AcSiP EK-AI7931LD User Manual Download Page 16 | Manualshive

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Product Name

EK-AI7931LD

Version

E

Doc No

912-13802

Date

2022/11/14

Page

15 / 26

PRODUCT USER GUIDE

www.acsip.com.tw

4.6.

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 to figure.8 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.

Figure 8. SD card slot rework

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Summary of Contents for EK-AI7931LD

Page 1: ...Version E Doc No 912 13802 Date 2022 11 14 AcSiP Technology Corp www acsip com tw EK AI7931LD User Guide P r o v i d e d b y A c S i p P r o v i d e d b y A c S i p P r o v i d e d b y A c S i p...

Page 2: ...ory Date Revised Contents Revised By Version 2022 04 29 2022 08 25 2022 09 26 2022 10 20 2022 11 14 Initial Version Add FCC Statement Modify Hardware Features Add EVK Schematic Modify Hardware Feature...

Page 3: ...stalling the FTDI drivers on Microsoft Windows 6 3 Hardware Features 8 3 1 Features Description 8 4 Hardware Feature Configuration 10 4 1 Microcontroller 10 4 2 Power Supply 10 4 3 Audio 13 4 4 Button...

Page 4: ...7 Table 5 GPIO pin multi function definition 18 Figure 1 Front view of EK AI7931LD 4 Figure 2 Jumpers and connectors on the EK AI7931LD 5 Figure 3 COM port associated with the EK AI7931LD 7 Figure 4 D...

Page 5: ...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 t...

Page 6: ...shown in Figure2 Figure 2 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...

Page 7: ...ion 2 2 Installing the FTDI drivers on Microsoft Windows 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 do...

Page 8: ...UCT 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 Figure 3 COM port associated with the EK AI7931LD P r o v...

Page 9: ...th 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 3 1 3 Platform ARM Cortex M33 MCU wi...

Page 10: ...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...

Page 11: ...ry 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 4 2 Power Supply EK AI7931LD...

Page 12: ...in 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...

Page 13: ...ery Connect an external AA or AAA battery to battery pin header J25 to supply power to the system as shown in Figure 5 Please note that remove jumper J2 and plug in jumper J26 Jumper JP5 can be remove...

Page 14: ...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...

Page 15: ...t 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 trigger strapping mode download mode 4 5 RGB LED As Fig...

Page 16: ...into a SD card And note that there are some registers which placed need to be reworked before using SD card Please refer to figure 8 and switch R756 to R757 switch R745 to R751 switch R744 to R750 swi...

Page 17: ...nectivity as shown in Figure 9and 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 Note GPIO 12 GPIO C_...

Page 18: ...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 J8...

Page 19: ...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...

Page 20: ..._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...

Page 21: ...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 SPI...

Page 22: ...N LRCK 0101 UART1_TX O UART1 TX 0110 PTA_EXT_IF_FREQ I External PTA Frequency 0111 CM33_GPIO_EINT11 I CM33 EINT11 GPIO_B_8 AUXADC 0000 GPIO 20 I O I PD GPIO 20 0001 CONN_WF_MCU_AICE_ TCKC I Wi Fi N10...

Page 23: ...M33_GPIO_EINT14 I CM33 EINT14 GPIO_B_11 AUXADC 0000 GPIO 23 I O I PU GPIO 23 0001 CONN_BGF_MCU_AICE_ 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...

Page 24: ...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...

Page 25: ...ase 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 radi...

Page 26: ...ese 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...

Page 27: ...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 con...

Page 28: ...Tai Yuan 1st St Chupei City Hsinchu County 30265 Taiwan R O C Title Size Document Number Drawn Rev Date Sheet of MT7933_BGA_RFB Size 00 Block Diagram 2 2 Friday January 21 2022 1 7 MediaTek Inc 5F No...

Page 29: ...Sheet of MT7933_BGA_RFB Size 01 Base Stamp 2 2 Friday January 21 2022 2 7 LGA_104P_BASE U66B Base_3V3 B5 Base_3V3 B11 Base_3V3 B12 Base_3V3 P4 Base_3V3 P5 IC_VCCIO K14 PHYLDO_OUT N2 VCCIO_L N14 RTC_EV...

Page 30: ...C Title Size Document Number Drawn Rev Date Sheet of MT7933_BGA_RFB Size 02 Arduino pin holder 2 2 Monday February 07 2022 3 7 MediaTek Inc 5F No 5 Tai Yuan 1st St Chupei City Hsinchu County 30265 Tai...

Page 31: ...70 499ohm R0201 C7 C 4 7uF 0402 C0402 R734 R 510 Ohm 0402 1 2 F2 PolyFuse SSMD1812P110TF 16 1 2 R11 R 510 Ohm 0402 1 2 U65 NLSX4373 UDFN8 SMD P0 4 NLSX3373 IOVL1 2 IOVL2 3 VL 1 GND 4 VCC 8 IOVC1 7 IOV...

Page 32: ...R O C Title Size Document Number Drawn Rev Date Sheet of MT7933_BGA_RFB Size 04 Digital RTC 2 2 Tuesday February 08 2022 5 7 MediaTek Inc 5F No 5 Tai Yuan 1st St Chupei City Hsinchu County 30265 Taiw...

Page 33: ...ND 19 OUTPR 18 BSPR 17 PVCCR 16 PVCCR 15 E Pad 29 D6 AU0521M1 NC DIODE SMD AU0521M1 C68 C 0 22uF 0201 C0201 R41 NC 100K 0402 1 2 L2 B1047AS 220M P3 L IND SMD DS75LC J88 1 2 C495 C 1uF 0402 C0402 J6 HE...

Page 34: ...4 R 0 ohm 0402 1 2 J28 HEADER 15X2 1 3 5 7 9 11 13 15 17 19 2 4 6 8 10 12 14 16 18 20 21 22 23 24 25 26 27 28 29 30 R105 R 0 ohm 0402 R0402 FT232RL U13 FTDI_FT232RL SSOP28 SMD P0 65 FT232RL S TXD 1 DT...

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