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Introduction

EK-AI7931LD is a evaluation board to developing AI7931LD which highly integrated IoT module that features an ARM® Cortex-M33 application processor, a low power 1x1 802.11a/b/g/n/ax dual-band Wi-Fi subsystem, a Bluetooth v5.0 subsystem and a Power Management Unit (PMU).

The Wi-Fi subsystem and a Bluetooth Low Energy 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.

Furthermore, the AI7931LD is a new Wi-Fi 6/ BT 5 SoC solution including SRAM/ROM memory for IoT industry. The module also supports rich peripheral interfaces, including SDIO, SPI master, I2C, I2S_IN, IR input, UART, AUXADC, PWM, and GPIOs.


Feature diagram
                              


Rich Features

 Main Platform-CM33  Connectivity Standards Alliance-CSA
• FreeRTOS V10 • Matter protocol for IoT industry
• Power Mode: Deep sleep, Suspend, Active   
• FOTA: Firmware Over-The-Air  
• FatFS-USB/SD card/LittleFS-XIP Flash  
USB Audio/Video Classic  
• Security: Security Boot, Trusted Firmware-M, HW crypto engine & TRNG, Anti-rollback, Secure test & debug  
 Wireless Connectivity-WiFi 6/BT 5.2  
802.11 b/g/n/ac/ax station mode (STA)  
802.11 b/g/n/ac SoftAP   
Personal Security: Open, WEP-Open, WPA, WPA2-STA/SoftAP and WPA3 - STA only  
STA-OFDMA DL/UL  
STA-11ax power saving of TWT and deep sleep mode  
STA-WoW  
Networking-IP, SNTP, SSL/TLS, HTTP(S), MQTT(S)   
• BLE Mesh  
• Wi-Fi/BT Coexistence  

The IoT module of AI793X with WiFi6 / BLE5 that can support Matter 1.0 now.


  Developing Resource   Application Reference
⇒    WiFi Matter
⇒    Audio data playback
⇒  Reference design of schematic    
⇒  Product footprint    
⇒     
⇒  Test report of throughput    
⇒  Product SDK with user guide    

Related Products

AI7931LD

ARM Cortex-M33 MCU + Wi-Fi 802.11 a/b/g/n/ac/ax + BLE 5.0

AI7933CLD

ARM Cortex-M33 MCU + Wi-Fi 802.11 a/b/g/n/ac/ax + BLE 5.0 + HiFi4 DSP

EK-AI7931LD KIT

WiFi6 2.4/5G + BT 5

EK-AI7933CLD KIT

WiFi6 2.4/5G + BT 5 + HiFi4 DSP


Teachnical Engine with Acsip Design Core

Mediatek Genio 130

Arm Cortex-M33 with FPU @ 300MHz
Embedded 1MB SRAM + 8MB USH SRAM for applications 
Wi-Fi 1x1 5GHz and 2.4GHz
Bluetooth 5.2
USB2.0, SDIO, SPI master, SPI slave, I2C I2S, IR input, UART, AUXADC, PWm
 

For more information, or for sales inquiries, please contact Acsip Technology Corp. 


General Description of Module

AcSiP Technology Corp. introduces a low-cost and low-power consumption IoT module. This stand-alone module is designed for internet of things (IoT) devices with smart connection and cloud application/services.

AI7931LD is a highly integrated IoT module that features an ARM® Cortex-M33 application processor, a low power 1x1 802.11a/b/g/n/ac/ax dual-band Wi-Fi subsystem, a Bluetooth v5.0 subsystem and a Power Management Unit (PMU).

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, IR input, UART, AUXADC, PWM, and GPIOs.

Part Number Core Flash / Memory Wi-Fi / BLE HW Crypto Peripherals
AI7931LD ARM Cortex-M33 16MB 1T1R 802.11a/b/g/n/ac/ax AES, DES/3DES, GPIO, SDIO, SPI, I2C
300 Mhz SRAM 1MB BT 5.0 SHA, ECC, TRNG UART, ADC, I2S, IR, PWM
  pSRAM 4MB      

EK-AI7931LD Feature and Description

Power source for EK-AI7931LD

  • Micro USB 5V (Con8) or External 5V (J1)
  • Battery of AA or AAA (J25) for this EVK for research

Audio Feature

  • EK-AI7931LD has designed AMIC for audio functionalities
  • 3.5mm audio jack mounted for external speaker
  • Audio header for speaker

                  

Buttons

Button Name Detail
SW1 SYSRST Press SW1 to restart the EK-AI7931LD
SW2 Vol+ Audio volume up button
SW3 Vol- Audio volume down button
SW4 RTC_EINT For AI7933CLD only
SW5 Force DL mode Press SW5 to grigger strapping mode (download mode......)

RGB LED

This EVB has on-board RGB LED which be controlled by SPIM interface and this is Matter demo with this feature.

                

SD Card

There are some registers which placed need to be reworked before using SD card feature.

               

External Connectors

The EK-AI7931LD provides similar pin-out extension connectors for various sensor and device connectivity.


RF Characteristics

User could do further test of RF items through EK-AI7931LD

802.11ax_HT20 Transmit (Conductive)

Item Condition Min. Typ. Max. Unit
Frequency Range   Channel 1   Channel 13  
Tx Power Level OFDM 14 16 18 dBm
Frequency Tolerance   -15 0 15 ppm
Modulation Accuracy All Data Rate - -33 - dB

802.11ax_HT20 Receiver (Conductive)

Item Condition Min. Typ. Max. Unit
Frequency Range   Channel 1   Channel 13  
Min. Input MCS8 PER<10% -69.5 -67.5 -65.5 dBm

Bluetooth Tx Power (Conductive)

Item Condition Min. Typ. Max. Unit

Bluetooth Tx Power

LE Mode-1Mbps - 9 - dBm
LE Mode-2Mbps - 9 - dBm
LE Mode-500kbps - 9 - dBm
LE Mode-125kbps - 9 - dBm

Bluetooth Rx Sensitivity (Conductive)

Item Condition Min. Typ. Max. Unit

Bluetooth Rx Sensitivity

(PER<30.8%)

LE Mode-1Mbps -98 -96 -94 dBm
LE Mode-2Mbps -95 -93 -91 dBm
LE Mode-500kbps -99 -97 -95 dBm
LE Mode-125kbps -104 -102 -100 dBm

Antenna Switch Connector


Related Products

AI7931LD

ARM Cortex-M33 MCU + Wi-Fi 802.11 a/b/g/n/ac/ax + BLE 5.0

AI7933CLD

ARM Cortex-M33 MCU + Wi-Fi 802.11 a/b/g/n/ac/ax + BLE 5.0 + HiFi4 DSP

EK-AI7931LD KIT

WiFi6 2.4/5G + BT 5

EK-AI7933CLD KIT

WiFi6 2.4/5G + BT 5 + HiFi4 DSP


Teachnical Engine with Acsip Design Core

Mediatek Genio 130

Arm Cortex-M33 with FPU @ 300MHz
Embedded 1MB SRAM + 8MB USH SRAM for applications 
Wi-Fi 1x1 5GHz and 2.4GHz
Bluetooth 5.2
USB2.0, SDIO, SPI master, SPI slave, I2C I2S, IR input, UART, AUXADC, PWm
 

For more information, or for sales inquiries, please contact Acsip Technology Corp.                  


Evaluation Board Top View & Description

The EK-AI7931LD board provides an affordable way for user to try out WiFi Node in IoT applications or new concepts of Wi-Fi6/BT5 RF feature evaluation. The development board uses AI7931LD as a standalone development platform of RTOS to implement smart building, home surveillance, industry 4.0 and so on IoT projects. It is based on Genio 130, Mediatek Filogic IoT solution, embedded ARM Cortex-M33 with FPU in package. The HDK enable rich peripherals, cutting edge connectivity and security features, user can develop the app to access cloud services through internet and real-time control multi-tasks for various applications included function purposes.

                


Test & Developing by EK-AI7931LD

                        

User could follow up above steps to know more about AI7931LD development resource through EK-AI7931LD with SDK to test all examples within SW package or implement your application and prove its functions by SDK building, image downloaded to HDK for behavers, scenario verify for sure. 

Read manual & get HDK for essential preparation:

  • EK-AI7931LD_User Guide
  • EK-AI7931LD

Power on & getting Log of default image downloaded into AI7931LD

  1. Driver package install and drivers info check
  2. Configuring RS232 terminal tool for log message showed on tool since power on
  3. Power source choose for EK-AI7931LD board by Con8 (Micro USB) or J1

        

Build Example & Developing Application - Developing your App by HDK & SDK

  • SDK download and build environment setup
  • Examples evaluate and image download
  • User could use common terminal software to control this module by default firmware with commands set which referred to product relevant Commands Set Reference document.

Genio IoT RTOS SDK

User could download SDK to develop IoT application after referring those examples of platform solution.

And within package, there are manuals to help know about SDK in implement and projects built.

  • HDK Configuration for essential preparation
  • Audio capture and playback
  • WiFi Matter

► Genio IoT RTOS SDK


EVK Package Information

Item Count Description
EK-AI7931LD 1 Micro USB for Power source and RS232 I/F
Antenna 1 2.4G/5GHz for WiFi 802.11 a/b/g/n/ac/ax & Bluetooth 5.0

Related Products

AI7931LD

ARM Cortex-M33 MCU + Wi-Fi 802.11 a/b/g/n/ac/ax + BLE 5.0

AI7933CLD

ARM Cortex-M33 MCU + Wi-Fi 802.11 a/b/g/n/ac/ax + BLE 5.0 + HiFi4 DSP

EK-AI7931LD KIT

WiFi6 2.4/5G + BT 5

EK-AI7933CLD KIT

WiFi6 2.4/5G + BT 5 + HiFi4 DSP


Mediatek has been Co-developing with Acsip

                    


For more information, or for sales inquiries, please contact Acsip Technology Corp. 

Item Description Download Link
Genio IoT RTOS SDK AcSip_MT793x_non-NDA_SDK_V3.1.0_230519.tar.gz LoginContact Us
Product Brief AI7931LD_Brief_Ver.05.pdf Free
Product Brief (CN) AI7931LD_Brief(CN)_Ver.04.pdf Free
Product Spec. (Datasheet) AI7931LD_SPEC_Ver.H.pdf LoginContact Us
EVK User Guide EK-AI7931LD_User Guide Ver.F.pdf Free
Application Note AI7931LD_Application Note_Ver.C.pdf LoginContact Us
Item Description Download Link
AI7931LD_CE_Certificate AI7931LD_CE_Certificate.7z LoginContact Us
AI7931LD_FCC_Grant AI7931LD_FCC_Grant.7z LoginContact Us
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