLC7733ID SOIC-8 124 1 U30 M5V REGULATOR Micrel MIC45755.
about.book Page 11 Wednesday, July 21, 1999 11:10 AM Table C-1. Router Reference Design BOM (Continued) Item Qty Reference Part Part Spec. PCB Footprint 136 1 X3 15.36011MHz Saronix SRX5144 HC-49 137 1 X4 3.58MHz Ecliptek EC23.579545M-ITR HC-49 138 1 X5 20.000MHz Ecliptek EC220.000M-CL150 TH-2 139 1 X6 24.000 MHz Ecliptek EC224.000M-CL150 TH-2 1. This part is not populated.
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about.book Page 1 Wednesday, July 21, 1999 11:10 AM Appendix D PLD Equations This appendix contains a listing of PLD equations for the PLD (U43) located at location E-4 on the Am186CC microcontroller router reference design. Two sets of PLD equations are included. The first equations are for running in IOM-2/GCI mode. The second set of equations are for running in SBP/PCM mode.
about.book Page 2 Wednesday, July 21, 1999 11:10 AM IOM-2/GCI Mode """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" " U43 PLD code for the Am186CC Router Reference Design Revision 2.0 " " " " An AMD PLCC-28 PAL26V12 provides the logic functions needed for the POTS interface.
about.book Page 3 Wednesday, July 21, 1999 11:10 AM " " """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" " Declarations " """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" INPUT /pcs4; "PIN 9 PCS4# used for DTMF output enable for channel 2 INPUT /pcs5; "PIN 8 PCS5# used for DTMF output enable for channel 1 INPUT mclk_c32; "PIN 1 12.
about.book Page 4 Wednesday, July 21, 1999 11:10 AM END divider; STATE_MACHINE DPLL CLOCKED_BY mclk_c32 RESET_BY resout; " Jitter reduction circuit, implemented as free running up-counter, " that counts 15, 16 or 17 clock cycles to form a window.
about.book Page 5 Wednesday, July 21, 1999 11:10 AM goto ten; STATE ten: pclk=0; goto eleven; STATE eleven: pclk=0; goto twelve; STATE twelve: pclk=0; goto thirteen; STATE thirteen: pclk=0; goto fourteen; STATE fourteen: pclk=0; goto fifteen; " States 15 to 17 form a window to catch the BCLK signal STATE fifteen: " max.
about.book Page 6 Wednesday, July 21, 1999 11:10 AM goto seventeen; ELSE pclk=1; goto one; END IF; STATE seventeen: " min.
about.book Page 7 Wednesday, July 21, 1999 11:10 AM SBP/PCM Mode """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" " U43 PLD code for the Am186CC Router Reference Design Revision 2.0 " " " " An AMD PLCC-28 PAL26V12 provides the logic functions needed for the POTS interface.
about.book Page 8 Wednesday, July 21, 1999 11:10 AM OUTPUT " dtmf2oe; "PIN 19 DTMF Channel 2 output enable OUTPUT " dtmf1oe; "PIN 23 DTMF Channel 1 output enable OUTPUT " mclk4; "PIN 18: 4.096 MHz Am79C031 MCLK input OUTPUT " pclk; "PIN 25: modified BCLK signal " Equations " """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" dtmf2oe = pcs5; "inverted pcs5 to create active high OE when tones are transmitted. dtmf1oe = pcs4; transmitted.
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about.book Page 14 Wednesday, July 21, 1999 11:10 AM pclk=0; goto fiftyfive; STATE fiftyfive: pclk=0; goto fiftysix; STATE fiftysix: pclk=0; goto fiftyseven; STATE fiftyseven: pclk=0; goto fiftyeight; STATE fiftyeight: pclk=0; goto fiftynine; STATE fiftynine: pclk=0; goto sixty; STATE sixty: pclk=0; goto sixtyone; STATE sixtyone: pclk=0; goto sixtytwo; STATE sixtytwo: pclk=0; goto sixtythree; " States 63 to 65 form a window to catch the PCLK signal STATE sixtythree: " max.
about.book Page 15 Wednesday, July 21, 1999 11:10 AM goto sixtyfour; ELSE pclk=1; goto one; " return to state one if BCLK is high END IF; STATE sixtyfour: " If the DPLL is synchronized, the state machine is reset to state one in this stages. IF pclk_c32=1 THEN pclk=0; goto sixtyfive; ELSE pclk=1; goto one; END IF; STATE sixtyfive: " min.
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about.book Page 1 Wednesday, July 21, 1999 11:10 AM Appendix E Glossary of Terms 2B+D - Describes the BRI configuration for ISDN of two bearer channels and one D channel. 2B1Q - Two binary, one quaternary, data format for the U-interface. One quaternary symbol (±3, ±1) represents two bits. 10BaseT Ethernet - A popular type of Ethernet network using twisted-pair cable and RJ-45 connectors. (See RJ-45.) B Channel - Bearer channel, 64kbps voice/data channel for ISDN. bps - Bits per second.
about.book Page 2 Wednesday, July 21, 1999 11:10 AM Ethernet - A type of network capable of high-speed digital data communication. Typical speeds range from 10-Mbit/s to 100-Mbit/s. FCC - Federal Communications Commission. Regulates the U.S. telephone industry. GCI - General Circuit Interface. HDLC - High-Level Data-Link Controller. ISO standard for layer-2 data bitoriented communications protocol. HDLC is used for LAPB, LAPD, V.120 and SS7. IDC - ISDN Data Controller.
about.book Page 3 Wednesday, July 21, 1999 11:10 AM PBX - Private Branch Exchange. Customer site switch. PCM - Pulse Code Modulation. PIO - Programmable Input/Output. POTS - Plain Old Telephone Service. The analog telephone service found in many homes and businesses today. R -Interface - Reference point between non-ISDN devices and terminal adapters. RJ-45 - An 8-conductor connector often used for Ethernet connections. Looks similar to a standard telephone jack and plug.
about.book Page 4 Wednesday, July 21, 1999 11:10 AM TDM - Time Division Multiplexing. TE - Terminal Equipment. Equipment that may be placed on ISDN (directly or indirectly). TE1 - Terminal Equipment Type 1. ISDN compatible terminal equipment. TE2 - Terminal Equipment Type 2. Non-ISDN compatible terminal equipment, which requires a terminal adapter. U-interface - Reference point comprising the two-wire interface between the LE and NT device. USB - Universal serial bus.
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about.book Page 3 Wednesday, July 21, 1999 11:10 AM USB, B-1 literature support, iii M memory DRAM, 2-13 Flash, 2-14 mapping, 2-16 SRAM, 2-13 P PC connecting router board to, 1-2 peripheral controller, 2-23 PIO resource assignments, B-1 PLD equations, D-1 POTS interface, 2-25 DSLAC PCM interface, 2-25 DTMF, 2-27 Power supply -24 V @ 50 mA, 2-8 3.
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