Bt_En; Uart Interface - Quectel FC64E Hardware Design

Figure 7: Block Diagram of Bluetooth Application Interface Connection
NOTE
The GPIO1 connected to BT_WAKEUP_HOST must be interruptible.

3.6.1. BT_EN

BT_EN is used to control the Bluetooth function of the module. Bluetooth function will be enabled when
BT_EN is at high level. If Bluetooth function is not necessary, pull BT_EN down with 10 K resistor.
Table 8: Pin Definition of BT_EN
Pin Name Pin No.
BT_EN 17

3.6.2. UART Interface

The module supports an HCI UART as defined in Bluetooth Core Specification Version 4.0. The UART
supports hardware flow control, and it is used for data transmission with host. It supports up to 3.2 Mbps
baud rates.
The following table shows the pin definition of UART interface.
Table 9: Pin Definition of UART Interface
Pin Name Pin No.
FC64E_Hardware_Design
I/O Description
Bluetooth enable
DI
control
I/O Description
Wi-Fi&Bluetooth Module Series
Comment
1.8 V power domain.
Active high.
Do not float this pin.
Comment
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