Bt_Wakeup_Host* And Host_Wakeup_Bt; Pcm Interface - Quectel FC64E Hardware Design

BT_RTS 18
BT_CTS 19
BT_TXD 21
BT_RXD 20
The module provides 1.8 V UART interfaces. A level translator should be used if customers' application is
equipped with a 3.3 V UART interface. A level translator TXS0104 provided by Texas Instruments is
recommended. The following figure shows a reference design.
3.6.3. BT_WAKEUP_HOST*
BT_WAKEUP_HOST and HOST_WAKEUP_BT are used to wake up the host and the module.
Table 10: Pin Definition of BT_WAKEUP_HOST and HOST_WAKEUP_BT
Pin Name
BT_WAKE_HOST
HOST_WAKE_BT
3.6.4. PCM Interface*
The PCM interface is for audio over Bluetooth. The following table shows the pin definition of PCM
interface.
FC64E_Hardware_Design
Bluetooth UART request to
DO
send
DI Bluetooth UART clear to send
DO Bluetooth UART transmit
DI Bluetooth UART receive
Figure 8: Reference Circuit with Translator Chip
and HOST_WAKEUP_BT*
Pin No. I/O Description
41 DO Bluetooth wakes up host
22 DI Host wakes up Bluetooth
Wi-Fi&Bluetooth Module Series
1.8 V power domain.
Comment
1.8 V power domain.
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