Table of Contents
Advertisement
Figure 5: Block Diagram of Bluetooth Application Interface Connection
3.6.1. UART Interface
FC905A supports an HCI UART as defined in Bluetooth Core Specification Version 5.1. The UART
supports hardware flow control, and it is used for data transmission with host. It supports up to 4.0 Mbps
baud rates.
Table 11: Pin Definition of UART Interface
Pin Name
Pin No.
BT_RTS
41
BT_TXD
42
BT_RXD
43
BT_CTS
44
The following figure shows a reference design for UART interface connection between FC905A and host.
FC905A_Hardware_Design
I/O
Description
DO
Bluetooth UART request to send
DO
Bluetooth UART transmit
DI
Bluetooth UART receive
DI
Bluetooth UART clear to send
Wi-Fi&Bluetooth Module Series
Comment
VIO power domain.
If unused, keep them open.
25 / 51
Advertisement
Table of Contents
