Hardware Rework Guide for MIMXRT685-EVK and AW-AM457-uSD
This section is a brief hardware rework guidance of the EdgeFast Bluetooth PAL on the NXP i.MX MIMXRT685-EVK board and AW-AM457-uSD. The AW-AM457-uSD user guide is available here.The hardware rework has one part:
HCI UART rework
Hardware rework
HCI UART rework
R398 move from 1-2 to 2-3
JP12 2-3
Connect the pins of two boards as the following table.
Pin Name
AW-AM457-uSD
i.MX RT685
PIN NAME
GPIONAME of i.MX RT685
UART_TXD
J10 (pin 4)
J27 (pin 1)
USART4_RXD
FC4_RXD_SDA_MOSI_DATA
UART_RXD
J10 (pin 2)
J27 (pin 2)
USART4_TXD
FC4_TXD_SCL_MISO_WS
UART_RTS
J10 (pin 6)
J47 (pin 9)
USART4_CTS
FC4_CTS_SDA_SSEL0
UART_CTS
J10 (pin 8)
J27 (pin 5)
USART4_RTS
FC4_RTS_SCL_SSEL1
GND
J6 (pin 7)
J29 (pin 6)
GND
GND
Jumper Settings:
Connect J4[2-3] for VIO 3.3 V supply
Connect J11[2-3] for VIO_SD 3.3 V supply
PCM interface rework
Connect the pins of two boards as the following table.
Pin Name |
AW-AM457-uSD |
i.MX RT685 |
PIN NAME of I.MX RT685 |
GPIONAME of I.MX RT685 |
|---|---|---|---|---|
PCM_IN |
J9 (pin 1) |
J47 (pin 7) |
I2S2_TXD |
FC2_RXD_SDA_MOSI_DATA |
PCM_OUT |
J9 (pin 2) |
J28 (pin 4) |
I2S5_RXD |
FC5_RXD_SDA_MOSI_DATA |
PCM_SYNC |
J9 (pin 3) |
J28 (pin 5) |
I2S5_WS |
FC5_TXD_SCL_MISO_WS |
PCM_CLK |
J9 (pin 4) |
J28 (pin 6) |
I2S5_SCK |
FC5_SCK |
GND |
J9 (pin 6) |
J29 (pin 7) |
GND |
GND |
Parent topic:Hardware Rework Guide for MIMXRT685-EVK and AW-AM457-uSD