Hardware Rework Guide for MIMXRT685-EVK and Murata uSD-M.2 Adapter
This section is a brief hardware rework guidance of the EdgeFast Bluetooth PAL on the NXP i.MX MIMXRT685-EVK board and the Murata uSD-M.2 adapter. For details on the Murata uSD-M.2 Adapter, see Murata’s uSD-M.2 webpage.
The hardware rework has one part:
HCI UART rework
Hardware rework
HCI UART rework :
JP12 2-3
Connect the pins of two boards as the following table using jumper cables included in Murata’s uSD-M.2 Adapter kit.
Pin name |
uSD-M.2 adapter pin |
i.MX RT685 pin |
Pin name of RT685 |
GPIO name of RT685 |
|---|---|---|---|---|
BT_UART_TXD_HOST |
J9 (pin 1) |
J27 (pin 1) |
USART4_RXD |
FC4_RXD_SDA_MOSI_DATA |
BT_UART_RXD_HOST |
J9 (pin 2) |
J27 (pin 2) |
USART4_TXD |
FC4_TXD_SCL_MISO_WS |
BT_UART_RTS_HOST |
J8 (pin 3) |
J47 (pin 9) |
USART4_CTS |
FC4_CTS_SDA_SSEL0 |
BT_UART_CTS_HOST |
J8 (pin 4) |
J27 (pin 5) |
USART4_RTS |
FC4_RTS_SCL_SSEL1 |
Murata uSD-M.2 jumper settings:
Both J12 and J13 = 1-2 (WLAN-SDIO = 1.8 V; and BT-UART and WLAN/BT-CTRL = 3.3 V)
J1 = 2-3 (3.3 V from uSD connector)
Parent topic:Hardware Rework Guide for MIMXRT685-EVK and Murata uSD-M.2 Adapter