User Manual Guide Project Name: IMA3 Author: Wistron NeWeb Corporation Revision: 1.
User Manual Guide Contact Information Technical Support Website supportiot.wnc.com.tw WNC company Website www.wnc.com.tw Revision History □ Normal Rev. # Author Summary of Changes Date 1.
User Manual Guide © Wistron NeWeb Corporation THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN IS PROPRIETARY AND IS THE EXCLUSIVE PROPERTY OF WNC AND SHALL NOT BE DISTRIBUTED, REPRODUCED, OR DISCLOSED IN WHOLE OR IN PART WITHOUT PRIOR WRITTEN PERMISSION FROM WNC. LIMITATION OF LIABILITY THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN IS PURELY FOR DESIGN REFERENCE AND SUBJECT TO REVISION BY WNC AT ANY TIME.
User Manual Guide Contents Contact Information ........................................................................................................ 2 Revision History .............................................................................................................. 2 Contents ......................................................................................................................... 4 1. 2. Introduction .........................................................................
User Manual Guide 2.6.5. 3. 2.7. ADC interface ...................................................................................................... 36 2.8. GPIO.................................................................................................................... 37 RF Specifications ................................................................................................... 38 3.1. RF connections .................................................................................
User Manual Guide 1. Introduction IMA3 is a CAT-M1 (1 Mbps/1 Mbps DL/UL respectively) LTE modem which incorporates an application CPU subsystem and a host of peripheral interfaces and functions uniquely designed to address the power/performance/cost requirements of IoT and M2M applications. The chip is based on SDR-v3.
User Manual Guide □ Normal M2M Machine to Machine Mbps Megabits per second MIPS Millions of Instructions Per Second N/A Not/Applicable OS Operating System OTA Over The Air PC Personal Computer PCM Pulse Code Modulation PIN Personal Identification Number PSM Power Saving Mode RRC Radio Resource Control SIM Subscriber Identity Module SMA Surface Mount Antenna SPI Serial Peripheral Interface UART Universal Asynchronous Receiver-Transmitter UIM User Identity Module USB Univers
User Manual Guide 1.2. Features 3GPP category support: LTE CAT-M1 with 1 Mbps for DL/UL Embedded 512Mbit LPDDR Embedded 256Mbit SPI NOR Flash Ultra-high performance enhanced SDR processor Embedded network processor with Linux OS Integrated PMU circuitry Integrated RTC support Interference Cancellation (INCA™) capability Optimized for the M2M and IoT markets Interfaces: – HS USB2.
User Manual Guide 2. Electrical Specifications 2.1. Interface pin assignments 2.1.1. LGA Pad Diagram Figure 1.
User Manual Guide 2.1.2. Pin Assignments I/O type description : AO : Analog Output AI : Analog Input DO : Digital Output DI : Digital Input Table 2.
User Manual Guide Data Interfaces- SPI SPIM_MOSI SPI Master Out Slave In DO SPIM_MISO SPI Master In Slave Out DI SPIM_EN SPI master interface enable DO SPIM_CLK SPI master interface clock DO WWAN_STATE Wireless WAN Radio State DO POWER_ON Power On the module DI WAKEUP_OUT Module wakes up host OR GPIO DO WAKEUP_IN Host wakes up module OR GPIO.
User Manual Guide Table 3. Pin Assignments □ Normal Pin No. Signal Name Description 1 GND 2 Voltage Levels (V) Min. Typ. Max.
User Manual Guide □ Normal 31 GND Ground - 0 - 32 GND Ground - 0 - 33 NC NC - - - 34 GND Ground - 0 - 35 GND Ground - 0 - 36 GND Ground - 0 - 37 VCC1 Power 3.3 3.8 4.2 38 VCC2 Power 3.3 3.8 4.2 39 VCC3 Power 3.3 3.8 4.2 40 VCC4 Power 3.3 3.8 4.2 41 VCC5 Power 3.3 3.8 4.2 42 VCC6 Power 3.3 3.8 4.2 43 NC NC - - - 44 GND Ground - 0 - 45 GND Ground - 0 - 46 PCM_SYNC/GPIO46 PCM_SYNC or GPIO 1.7 1.8 1.
User Manual Guide □ Normal 74 GND Ground - 0 - 75 GND Ground - 0 - 76 NC NC - - - 77 NC NC - - - 78 NC NC - - - 79 NC NC - - - 80 UART1_CTS (UART1) Clear To Send for UART 1 1.7 1.8 1.9 81 UART1_RTS (UART1) Request To Send for UART 1 1.7 1.8 1.9 82 UART1_RX (UART1) Receive for UART 1 1.7 1.8 1.9 83 UART1_TX (UART1) Transmit for UART 1 1.7 1.8 1.
User Manual Guide 107 UART2_TX (UART2) Transmit for UART2 1.7 1.8 1.9 108 GND Ground - 0 - 109 GND Ground - 0 - 120 NC NC - - - 121 NC NC - - - 122 ADC Analog to Digital Converter 1.7 1.8 1.9 123 NC NC - - - 124 NC NC - - - 125 SPIM_MOSI 1.7 1.8 1.9 1.7 1.8 1.9 1.7 1.8 1.9 128 SPIM_CLK SPI Master Out Slave In data line SPI Master In Slave Out data line SPI master interface enable signal SPI master interface clock 1.7 1.8 1.9 129 GPIO05 GPIO 1.7 1.
User Manual Guide Module OFF. □ Normal 143 WAKEUP_OUT Module wakes up host. 1.7 1.8 1.9 144 WAKEUP_IN Host wakes up module. 1.7 1.8 1.9 145 RESET Main reset line. Active low 1.7 1.8 1.9 146 VREF Reference Logic Voltage 1.7 1.8 1.9 200 NC NC - - - 201 JTAG_TCK JTAG/EJTAG clock 1.7 1.8 1.9 202 JTAG_TDI JTAG/EJTAG input data 1.7 1.8 1.9 203 JTAG_TDO JTAG/EJTAG output data 1.7 1.8 1.9 204 JTAG_TMS JTAG/EJTAG test mode select 1.7 1.8 1.9 205 JTAG_TRST_N 1.7 1.
User Manual Guide Below is the I/O default setting table to describe the level. It was recommended to follow the pulling High or Low to choose a suitable GPIO for application. PU : Pull Up. PD : Pull Down NP : Non-Pull I/O default setting table Pin No.
User Manual Guide □ Normal 97 GPIO97 DI/DO PU 106 UART2_RX (UART2) DI PU 107 UART2_TX (UART2) DO PU 122 ADC AI PU 125 SPIM_MOSI DO PU 126 SPIM_MISO DI PU 127 SPIM_EN DO PD 128 SPIM_CLK DO PD 129 GPIO05 DI/DO PD 130 GPIO06 DI/DO PD 131 GPIO07 DI/DO PD 132 GPIO08 DI/DO PD 134 UIM_DATA DI/DO PU 135 UIM_CLK DO PU 136 UIM_RESET DO PU 137 UIM_DETECT DI/DO PU 141 WWAN_STATE DO PD 142 POWER_ON DI PD 143 WAKEUP_OUT DO PD 144 WAKEUP_IN DI
User Manual Guide Parameter Description Table 4. Digital I/O specifications Min. Typ. Max. Units VIH Logic High Input Voltage 0.85*VREF - VREF + 0.3 V Logic Low Input Voltage -0.3 - 0.25*VREF V - - ± 10 μA Logic High Output Voltage VREF – 0.45 - VREF V Logic Low Output Voltage 0 - 0.
User Manual Guide 2.2. Power supply IMA3 includes an integrated Power Manager enabling single and direct voltage supply from the battery and reducing the overall bill of materials. Power VCC Signal Name Table 5. Power supply specifications Pin No. Description VCC1 to VCC6 37–42 Main Power Supply Voltage Levels (V) Min. Typ. Max. 3.3 3.8 4.
User Manual Guide Output High Output Low USB data positive (high-speed) Input High Input Low Output High Output Low 2.8 – 3.3 – 3.6 0.3 0.3 0 0.36 0 – – 0.38 – 0.44 0.01 0.44 0.01 2 0 2.8 – 3.3 – 3.3 – 3.6 0.8 3.6 0.3 0.3 0 0.36 0 – – 0.38 – 0.44 0.01 0.44 0.
User Manual Guide 2.4. SIM interface IMA3 includes an SC controller, interface pins, and a dedicated LDO (3.0 V or 1.8 V). Since IMA3 is not equipped with a SIM socket, it must place a SIM socket on the user interface board. IMA3 provides a UIM_DETECT input pin to detect if the SIM card is present. If the USIM card is present, UIM_DETECT should be high. (The voltage level should be 1.8 V) If the USIM card is absent, UIM_DETECT should be low. (The module is internally pulled down.
User Manual Guide 2.5. Control interface (signals) This section describes the host-to-modem wake-up interface and power-on signal to enable or disable the control module. 2.5.1. Power-on Signal The POWER_ON pad is an input signal used to control whether the module is in the Module Enabled or Module Disabled state. Do not toggle the PERST# pin during power-on. This signal has the highest priority over the wakeup, the alarms signals, and the digital control pins.
User Manual Guide Power OFF VCC Power ON Module Enable Module Disable Power OFF VCC Power 36μs ≤ T ≤ 100 μs Vref (1.8V) Ton≧0ms Ton POWER_ON Tdelay≧500ms RESET Tdelay UART1_RTS Starts transmitting message or commands Tboot≧10s UART2_TX Starts receiving message or commands Tboot≧10s UART2_RX Figure 3. Power ON/OFF timming In order to prevent the POWER_ON signal in a floating state, default had a internal pull low 200 kΩ resistor to power on the module.
User Manual Guide 2.5.2. Host-to-modem wake-up interface In applications where the device power consumption is a major target of optimization such as battery-operated sensors that are based on IOT/M2M modem solution and in addition, include a third-party host, it is necessary to define a simple interface that will allow both the modem and the host to be able to enter low power states whenever possible while allowing the other side to wake it up when required.
User Manual Guide If the Power states of “Sleep” and “Hibernation” feature are required, it was recommended to connect WAKEUP_IN and WAKEUP_OUT signal to Host. This design can make sure IMA3 can be waked up by Host. “WAKEUP_IN” (Host: Output, Modem: Input): LOW: Host does not need the MODEM (allowing it to sleep). HIGH: Host needs the MODEM or acknowledges it is ready following a wakeup request from the MODEM.
User Manual Guide A Transmit Data B C D E Low Power state F Host sends Data HOST_UART_TX (UART1_RX) MODEM_UART_TX (UART1_TX) WAKEUP_IN WAKEUP_OUT Figure 4. Open UART interface – Host to Modem A. Host detects that it has nothing to send and Modem isn’t transmitting any data (HOST_UART_TX = 0). Host requests Modem to enter low power state and send “AT%IFSUSP” to Modem. B. Modem receives “AT%IFSUSP” and decides whether to send “OK or “Not Ready” response.
User Manual Guide A Transmit Data B C D G Low Power state H Modem sends Data HOST_UART_TX (UART1_RX) MODEM_UART_TX (UART1_TX) WAKEUP_IN WAKEUP_OUT Figure 5. Open UART interface – Modem to Host There is another scenario to open UART interface by Modem. The step A to D is same as opening UART interface by Host. But step G and H is different. G. Modem wants to send data to Host. WAKEUP_IN is up H. Host is awaking and brings WAKEUP_IN up when Host is ready. Then Host can start to send data to Modem.
User Manual Guide 2.5.3. Reset Signal The Reset Signal is a hardware reset signal to control the system reset directly. You can connect it to a key or a control signal. It was recommended to reserve a pull up resistor and a capacitor to ground. Default is not installed. It is required that the Reset Signal is kept LOW at least 3 seconds after a command to reset the module has been issued to ensure that there is time for the module reset properly. Figure 6.
User Manual Guide 2.6. Digital interface This section provides the required AC timing information relating to Module Digital Interfaces. 2.6.1.
User Manual Guide Figure 7. SPI_CLK_POS timing diagram Figure 8. SPI_CLK_NEG timing diagram Table 7. Standard SPI mode timing (both SPI_CLK_OS and SPI_CLK_NEG) Parameter Minimum Maximum Unit Description □ Normal TCYCLE 20 - ns Clock cycle time TSU 5 - ns Input setup time THO 0 - ns Input hold time TPD 1.5 8.
User Manual Guide Table 8. LCD mode timing (both SPI_CLK_OS and SPI_CLK_NEG) Parameter Minimum Maximum Unit Description TCYCLE 20 - ns Clock cycle time TSU 5 - ns Input setup time THO 0 - ns Input hold time MOSI TPO 1.5 8.5 ns Output delay MISO TPD 1.5 16 ns Output delay 2.6.2. PCM Interface IMA3 provides one PCM digital audio interface The PCM interface enables communication with an external codec to support a linear format. Figure 9.
User Manual Guide 2.6.3. I2S Interface PCM and I2S share the same pins on IMA3, the PCM signal pins can be configured as an I2S interface. Pad Config1 Config2 46 PCM_SYNC I2S_LRCK 47 PCM_DIN I2S_DATA_IN 48 PCM_DOUT I2S_DATA_OUT 49 PCM_CLK I2S_BCK Figure 10.
User Manual Guide 2.6.4. I2C Interface There is one I2C interface in IMA3. It was recommended to add pull high to 1.8 V through resistors with values of 2.2 kΩ to 4.7 kΩ. ICs and sensors can use the same I2C interface. IMA3 can recognize them by different addresses. I2C interface only supports master mode. Figure 11.
User Manual Guide 2.6.5. UART Interface There are dual UART interfaces. One is 4 bit for high-speed data transfer, and the other is 2 bit for diagnostic tools and debugging. Recommended to reserve a pull down 1kΩ resistor on UART1_RTS signal near IMA3 module side for booting up normally. Figure 12. Note : Recommended circuit for UART interface (4 bit) with Level translator UART1_RTS signal should be LOW at least 500ms while booting up the system, since there is a internal booting configuration limited.
User Manual Guide 2.7. ADC interface One Analog to Digital Converter (ADC) input is provided by IMA3. The converter is of a 10 bit resolution, ranging from 0.1 V to 1.8 V with a sampling rate of 2 MHz. They can be used for customer applications. Signal Name Pads ADC 122 Table 9. ADC interface Type Description Analog Analog to digital conversion input Table 10. Electrical characteristics of the ADC interface Parameter Minimum Typical Maximum Unit 0.1 - 1.
User Manual Guide 2.8. GPIO IMA3 includes general purpose I/O signals that are summarized in the following table. These GPIOs are available for customer-defined purposes such as control, signaling, and monitoring. Some GPIO signals also can be configured as PCM signals for audio applications. □ Normal Signal Name Pads Table 11.
User Manual Guide 3. RF Specifications 3.1. RF connections IMA3 provides two RF pads; developers can connect them via 50 Ω traces to the main board. TRX pads – RX/TX path It is recommended to have keep-out under RF pads. 3.2. Interference and sensitivity This section is to help developers to identify the interference that may affect IMA3 when adopting it in systems.
User Manual Guide 3.3. Radiated sensitivity measurement Over-the-air testing can demonstrate the TRX ability of the whole system. Keys elements that affect the measurement are: Module ability (refer Specification) Antenna Gain System noise source The OTA performance should be performed in an OTA chamber. 3.4. Supported frequencies Band Table 12.
User Manual Guide 3.5. Power consumption IMA3 was designed for the IoT and M2M markets. WNC has devoted special attention from the beginning of development to low power design and has undergone major efforts to further reduce the system power consumption in order to achieve unprecedented figures for an LTE device. The system can exist at any given time in one of the defined power states.
User Manual Guide please reboot IMA3 PSM Off Power Saving Mode is newly added feature in 3GPP Release 12 and is specified in 3GPP 24.301-5.3.11 Power saving mode and 23.682-4.5.4 UE Power Saving Mode. PSM is applied between the expiration of T3324 and T3412. The modem has no power supply; None None there is no system clock. The following figure depicts the possible transitions between the system power states.
User Manual Guide Figure 14 can describe the PSM mechanism between User Equipment (UE) and Network (NW). The time of T3412 could be configured by users. Please refer to the document “WNC IMA3 Application Notes for Power Saving Mode v0.9.4.pdf” for the commands of PSM.
User Manual Guide 3.6. Module power states In the operational modes, the system can be configured to use the different power states. The system state is selected according to the permissions, required activity, and the available expected time until the next power state. This method allows the power management to be very dynamic and flexible and to be tuned according to the needs of each product/application and according to specific conditions.
User Manual Guide Band4 Working mode Band4 – Bandwidth 10MHz, TX TBD Power=23dbm Cat. M1, Downlink 1Mbps/ Uplink 1Mbps via USB interface by iperf tool Band12 Working mode Band12 – Bandwidth 10MHz, TX TBD Power=23dbm Cat. M1, Downlink 1Mbps/ Uplink 1Mbps via USB interface by iperf tool Conditions Powering on Result (VCC=3.8V) Peak power consumption Power consumption peak when the module TBD is powering up Conditions Result (VCC=3.
User Manual Guide 4. Software Interface IMA3 can be configured with several types of configurations for different external host processors which require data communication to the Internet. The basic concept is that the module provides proper interfaces for its control and for the data traffic, which supports as many external host processors as possible with different capabilities for network connection. Please refer to the “IMA3 SW Developer Guide” for further detail.
User Manual Guide 5. Mechanical and Environmental Specifications 5.1. PCBA form factor Dimensions and recommended PCB Layout footprint for IMA3. Figure 15.
User Manual Guide □ Normal □ Internal Use Figure 16.
User Manual Guide 5.2. Module PCB Layout This section depicts the inner layer of IMA3 PCB layout to enhance users’ understanding of the module’s design. Top layer: Figure 17.
User Manual Guide Bottom layer: Figure 18.
User Manual Guide 5.3. Reflow This section details the recommended reflow profile when the module is mounted onto other boards. Temp. Region 1 2 3 4 5 Upper temp. region 120 170 170 170 170 190 225 225 245 250 245 Lower temp. region 120 170 170 170 170 190 225 225 245 250 245 Conveyer band speed 6 7 8 9 10 11 90 cm/minute Figure 19. Reflow Profile of IMA3 Table 16. Reflow data PWI = 60% D31-1 D31-2 U23-3 U23-4 Temp. Difference Preheat from 140–190°C 4.34 39% Melt-out Time/230°C 4.
User Manual Guide Max Temp 45.73 57% Total Time/217°C 3.45 -6% Gradient1 (100–150°C) 2.27 52% 246.01 60% 245.56 56% 245.38 54% 0.63 84.37 -3% 80.45 -18% 80.82 -17% 3.92 2.31 54% 2.22 48% 2.22 48% 0.09 Table 17. Process limit Solder Paste Lead-free Profile feature □ Normal Min. Max. Unit Gradient1 (Target = 1.
User Manual Guide 5.4. Labeling Figure 20.
User Manual Guide 5.5. Thermal considerations Ambient operating temperature: –25 °C to +75 °C (–20 °C to +60 °C fully compliant with 3GPP; –25 °C to +75 °C functional work) Ambient storage temperature: –40 °C to +85 °C The case temperature of module shielding cover must be < 85 °C when integrated to prevent damage. Design points used to improve the thermal performance: It’s better to add a naked copper area onto IMA3 module back side of the PCB.
User Manual Guide 6. Regulatory and Industry Approvals 6.1. Certification testing PTCRB, FCC and AT&T TA 6.2. Safety and hazards Be sure the use of this product is allowed in the country and in the environment required.
User Manual Guide 7. Packaging The IMA3 modules are delivered in tape and reel. Figure 21.
User Manual Guide □ Normal □ Internal Use Confidential Figure 22. Packing—reel Figure 23.
User Manual Guide 8. Safety Recommendation Be sure the use of this product is allowed in the country and in the environment required.
User Manual Guide 9. Appendix In order to describe more detailed about the I/O default setting while entering Sleep or Hibernation is as below table. Table 18. I/O default setting table □ Normal Pin No.
User Manual Guide □ Normal 106 UART2_RX (UART2) DI PU PU 107 UART2_TX (UART2) DO PU PU 122 ADC AI PU PU 125 SPIM_MOSI DO PU PU 126 SPIM_MISO DI PU PU 127 SPIM_EN DO PD PU 128 SPIM_CLK DO PD PD 129 GPIO05 DI/DO PD PD 130 GPIO06 DI/DO PD PD 131 GPIO07 DI/DO PD PD 132 GPIO08 DI/DO PD PD 134 UIM_DATA DI/DO PU PU 135 UIM_CLK DO PU NP 136 UIM_RESET DO PU NP 137 UIM_DETECT DI/DO PU NP 141 WWAN_STATE DO PD PD 142 POWER_ON DI PD PD
