Smart Module Series
SC690A_Series_Hardware_Design 47 / 105
4.2. UART Interfaces
The module provides 3 UART interfaces:
⚫
UART5:
4-wire UART interface, hardware flow control supported.
⚫
UART1:
4-wire UART interface, hardware flow control supported.
⚫
Debug UART :
2-wire UART interface; used for debugging by default.
Pin definition of the UART interfaces is here as follows:
Table 13: Pin Definition of UART Interfaces
171
USB_SS1_RX_P
26.12
0.32
172
USB_SS1_RX_M
25.80
174
USB_SS1_TX_P
25.53
0.02
175
USB_SS1_TX_M
25.51
161
USB_SS2_RX_M
30.25
-0.33
162
USB_SS2_RX_P
30.58
164
USB_SS2_TX_M
35.50
0.25
165
USB_SS2_TX_P
35.25
Pin Name
Pin No.
I/O
Description
Comment
DBG_TXD
5
DO
Debug UART transmit.
1.8 V power domain.
DBG_RXD
6
DI
Debug UART receive.
UART5_TXD
7
DO
UART5 transmit
UART5_RXD
8
DI
UART5 receive
GPIO_15
249
DO
General-purpose
input/output
Can be multiplexed into
UART5_RTS.
GPIO_14
251
DI
General-purpose
input/output
Can be multiplexed into
UART5_CTS.
UART1_TXD
60
DO
UART1 transmit
