Acsip EK-AI7931LD Highly Integrated Iot Module User Guide

Acsip EK-AI7931LD Highly Integrated Iot Module

Product Information

The AcSip ip EK-AI7931LD is a hardware development kit designed and manufactured by AcSip Technology Corp. It is a compact and easy-to-use kit that enables developers to quickly prototype and develop IoT applications. The kit features a microcontroller, power supply, audio, buttons, RGB LED, SD card, and extension connectors. It also includes an EVK schematic for reference.

Hardware Features

The hardware features of the AcSip ip EK-AI7931LD include:

• Microcontroller
• Power supply
• Audio
• Buttons
• RGB LED
• SD card
• Extension connectors

Federal Communication Commission Interference Statement

The AcSip  EK-AI7931LD complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. this device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

•  Reorient or relocate the receiving antenna.
•  Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation.

IMPORTANT NOTE:
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Country Code selection feature to be disabled for products marketed to the US/CANA

Integration instructions for host product manufacturers
Applicable FCC rules to module
FCC Part 15.247
FCC Part 15.407

Summarize the specific operational use conditions
The module is must be installed in mobile device.
This device is intended only for OEM integrators under the following conditions:

1. The antenna must be installed such that 20 cm is maintained between the antenna and users, and
2.  The transmitter module may not be co-located with any other transmitter or antenna

As long as 2 conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed.
IMPORTANT NOTE: In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user’s manual of the end product which integrates this module.
The end user manual shall include all required regulatory information/warning as show in this manual.

Limited module procedures
Not applicable

Trace antenna designs
Not applicable

RF exposure considerations
20 cm separation distance and co-located issue shall be met as mentioned in “Summarize the specific operational use conditions”. Product manufacturer shall provide below text in end-product manual
“This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.”

Antennas

Label and Compliance Information
Product manufacturers need to provide a physical or e-label stating
“Contains FCC ID: 2ADWC-AI7931LD” with finished product

Information on Test Modes and Additional Testing Requirements
Test tool: termite-3.3 shall be used to set the module to transmit continuously.

Additional Testing, Part 15 Subpart B Disclaimer
The module is only FCC authorized for the specific rule parts listed on the grant, and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.

Product Usage Instructions

Getting Started

To get started with the AcSip ip EK-AI7931LD:

1. Configure the EK-AI7931LD by following the instructions insection 2.1 of the user guide.
2. Install the FTDI drivers on Microsoft Windows by following the instructions in section 2.2 of the user guide.
3. Refer to the EVK schematic in section 6 of the user guide for reference.

Configuring the EK-AI7931LD

To configure the EK-AI7931LD:

1. Connect the kit to a computer using a USB cable.
2. Open the device manager and locate the “USB Serial Port” under “Ports (COM & LPT)”.
3. Right-click on the “USB Serial Port” and select “Properties”.
4. Click on the “Port Settings” tab and select “9600” for the “Bits per second”.
5. Click on the “Advanced” button and select “COM1” for the “COM Port Number”.
6. Click “OK” to save the settings.

The top view of the EK-AI7931LD is shown Jumpers and connectors on the EK- AI7931LD
The description of pins (Figure 2) and their functionality is provided below:

1.  CON8 transfer USB interface to UART interface, can debug through UART, transmit, and receive a signal form PC.
2. CON8 is a USB 5V power for EK-AI7931LD, or you can use external 5V power at J1.
3. Press SW1 to reset the system For SW2~SW5 more detail, please see “section 4.4”.
4.  For Wi-Fi and BT function AI7931LD module reserve a Wi-Fi + BT IPEX connector. Please connect external antenna to transmit and receive RF signals.
5.  U8 and U9 are on-board AMICs which can catch voice command.
6. U54/U56 are RGB LEDs and these RGB LED will be controlled by SPIM interface.
7. J28 and J87 support multifunction GPIO interface, for more detail please refer to “section 4.7”.
8.  J10 and J11 are audio speaker pin header which can connect 8ohm/2W speaker to achieve voice assistant function.

Installing the FTDI drivers on Microsoft Windows

To install the FTDI drivers on Microsoft Windows:

1. Download the drivers from the FTDI website.
2. Extract the files from the downloaded zip file.
3. Connect the kit to a computer using a USB cable.
4. Open the device manager and locate the “USB Serial Port” under “Ports (COM & LPT)”.
5. Right-click on the “USB Serial Port” and select “Update driver”.
6. Select “Browse my computer for driver software”.
7. Navigate to the extracted driver files and select the appropriate driver for your version of Windows.
8. Click “Next” to install the driver.

To configure the EK-AI7931LD:

1.  Connect the EK-AI7931LD CON8 to the computer using a micro-USB cable.
2.  Check your PC is x86 or x64 system. And download and install FTDI Windows serial port driver from Here. (The red block showed the download file at below figure)
3.  If your OS is Windows7 or 10, please open Windows Control Panel then click System and enter Device Manager.
4. In Device Manager, navigate to Ports (COM & LPT) . COM port associated with the EK-AI7931LD
5.  A new COM device should appear under Ports (COM & LPT) in Device Manager, as shown in Figure 3. Note the COMx port number of the serial communication port, this information is needed to send command and receive logs from the COM port.

Hardware Feature Configuration

The hardware features of the AcSip  EK-AI7931LD can be configured by following the instructions in section 4 of the user guide. This includes configuring the microcontroller, power supply, audio, buttons, RGB LED, SD card, and extension connectors.

 Introduction

General Description

AI7931LD is a highly integrated IoT module that features an ARM® Cortex-M33 application processor, a low power 1×1 802.11a/b/g/n/ac/ax dual-band Wi-Fi subsystem, a Bluetooth v5.0 subsystem and a Power Management Unit (PMU). The Wi-Fi subsystem and a Bluetooth v5.0 subsystem offer feature-rich wireless connectivity at high standards, and deliver reliable, cost-effective throughput from an extended distance. The AI7931LD is designed to support standard based features in the areas of security, quality of service and international regulations, giving end users the greatest performance any time and in any circumstance. The AI7931LD is based on ARM® Cortex-M33 with floating point microcontroller (MCU) including SRAM/ROM memory. The module also supports rich peripheral interfaces, including SDIO, SPI master, I2C, I2S_IN, IR input, UART, AUXADC, PWM, and GPIOs. These features are used to download and debug a project on EK-AI7931LD. The front view of the EK-AI7931LD including AI7931LD module is shown . Front view of EK-AI7931LD

Get started with the HDK

Before commencing the application development, you need to configure the development platform.

PRODUCT USER GUIDE

www.acsip.com.tw
Due to the com port numbers (COMx) are different at different PC. As red block in Figure 3. showed, means “CM33 UART”.

 Hardware Features

This section provides the main supported features of the EK-AI7931LD The detailed description of the features is provided in the upcoming sections

 Features Description

Technology and Package

• AI7931LD LGA-104 module, 32mm X 32mm X 2.7mm (Typ.)

Power Management and Clock Source

•  Integrates high efficiency power management unit with single 3.3V power supply input.
•  Integrates 26MHz crystal clock with low power operation in idle mode.
• Integrates 32KHz crystal oscillator for low power sleep mode.

Platform

•  ARM® Cortex-M33 MCU with FPU with up to 300MHz clock speed
•  Embedded 1MB SRAM and 4MB PSRAM
•  Embedded 16MB serial flash with eXecute In Place (XIP) and on-the-fly AES
•  Supports Hardware crypto engines including AES, DES/3DES, SHA, ECC, TRNG for network security
• Supports up to 22 General Purpose IOs, which are multiplexed with SDIO, SPI Master, UART, I2C, I2S_IN, AUXADC, PWM and GPIO interfaces
•  Supports 12 DMA channels.

Wi-Fi

•  IEEE 802.11 1T1R a/b/g/n/ac/ax 5GHz and 2.4GHz bands
• Supports 1×1 20MHz bandwidth, MCS0~8(256-QAM) in 2.4G/5GHz band
•  Support uplink MU-OFDMA TX and downlink MU-OFDMA RX
• Support TX LDPC (Low-density parity check)
•  Support RX STBC
•  Wi-Fi security WFA WPA/WPA2/WPA3 personal
•  QOS supports of WFA WMM
•  Support CSI (Channel Signal Information)

Bluetooth

• BT5.0 2M_PHY / Long Range / Advertising Extension / SAM / CS#2 / High Duty Cycle Non-Connectable ADV
• BT4.2 Link Layer Privacy / LE Secure Connection / LE Data Packet Length Extension / Link Layer Extended Scanner Filter Policies
•  BT4.1 Link Layer Topology / Secure Connection
•  BT4.0 BLE only mode
• Up to 8 BLE links
•  Packet loss concealment
•  Channel quality driven data rate adaptation
• Channel assessment and WB RSSI for AFH
•  Supports Bluetooth/Wi-Fi coexistence

Miscellaneous

•  Embedded eFuse to store specific device information and RF calibration data.
•  Advanced TDD mode Wi-Fi/Bluetooth coexistence scheme.

 Hardware Feature Configuration of the product

Microcontroller
The AI7931LD features an ARM® Cortex-M33 processor, which is the most energy efficient ARM® processor currently available. It supports the clock rates up to 200MHz when core power is 0.7V and 300MHz when core power is 0.8V. The MCU executes the Thump-2 instruction set for optimal performance and code size, including hardware division, single cycle multiplication and bit-field manipulation. The AI7931LD includes a Memory Protection Unit (MPU) in Cortex-M33 MCU to detect unexpected memory access and provides other memory protection features. The AI7931LD also includes FPU in Cortex-M33 MCU.

Power Supply
EK-AI7931LD supports two types of power supply.

1. Power up with a micro-USB connector.
   An on-board switching regulator provides voltage of 3.3V for the EK-AI7931LD, if the power is supplied from an on-board micro-USB connector CON8 (Figure 2). This supply can be isolated from the switching regulator using the jumpers.
   Note: that the jumpers J2, J3, J4, J5, J27 pin1 and pin2. JP1, JP2, JP5 pin1 and pin2 are required to be set on. More details on the jumpers can be found in Table 1. Default power jumper plot
   Jumper settings for system power input through USB connection Jumper| Usage| Comments
   ---|---|---
   J1| External 5V power supply| Use external power source to supply 5V voltage to EK-AI7931LD PCB. Pin 1 is 5V source. Pin2 is GND.
   J2| DC-5V transfer to DC-3V3 current source|
   J3| Current measurement (3V3)| Measures the current flow in AI7931LD module.
   J4| 3V3 for EEPROM power| EEPROM has no parts.
   J5| 3V3 for external components|
   J25| AVDD33_VRTC battery power supply| Use AA or AAA battery for RTC 3V3 power. Pin1 is positive endpoint, Pin2 is GND.
   J26| Current measurement in RTC mode| RTC mode For AI7933CLD only.
   J27| 3V3 for SD_CARD power|
   JP1| Switch VCCIO_L to 3V3 power domain or 1V8 power domain| Select pin 1 & 2, means VCCIO_L use 3V3 power domain    Select pin 2 & 3, means VCCIO_L use 1V8 power domain
   JP2| Switch VCCIO to 3V3 power domain or1V8 power domain| Select pin 1 & 2, means VCCIO use 3V3 power domain Select pin 2 & 3, means VCCIO use 1V8 power domain
   Caution: The flash of AI7931LD default using3V3 power domain, if you want to change VCCIO to 1V8 power domain please rework flash to 1V8 power domain flash (eq. W25Q128JWPIQ)
   JP3| Switch 1V8 VCCIO from internal PHYLDO or external LDO| Select pin 2 & 3, means 1V8 VCCIO from internal PHYLDO Select pin 1 & 2, means 1V8 VCCIO from external Buck component
   JP5| Switch RTC 3V3 from DC-3V3 or AVDD33_VRTC| Select pin 1 & 2, means RTC_3V3 use DC-3V3 Select pin 2 & 3, means RTC_3V3 use AVDD33_VRTC
   JP7| Switch SD Card to 3V3 power domain or 1V8 power domain| Select pin 1 & 2, means SD_CARD power use 1V8 power domain Select pin 2 & 3, means SD_CARD power use 3V3 power domain
   JP9| Switch EEPROM(NC) to 3V3 power domain or 1V8 power domain| Select pin 1 & 2, means EEPROM power use 3V3 power domain Select pin 2 & 3, means EEPROM power use 1V8 power domain
   J88| 5V for (U10) Audio AMP power| Pin 1 is EXUSB_5V
   J89| 5V for (U10) Audio AM using| Pin 1 is EXUSB_5V
2. Power up using an AA or AAA battery.

Connect an external AA or AAA battery to battery pin header (J25) to supply power to the system, as shown. Power up the HDK using an AA or AAA Battery (J25)
Please note that remove jumper J2 and plug in jumper J26. Jumper JP5 can be removed.

Audio
The EK-AI7931LD has on-board audio connector associated with different functionalities of the board. The detail of audio related function can refer to Table 2.Audio related function

Module_audio_out_L, Audio jack_L_in) Select pin 2 & 1, The audio is output by audio jack. Select pin 3 & 2, The audio is output by speaker (J10)
J24| Audio-Right_P switch, Pin(3,2,1) Pin define (Audio jack_R_in , Module_audio_out_R ,Amp_R_in_P) Select pin 3 & 2, The audio is output by audio jack. Select pin 2 & 1, The audio is output by speaker (J11)
J85| Audio-Left_N , Pin(1,2) Pin define (Audio_L_N,GND)
J86| Audio-Right_N, Pin(1,2)  Pin define (GND, Audio_R_N)
J10| Audio header for left speaker
J11| Audio header for right speaker
U8| AMIC for left channel (the microphone hole is set at back side of EK- AI7931LD)
U9| AMIC for right channel (the microphone hole is set at back side of EK- AI7931LD)
SW2| Audio volume up button
SW3| Audio volume down button

Buttons
The EK-AI7931LD is equipped with buttons with the following functionality. The push buttons are shown in Figure 2 The detail of buttons can refer to Table 3.
Buttons

RGB LED
showed, the EK-AI7931LD has on-board RGB LEDs (U54/U56) which be controlled by SPIM interface. Please note that ensure jumper J79 and J80 are connected before using RGB LED function If you want to cascade more RGB LED, you can connect to J78

SD Card
The EK-AI7931LD reserve a SD card slot to provide user to save data into a SD card. And note that there are some registers which placed need to be reworked before using SD card. Please refer SD card slot rework
and switch R756 to R757; switch R745 to R751; switch R744 to R750; switch R746 to R747; switch R748 to R749; switch R754 to R755; switch R752 to R753.

Extension connectors
The EK-AI7931LD provides similar pin-out extension connectors for various sensor and device connectivity, as shown Note: GPIO-12 & GPIO-C_12 are the same circuit.
GPIO-13 & GPIO-C_13 are the same circuit.
GPIO-15 & GPIO-C_15 are the same circuit.
GPIO pin-out extension connectors and described in Table 4.
The board has 22 GPIOs multiplexed with other interfaces. Depending on the use case, user can configure each I/O functionality.
GPIO pin-out extension connector

**Signal Name**

| **Connector Pin Number| Signal Name| ****Connector Pin Number**
---|---|---|---
GPIO_0| Reserve for flash| GPIO_14| J87 – 9
GPIO_1| Reserve for flash| GPIO_15| J87 – 11
GPIO_2| Reserve for flash| GPIO_17| J87 – 13
GPIO_3| Reserve for flash| GPIO_18| J87 – 15
GPIO_4| Reserve for flash| GPIO_19| J87 – 17 Reserve for Arduino:I2C1_SDA
GPIO_5| Reserve for flash| GPIO_20| J87 – 19 Reserve for Arduino:I2C1_SCL
GPIO_6| J28 – 2 Reserve for Arduino:SPI0_CSK| GPIO_21| J87 – 21
GPIO_7| J28 – 4 Reserve for Arduino:SPI0_CSN| GPIO_22| J87 – 23
GPIO_8| J28 – 6 Reserve for Arduino:SPI0_MISO| GPIO_23| J87 – 25
GPIO_9| J28 – 8 Reserve for Arduino:SPI0_MOSI| GPIO_24| J87 – 12
GPIO_10| J28 – 10| GPIO_42| J28 – 30 Reserve for Arduino:UART1_RX
GPIO_11| J28 – 12| GPIO_44| J28 – 28 Reserve for Arduino:UART1_TX
GPIO_12| J87 – 5| GPIO_48| J87 – 6 Reserve for CM33 UART
GPIO_13| J87 – 7| GPIO_50| J87 – 8 Reserve for CM33 UART

GPIO pin multi-function definition

IO Name| CR Value
Default| Name| Dir| Default| Description
---|---|---|---|---|---
Dir| PU/PD
PAD_SYSRST_B| NA| PAD_SYSRST_B| | | PU| Chip hardware fundamental reset pin
SDIO_CLK| 0000| GPIO[6]| I/O| I| PD| GPIO 6
0001| SDIO_CLK| I| SDIO Clock
0010| MSDC0_CLK| O| MSDC Clock
0011| SPIM0_SCK| O| SPI0 (Master) Clock
0100| CM33_GPIO_EINT0| I| CM33 EINT0
0101| DEBUG_0| O| Debug Signal 0
0110| ANT_SEL0| O| Antenna Select 0
0111| RSVD| I| RSVD
SDIO_CMD| 0000| GPIO[7]| I/O| I| PU| GPIO 7
0001| SDIO_CMD| I/O| SDIO CMD
0010| MSDC0_CMD| I/O| MSDC CMD
0011| SPIM0_CS_N| O| SPI0 (Master) Chip Select
0100| CM33_GPIO_EINT1| I| CM33 EINT1
0101| DEBUG_1| O| Debug Signal 1
0110| ANT_SEL1| O| Antenna Select 1
0111| RSVD| I| RSVD
SDIO_DAT0| 0000| GPIO[8]| I/O| I| PU| GPIO 8
0001| SDIO_DAT0| O| SDIO Data[0]
0010| MSDC0_DAT0| I/O| MSDC0 Data[0]
0011| SPIM0_MISO| I| SPI0 (Master) Input
0100| UART0_RTS| O| UART0 RTS
0101| DEBUG_2| O| Debug Signal 2
0110| ANT_SEL2| O| Antenna Select 2
0111| CM33_GPIO_EINT0| I| CM33 EINT0
SDIO_DAT1| 0000| GPIO[9]| I/O| I| PU| GPIO9
---|---|---|---|---|---|---
0001*| SDIO_DAT1| I/O| SDIO Data[1]
0010| MSDC0_DAT1| I/O| MSDC0 Data[1]
0011| SPIM0_MOSI| O| SPI0 (Master) Output
0100| UART0_CTS| I| UART0 CTS
0101| DEBUG_3| O| Debug Signal 3
0110| ANT_SEL3| O| Antenna Select 3
0111| CM33_GPIO_EINT1| I| CM33 EINT1
SDIO_DAT2| 0000| GPIO[10]| I/O| *** I| PU| GPIO 10
0001| SDIO_DAT2| I/O| SDIO Data[2]
0010| MSDC0_DAT2| I/O| MSDC0 Data[2]
0011| I2SIN_DAT0| I| I2S In Data0
0100| UART0_RX| I| UART0 RX
0101| DEBUG_4| O| Debug Signal 4
0110| I2C0_SCL| O| I2C0 Clock
0111| CM33_GPIO_EINT2| I| CM33 EINT2
SDIO_DAT3| 0000| GPIO[11]| I/O| I| PU| GPIO 11
0001| SDIO_DAT3| I/O| SDIO Data[3]
0010| MSDC0_DAT3| I/O| MSDC Data[3]
0011| I2SO_DAT0| O| I2SO Data
0100| UART0_TX| O| UART0 TX
0101| DEBUG_5| O| Debug Signal 5
0110| I2C0_SDA| I/O| I2C0 Data
0111| CM33_GPIO_EINT3| I| CM33 EINT3
GPIO_B_0| 0000| GPIO[12]| I/O| O| PU| GPIO 12
0001| CONN_BGF_UART0_TXD| O| BT General UART TX
0010| MSDC0_RST| O| MSDC0 Reset
0011| CONN_BT_TXD| O| BT Debug UART TX
0100| WIFI_TXD| O| Wi-Fi Debug UART TX
0101| DEBUG_6| O| Debug Signal 6
0110| ANT_SEL3| O| Antenna Select 3
0111| CM33_GPIO_EINT4| I| CM33 EINT4
GPIO_B_1| 0000| GPIO[13]| I/O| I| PU| GPIO 13
---|---|---|---|---|---|---
0001| RSVD| I| RSVD
0010| SPIM1_SCK| O| SPIM1 (Master) Clock
0011| I2SO_BCK| O| I2SO BCK
0100| UART1_RX| I| UART1 RX
0101| DEBUG_7| O| Debug Signal 7
0110| ANT_SEL4| O| Antenna Select 4
0111| CM33_GPIO_EINT5| I| CM33 EINT5
GPIO_B_2| 0000| GPIO[14]| I/O| O| PD| GPIO 14
0001| RSVD| O| RSVD
0010| SPIM1_MOSI| O| SPI1 (Master) Output
0011| I2SO_LRCK| O| I2SO LRCK
0100| RSVD| | RSVD
0101| DEBUG_8| O| Debug Signal 8
0110| ANT_SEL5| O| Antenna Select 5
0111| CM33_GPIO_EINT6| I| CM33 EINT6
GPIO_B_3| 0000| GPIO[15]| I/O| I| PD| GPIO 15
0001| RSVD| I| RSVD
0010| SPIM1_MISO| I| SPI1 (Master) Input
0011| I2SO_MCK| O| I2STX MCLK
0100| I2SIN_MCK| O| I2SRX MCK
0101| DEBUG_9| O| Debug Signal 9
0110| ANT_SEL6| O| Antenna Select 6
0111| CM33_GPIO_EINT7| I| CM33 EINT7
GPIO_B_5
(AUXADC)| 0000| GPIO[17]| I/O| I| PU| GPIO 17
0001| CONN_BGF_UART0_RXD| I| BT General UART RX
0010| UART0_RX| I| UART0 RX
0011| TDMIN_MCLK| I| TDMIN MCLK
0100| DMIC_CLK0| O| DMIC CLK0
0101| DEBUG_11| O| Debug Signal 11
0110| ANT_SEL8| O| Antenna Select 8
0111| CM33_GPIO_EINT9| I| CM33 EINT9
GPIO_B_1| 0000| GPIO[13]| I/O| I| PU| GPIO 13
---|---|---|---|---|---|---
0001| RSVD| I| RSVD
0010| SPIM1_SCK| O| SPIM1 (Master) Clock
0011| I2SO_BCK| O| I2SO BCK
0100| UART1_RX| I| UART1 RX
0101| DEBUG_7| O| Debug Signal 7
0110| ANT_SEL4| O| Antenna Select 4
0111| CM33_GPIO_EINT5| I| CM33 EINT5
GPIO_B_2| 0000| GPIO[14]| I/O| O| PD| GPIO 14
0001| RSVD| O| RSVD
0010| SPIM1_MOSI| O| SPI1 (Master) Output
0011| I2SO_LRCK| O| I2SO LRCK
0100| RSVD| | RSVD
0101| DEBUG_8| O| Debug Signal 8
0110| ANT_SEL5| O| Antenna Select 5
0111| CM33_GPIO_EINT6| I| CM33 EINT6
GPIO_B_3| 0000| GPIO[15]| I/O| I| PD| GPIO 15
0001| RSVD| I| RSVD
0010| SPIM1_MISO| I| SPI1 (Master) Input
0011| I2SO_MCK| O| I2STX MCLK
0100| I2SIN_MCK| O| I2SRX MCK
0101| DEBUG_9| O| Debug Signal 9
0110| ANT_SEL6| O| Antenna Select 6
0111| CM33_GPIO_EINT7| I| CM33 EINT7
GPIO_B_5
(AUXADC)| 0000| GPIO[17]| I/O| I| PU| GPIO 17
0001| CONN_BGF_UART0_RXD| I| BT General UART RX
0010| UART0_RX| I| UART0 RX
0011| TDMIN_MCLK| I| TDMIN MCLK
0100| DMIC_CLK0| O| DMIC CLK0
0101| DEBUG_11| O| Debug Signal 11
0110| ANT_SEL8| O| Antenna Select 8
0111| CM33_GPIO_EINT9| I| CM33 EINT9
GPIO_B_10 (AUXADC)| 0000| GPIO[22]| I/O| I| PD| GPIO 22
---|---|---|---|---|---|---
0001*| CONN_BGF_MCUAICE TCKC| I| BT N10 SWD
0010| PTA_EXT_IF_WLAN_ACT|

O

| *** External PTA WLAN Active
0011| TDMIN_DI| I| TDMIN DI
0100| DMIC_DAT2| I| DMIC Data2
0101| DEBUG_14| O| Debug Signal 14
0110| ANT_SEL10| O| Antenna Select 10
0111| CM33_GPIO_EINT14| I| CM33 EINT14
GPIO_B_11
(AUXADC)| 0000| GPIO[23]| I/O| I| PU| GPIO 23
0001| CONN_BGF_MCUAICE TMSC| I/O| BT N10 SWD
0010| DSP_URXD0| I| DSP UART RX
0011| I2C0_SDA| I/O| I2C0 Data
0100| DMIC_DAT3| I| DMIC Data3
0101| DEBUG_15| O| Debug Signal 15
0110| ANT_SEL11| O| Antenna Select 11
0111| CM33_GPIO_EINT15| I| CM33 EINT15
GPIO_B_12
(AUXADC)| 0000| GPIO[24]| I/O| O| PU| GPIO 24
0001| ADSP_JTAG_TDO| O| DSP JTAG
0010| DSP_UTXD0| O| DSP UART TX
0011| I2C0_SCL| O| I2C0 Clock
0100| DMIC_CLK1| O| DMIC CLK1
0101| RSVD| O| RSVD
0110| ANT_SEL12| O| Antenna Select 12
0111| CM33_GPIO_EINT16| I| CM33 EINT16
GPIO_T_1| 0000| GPIO[42]| I/O| I| PD| GPIO 42
---|---|---|---|---|---|---
0001| RSVD| I| RSVD
0010| DBSYS_SWCLK_TCLK| I| CM33_SWD (Default)
0011| UART1_RX| I| UART1 RX
0100| UART0_RX| I| UART0 RX
0101| DSP_URXD0| I| DSP UART RX
0110| ANT_SEL3| O| Antenna Select 3
0111| CM33_GPIO_EINT1| I| CM33 EINT1
GPIO_T_3| 0000| GPIO[44]| I/O| I| PD| GPIO 44
0001| RSVD| I/O| RSVD
0010| DBSYS_SWDIO_TMS| I| CM33_SWD (Default)
0011| UART1_TX| O| UART1 TX
0100| UART0_TX| O| UART0 TX
0101| DSP_UTXD0| O| DSP UART TX
0110| ANT_SEL5| O| Antenna Select 5
0111| CM33_GPIO_EINT18| I| CM33 EINT18
KPROW_1| 0000| GPIO[48]| I/O| I| PU| GPIO 48
0001| CM33_UART_RX| I| CM33 UART RX (default)
0010| RSVD| O| RSVD
0011| KEYPAD_KPROW_1| I/O| KEYPAD_KPROW_1
0100| DSP_URXD0| I| DSP UART RX
0101| PWM_3| O| PWM 3
0110| ANT_SEL9| O| Antenna Select 9
0111| AUDIO_DEBUG_IN_0| I| AUDIO_DEBUG_IN_0
KPCOL_0| 0000| GPIO[50]| I/O| O| PU| GPIO 50
0001*| CM33_UART_TX| O| CM33 UART TX (default)
0010| RSVD| O| RSVD
0011| KEYPAD_KPCOL_0| I| KEYPAD_KPCOL_0
0100| DSP_UTXD0| O| DSP UART TX
0101| PWM_5| O| PWM 5
0110| ANT_SEL11| O| Antenna Select 11
0111| AUDIO_DEBUG_IN_2| I| AUDIO_DEBUG_IN_2

EVK Schematic

The following figure is the Schematic of EK-AI7931LD

Block Diagram

Base Stamp

Arduino pin holder

GPIO

Documents / Resources

| Acsip EK-AI7931LD Highly Integrated Iot Module [pdf] User Guide
EK-AI7931LD Highly Integrated Iot Module, EK-AI7931LD, Highly Integrated Iot Module, Integrated Iot Module
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