DSB75 Development Support Board Rev.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s Document Name: DSB75 Development Support Board Rev. B1 Hardware Description Version: v08 Date: September 29, 2005 DocId: DSB75_hd_v08 Status: Strictly confidential / Released General Notes Product is deemed accepted by Recipient and is provided without interface to Recipient’s products. The documentation and/or Product are provided for testing, evaluation, integration and information purposes.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s Contents 0 Document History .........................................................................................................7 1 Introduction .................................................................................................................11 2 3 1.1 Supported Products .............................................................................................11 1.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.14.4 3.14.5 4 5 6 4.1 Indication of Asynchronous Serial Interface Signals............................................66 4.2 Indication of GPIO Signals and SYNC.................................................................66 4.3 Indication of Power ..............................................................................................67 4.4 Indication of I²C Lines .............................
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s Figure 19: Location of DAI connector X703 ........................................................................... 39 Figure 20: Example for connecting measurement equipment................................................ 40 Figure 21: USB device interface.............................................................................................
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s Table 10: Pin assignment of 2nd serial interface COM2 (X202) ............................................ 32 Table 11: Pin assignment of debug interface COM3 (X205).................................................. 33 Table 12: Pin assignment of handset audio interface 1 (X502).............................................. 35 Table 13: Pin assignment of audio interface 2 (X700, X701) ...........................
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 0 s Document History Preceding document: "DSB75 Development Support Board Rev B1 Hardware Description", v07 New document: "DSB75 Development Support Board Rev. B1 Hardware Description" Version v08 Chapter What is new 3.6.2 Added description of EPREF. 3.6.2.2, 3.6.3 Added information about required bias voltage for speakerphone operations. 3.7 Table 14: Updated pin description of PCM interface.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s Preceding document: "DSB75 Development Support Board Rev B1 Hardware Description", v03 New document: "DSB75 Development Support Board Rev. B1 Hardware Description" v04 Chapter What is new 1.4 Updated table: “Terms and Abbreviations” 2.5 Deleted “for ORGA test device” in table 2, row “SIM” 3.3 Deleted line: “It is important to switch the used GPIO lines to the LED driver (S450 – S459 pos.3).” 3.6.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s Preceding document: ”DSB75 Development Support Board Hardware Description", v02 New document: "DSB75 Development Support Board Rev. B1 Hardware Description" v03 Chapter What is new 2.2 Modified figure: “System overview” 2.3 Modified figure: “Placement of connectors, switches, jumpers, LEDs and adjustable resistors” 2.4 Modified figure: “Block diagram” 3.3 Modified figure: “GPIO circuit” 3.5.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released Chapter s What is new deactivated by the host application (e.g. if the terminal program is closed). In later releases of DSB75 this problem will be solved.” Modified figure: “Turn on circuit”. 6.1.2 Added information about automatic restart of the module. 7 Updated technical data. 7.1 More detailed list of cable requirements. 8.2 Modified figures “Schematic sheet1” … “Schematic sheet7” 8.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 1 s Introduction This document describes the DSB75 Development Support Board Rev. B1 The DSB75 Development Support Board is designed to assist system integrators in developing and evaluating products based on Siemens GSM modules. Furthermore, it is part of the Siemens reference equipment submitted for Type Approval GSM modules.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 1.3 Scope of Delivery Quantity 1.
DSB75 Development Support Board Rev.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 2 General Overview 2.1 Key Features at a Glance s Table 1: Key features Feature Implementation GSM module interface • Direct connection and mechanical fixing of GSM module via 80-pin board-to-board connector and screws. Power supply • Laboratory PSU (9V…15V) or • Battery 3.3V…4.
DSB75 Development Support Board Rev.
s DSB75 Development Support Board Rev.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 2.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 2.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 2.5 s Interface Overview Table 2: Interfaces of the DSB75 Interface Reference number Description IGT S421 Ignition push button Emergency reset S420 Emergency reset push button Handset X502 Audio interface 1 (4-pin western jack). Intended for connecting a handset. SIM X503 SIM card holder RF X506 RF signal (SMA connector) Green LED V431 DSB ON.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released Interface Reference number s Description SPI1/2 X510 SPI interface 1 and 2 (10 pole dual strip1) DAI X703 DAI (digital audio interface) Intended for digital audio measurements. SIM X501 SIM test interface (8 pole single strip1) Remote control X120, X121, X203, X405, X410, X411, X420, X421, X500, X710 Jumpers used to connect special PC controlled relay box.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s 3 Description of DSB75 Interfaces 3.1 GSM Module Interface (Board-to-Board Connector) The Molex board-to-board connector X100 on the DSB75 is an 80-pin double-row receptacle. Figure 4 shows the names and positions of the pins on the DSB75. The pin allocation is identical to the GSM module, but pin names may be different.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s Table 3: Pin assignment of B2B connector X100 Pin no. Signal name Signal name Pin no.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.2 Test Points All module pins at the B2B connector X100 are connected 1:1 to pin headers X101, X102. They may be used for connecting measurement equipment, customized host interfaces or as access points to GPIOs, DAC, ADCs, audio lines, etc.
DSB75 Development Support Board Rev.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.3 s GPIO Lines The DSB75 board has 10 GPIO facilities (see Figure 7). Which of them are used depends on the type of GSM module and the software configuration. If the GPIO lines are configured as input, the level may be set to 0 or 1 by S460 - S469. The GPIO lines can be connected to measurement equipment or to an external host application via the test pin X101.
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s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.4 SIM Card Interface The DSB75 has an integrated SIM card interface. An appropriate SIM card (3V or 1.8V) is required to start the GSM module. The SIM card holder X503 placed on the DSB75 is from type Molex. To open the card holder simply press the yellow pin. In parallel to the SIM card holder X503, the test points X501 are connected, e.g. for SIM test equipment.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s X500 1 X501 8 1 2 3 7 4 5 6 8 X503 Figure 10: Pin location of the Molex SIM card holder and test pins Table 8: Pin assignment – SIM card holder X503 and test pins X501 Pin number on holder X503 X501 test points Signal name I/O Function 1 1 VSIM O Supply voltage U = 2.93V (typ.) or 1.8V for SIM card, generated by the module.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.5 RS-232 Interfaces The DSB75 offers three asynchronous RS-232 interfaces: • COM1 (ASC0) • COM2 (ASC1) • COM3 (ASC2) The status of all interface lines is indicated by LEDs (refer to section 4). For using ASCx lines on the test pins X101, X102 without the DSB75 level converter please disable receiver outputs by removing jumpers X204 and X206. Figure 11 shows the simplified interface schematic.
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DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.5.1 s Serial Interface 1 (COM1) The 1st serial interface COM1 (X201) of the DSB75 is intended for the communication between the GSM module and the host application. This RS-232C interface is a data and control interface for transmitting data, AT commands and providing multiplexed channels etc. All modem status lines are available. A level converter D200 adapts and inverts the V.24 signals (2.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.5.2 s Serial Interface 2 (COM2) The 2nd serial interface COM2 (X202) of the DSB75 is intended for the communication between the GSM module and the host application. This RS-232C interface includes only the data lines RXD/TXD for transmitting GPRS data and AT commands, and the two control lines RTS/CTS. A level converter D201 adapts and inverts the V.24 signals (2.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s As the X202 interface has only four lines, you may need a customized adapter cable for the RS-232 connection. This is useful, for example, if your application also requires the lines DSR, DCD, RING.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.6 Analog Audio Interfaces The DSB75 comprises two analog audio interfaces. Both audio interfaces are providing a supply circuit to feed an active microphone. Figure 14 shows the simplified interface schematic. Figure 15 shows the location of switches and the pin assignment of the audio connectors. Electrical characteristics are specified in section 7. Note: All specified data, e.g.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 1 S713 S712 X122 1 S300 S302 S304 S306 S717 S716 X602 S301 S303 S305 S307 X420 X421 1 1 1 1 X501 S240 X500 5 8 1 2 3 2 4 1 3 S421 S601 S730 S731 1 X710 S714 8 S715 1 S710 3 S711 X503 12 X100 X506 X502 V431 V430 1 X700 X701 (bottom side) 4 5 6 7 Figure 15: Location of the audio connectors and switches 3.6.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.6.2 s Audio Interface 2 (Headset or Speakerphone Operation) The unbalanced audio interface 2 is designed for use with headsets or speakerphones. The interface is available on the 12-pin Lumberg connectors X700 and X701. The pin assignment of the Lumberg jacks is shown in Table 13. The power for the microphone (VMIC) is supplied by the GSM module.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.6.2.2 s Speakerphone Operation The recommended speakerphones which are currently available for the audio interface 2 are the “Siemens Car Kit Portable” and “Siemens Car Kit Portable HKP-500” (ordering number is L36880-N5601-A109). The plug of “Siemens Car Kit portable HKP-500” is compatible to Lumberg connector X701. The plug of “Siemens Car Kit Portable” is compatible to Lumberg connector X700.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.6.3 s Microphone Circuit (Feeding Bridges) This section describes the microphone signal path through feeding bridges. The location of the audio connectors can be seen in Figure 14. Figure 17 shows the principal circuit of microphone feeding bridges. The bridge for the audio interface 1 is optimized for feeding the Votronic headset. The balanced microphone is supplied with filtered 5V.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.7 s Digital Audio Interface The Digital Audio Interface (DAI) can be used for acoustic approval or for transferring PCM digital audio data between the GSM module and the customer application. The DAI of the GSM module is designed for use with a codec or a DSP. The DSB75 provides different possibilities for connections between the GSM module and the system environment.
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s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.8 USB Device Interface DSB75 supports a USB 1.1 Full Speed (12 Mbit/s) device interface. It is primarily intended for use as command and data interface and for downloading firmware. The second USB interface with mini AB connector (X111) is reserved for future use and has been not described. Figure 21 shows the simplified interface schematic.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released X201 X205 X110 6 1 9 6 1 5 9 5 1423 X120 1 1 3 S455S456S457 S454S453S452 S450S451 S460S461S462 S465S464S463 S468S467S466 X400 1 1 S112 X121 1 S110 S458S459S469 X401 S111 Figure 22: Location of the USB interface, switches and jumper Table 15: Pin assignment of USB device interface X110 X110 pin Name I/O Description X100 signal name Config.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.9 s I²C Interface The GSM module is the bus master device. The I2CDAT and I2CCLK lines have to be connected on the slave side to a positive supply voltage via a current source or pull-up resistor. The number of interfaces connected to the bus is only dependent on the bus capacity limit of 400pF.
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DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s Table 16: Pin assignment of the I²C interface X511 X511 pin Name I/O Description X100 signal name Config.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.10 SD Card Interface The SD card interface provides a card reader for SD (Secure Digital) memory cards. It has a smooth push-push mechanism with front cover retention for temper-resistant card insertion. There are two contacts for card detection and write protect detection.
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s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.10.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.10.2 SD 1 Bit Mode Table 18: Pin assignment of SD card interface X301 (SD 1 bit mode) X301 pin X301 signal name 1 - I/O I/O Description Remark Not used X100 signal name SD_D3 Configuratio n switches S453:3 S301:1 2 CMD O Command / Response SD_CM D GND 3 VSS1 Supply Ground 4 VDD Supply Supply voltage 2.9V 5 CLK O Clock 25.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.10.3 SPI Bus Mode This interface is an option and an alternative to the ASC1 and SPI2 interfaces. It has to be reconfigured via AT commands as SPI bus mode SD card interface. For further information refer to section 3.11.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.11 Serial Peripheral Interfaces The Serial Peripheral Interface (SPI) system consists of one master device and one or more slave devices. The master is defined as a microcomputer providing the SPI clock, and the slave as any integrated circuit receiving the SPI clock from the master. The GSM module always operates as a master device in master-slave operation mode.
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s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.12 Analog Interface The DSB75 provides an analog interface allowing you to efficiently evaluate the characteristics of the analog baseband codec of the GSM module: • • • • • This analog interface has 2 analog inputs and one analog output. The analog input lines are available on the pin header X101. The analog output is available as a pulse width modulation (PWM) signal on the pin header X101.
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DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.13 s Antenna Interface The RF signal of the GSM module is connected via the supplied RF adapter cable to the Hirose RF jack X505 located on the DSB75. Furthermore, in order to send or receive data, connect an external RF antenna to the SMA jack X506 which is internally connected to the Hirose RF connector X505.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.14 Power Supply Interfaces The constant voltage supply on the PCB provides all the supply voltages required for operating DSB75 and the GSM module. The power supply source can be a 9V…15V laboratory PSU or mains adapter and, in addition, an external battery used to feed only the GSM module.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s X110 1423 X401 X400 1 1 X120 S112 X121 1 S111 N400 C413 V 601 N410 V 602 X410 X405 1 1 1 X411 V 600 N6 00 C414 C415 1 X122 1 X602 S601 5 1 X710 S714 S715 X505 S710 TP105 S711 1 12 TP106 X506 V431 V430 X700 Figure 33: Location of the power supply connectors, switches and jumpers DSB75_hd_v08 Page 57 of 94 29.09.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.14.1 Internal Supply Voltages This section describes the internal supply voltages generated by the power supply unit of DSB75. A simplified block diagram of the power supply concept is shown in section 3.14. Table 23: Description of power supply units Power Supply Unit Description General supply 5V0 (see Figure 34) DSB75 accepts an input voltage between 9V and 15V DC on jacks X400 and X401.
s DSB75 Development Support Board Rev.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.14.2 s Power Supply for DSB75 and GSM Module The voltage provided by the 9V…15V PSU generates all supply voltages required for the DSB75 and the connected GSM module when battery operation is disabled. The output power of the laboratory PSU has to satisfy the SELV requirements in accordance to EN 60950. Table 24: Recommended specification of the laboratory PSU Parameters Value Unit Min. Typical Max.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.14.3 Battery Powered Operation of GSM Module - 1 Battery Battery Connector The external battery connects to the screw terminal block X602 (see Figure 37). 3 5 + X602 Figure 37: Battery screw terminal For battery operation, the toggle switch S601 must be flipped up (position 3). In this case, the GSM module is powered only from the battery.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s Table 27: Pin assignment of the X700 jack for the plug-in charger Pin no. Name I/O Description 1 GND - Ground 2 R - 4.7k resistor to pin 3 (necessary for old charger types) 3 VCharge I Supply voltage provided by the plug-in charger 4 -12 - - Not relevant for charger (keep not connected) Table 28: Pin assignment of the X701 jack for the plug-in charger Pin no.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released The battery voltage is measured at the VSENSE line. The battery temperature is measured at the BATTEMP line (voltage drop at NTC in battery pack). The diode V603 prevents reverse battery discharging in fast charging path if the power failed. Current calculation: The current will be ramped up and down by battery management and reaches the maximum at VISENSE = 150mV. Imax =150mV / 0.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 3.14.5 s Adjusting the VBATT+ Supply Voltage for the GSM Module For test purposes, the VBATT+ voltage supplied to the GSM module can be adjusted using jumpers and variable resistors. The jumpers X410 and X411 serve to set the VBATT+ voltage range, and the variable resistors R414 and R415 are used to adjust the supply voltage within the selected range. Therefore, first set the range (lower limit or normal).
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 4 s Status LEDs TXD0 / USC1 CTS0 RING0 RXD0 / USC2 RTS0 DSR0 DTR0 DCD0 The DSB75 comprises several status LEDs. The position, the corresponding signal and the color of the LEDs can be seen in Figure 40.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 4.1 s Indication of Asynchronous Serial Interface Signals All signals of the asynchronous interfaces ASC0, ASC1 and ASC2 are connected to buffers which drive 16 indicator LEDs. These buffers are enabled via the PWR_IND line which is activated by the module. As a result, the indication only is active if the module is turned on.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 4.3 s Indication of Power There are two power control LEDs on the DSB75. The green power control LED V431 is connected to the DSB75 supply voltage 3V0 which is always available when the DSB75 receives an input voltage. The yellow power control LED V430 is driven from the supply voltage VDD that is only active if a module is connected and turned on. 4.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 5 s Overview of Switches and Jumpers This section provides an overview of all switches and jumpers located on DSB75. The exact location of each switch and jumper is shown in Figure 2 and Figure 43. 5.
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DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 5.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released X203 s X120 X121 X206 X204 X405 X410 X411 X561 X562 X560 X122 X600 X500 X420 X710 X421 Figure 44: Location of jumpers X122 X203 Figure 45: Illustration of positions to cut the trace for jumpers X203 and X122 DSB75_hd_v08 Page 74 of 94 29.09.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 6 s Connecting Antenna and GSM Module to DSB75 To prevent mechanical damage, be careful not to force, bend or twist the module. In order to prevent short-circuits, ensure that the GSM module does not come into contact with any part of the DSB75. Follow these steps to connect the components: • Connect the supplied RF cable to the appropriate RF connector on the GSM module.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s Figure 47: Top view on DSB75 with connected GSM module and RF cable DSB75_hd_v08 Page 76 of 94 29.09.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 6.1 Turn on / off the GSM Module All the hardware driven solutions described in [1] for turning on and off the GSM module are implemented on DSB75 and can be used by as follows: 6.1.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 6.1.2 s Turn off the GSM Module Normal Power-off The best and safest approach to switch off the module is using the AT command AT^SMSO. This procedure lets the GSM module log off from the network and safe data before it shuts down. Emergency-off The emergency-off (9V power shut off or battery power off) option is reserved only for use in the case of emergency.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 7 Technical Data of DSB75 Table 32: DSB75 maximum ratings Parameter Supply voltage Condition Min. Laboratory PSU Max. Unit -30 +30 V Operating temperature +15 +35 °C Storage temperature -40 +85 °C Table 33: DSB75 technical data Parameters Supply current peak Supply current average Condition Min.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released Parameters Charging interface Battery interface Condition Min. Typical 4.75 6.6 10 V Fast charging current (Jumper X600 not set) 450 500 550 mA Fast charging current (Jumper X600 set) 950 1000 1050 mA Trickle charge current (Deep Discharge Lockout) 4 5 7 mA Trickle charge current 25 (Undervoltage Lockout) 30 35 mA Battery voltage 3.8 4.2 V 3.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released Parameters Audio interface 1 (balanced input) Handset Mode (AT^SNFS=1) Audio interface 1 (balanced input) General Information Condition Min. Typical Max. Unit Differential output voltage at full scale sine 1kHz 1.6 Vpp Differential input voltage for 0dBm0 (after settling) 30 mV Maximum differential output voltage, no load 6.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released Parameters Ignition via VBUS line @USB-Interface Condition Min. s Typical Max. Unit VImin = 4V signal ~~~ |________|~~~~~~~~~~~~~~~ | ≥ 1s | ≥ 0.5s | Rise time ≤ 1ms Low high transition of this signal switches the module on. RF attenuation Adapter between RF 0.1 connector X505 (type Hirose U.FL-R-SMT) and RF connector X506 (type SMA) Antenna GSM 8501) Frequency range 0.2 dB 0.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 8 Appendix 8.1 List of Parts and Accessories s Table 34: List of parts and accessories Description Supplier Ordering information Votronic Handset VOTRONIC Votronic HH-SI-30.3/V1.1/0 VOTRONIC Entwicklungs- und Produktionsgesellschaft für elektronische Geräte mbH Saarbrücker Str. 8 66386 St.
DSB75_hd_v08 Page 84 of 94 EPN2_I /sheet7 5 E /sheet7 6 D CC IO /sheet1 4 A /sheet1 2 F /sheet5 6 B CC CLK /sheet1 4 B BAT TEMP /sheet1 2 C /sheet1 2 E /sheet6 2 D BAT T+ /sheet1 4 D /sheet6 5 B /sheet6 4 D ASC_SD /sheet2 1 F /sheet2 12 A /sheet2 12 C ASC_EN2 /sheet2 12 C /sheet2 9 F ASC_EN1 /sheet2 12 B /sheet2 9 E AGND_I /sheet7 8 C /sheet7 6 C DC D0 /sheet1 /sheet1 /sheet2 /sheet2 AGND /sheet1 2 C /sheet1 3 F /sheet7 8 C EMERG_RST /sheet1 2 C /sheet1 3 F /sheet1 7 B GPIO8 /sheet1 /sheet1 /s
DSB75_hd_v08 Page 85 of 94 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet1 /sheet2 /sheet2 /sheet2 /sheet2 /sheet2 /sheet2 /sheet2 /sheet2 /sheet2 /sheet2 /sheet2 /sheet2 /sheet2 /sheet2 /sheet2 /sheet3 /sheet3 /sheet3 /sheet3 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sheet4 /sh
Page 86 of 94 Figure 51: Schematic sheet 1 – B2B connector, test points, USB interface 29.09.
1 ASC_SD 3V0 GND 47K 2 R244 220R R243 220R R242 220R R241 220R R239 220R R240 220R R238 220R V231 2 2 V239 V242 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 LYT679-CO V244 LST679-CO V243 LYT679-CO 2 V241 LST679-CO 2 2 V240 LGT679-CO LST679-CO V238 V236 2 LST679-CO V232 2 LGT679-CO V237 2 LST679-CO V233 2 LYT679-CO V234 2 LYT679-CO V230 2 LGT679-CO V235 2 LST679-CO LGT679-CO R236 220R R232 220R R237 220R R233 220R R234 220R R230 220
C RXD1 TXD1 VDD R303 0R R302 0R GND GND NB_C302 2 220N C304 33P GND 33P DSB75_hd_v08 Page 88 of 94 CTS1 RTS1 SD_DET GND 100P C305 2 S306 2 S304 2 S302 2 S300 3 3 1 3 1 3 1 3 1 SPI2_DO SPI2_SCLK SPI2_DI SPI2_CS 4 2 S307 2 S305 2 S303 2 S301 3 1 3 1 3 1 3 1 CTS1_I RTS1_I RXD1_I TXD1_I 5 6 GND X301 NB_ = not mounted 15 14 11 10 9 8 7 6 5 4 3 2 1 13 12 CCM05-5770 7 06.07.
G F E D C MODULE "ON" Figure 54: Schematic sheet 4 – GPIOs, power supply 29.09.
E D C B I2CDAT I2CCLK NB_C511 33P GND VDD NB_C510 GND 33P GND R512 0R R511 0R V503 1 2 6 1 R562 47K VDD E2 5 C1 E1 2 B2 B1 R561 47K R563 220R GND S501 2 S500 2 3 1 3 1 V502 BC857S/UMT1N V504 4 LGT679-CO 3 C2 2 1 CCDET2 CCDET1 GND CCRST CCCLK CCIO CCVPP CCVCC VDD SIM X503 R502 6 5 1 CCGND 8 7 4 2 3 6 5 1 FDG313N V500 VSS WC E2 E1 E0 VCC AT24C128N-10SI-2.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released A CHARGE LP2985IM5X-5.
Page 92 of 94 1 2 X701 12-POL X700 8 9 10 11 12 14 13 1 2 3 4 5 6 7 3 4K7 L701 Figure 57: Schematic sheet 7 – audio interface 29.09.
s DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released 8.
DSB75 Development Support Board Rev. B1 Hardware Description Strictly confidential / Released s X111 TP104 X301 X701 Figure 59: Floor plan bottom side DSB75_hd_v08 Page 94 of 94 29.09.
