User's Guide

LE920A4 HW User Guide Module Connections
Doc#: 1VV0301261 Pin-out
Rev. 4.7.1 Page 23 of 124 2019-11-21
3. Module Connections
Pin-out
Table 7: Pin-out
PAD Signal I/O Function Type Comment
USB HS 2.0 Communication Port
D19 USB_D+ I/O USB differential data(+)
F19 USB_D- I/O USB differential data(-)
A18 USB_VBUS AI Power sense for the internal USB
transceiver
Power
B19 USB_ID AI USB ID for supporting USB2.0
OTG
Asynchronous UART
AH19 C103/TXD I Serial data input (TXD) from DTE 1.8V
AF19 C104/RXD O Serial data output to DTE 1.8V
AA18 C105/RTS I
Input for Request To Send signal
(RTS) from DTE
1.8V
AK19 C106/CTS O Output for Clear To Send signal
(CTS) to DTE
1.8V
AG18 C107/DSR O Output for Data Set Ready (DSR)
to DTE
1.8V
AC18 C108/DTR I Input for Data Terminal Ready
(DTR) from DTE
1.8V
AE18 C109/DCD O Output for Data Carrier Detect
(DCD) to DTE
1.8V
AJ18 C125/RING O
Output for Ring Indication (RI) to
DTE
1.8V
Asynchronous Auxiliary UART
AB19 TX_AUX O Auxiliary UART (Tx Data to DTE) 1.8V
AD19 RX_AUX I Auxiliary UART (Rx Data from
DTE)
1.8V
SPI – Serial Peripheral Interface
P19 SPI_CLK O SPI clock output 1.8V
M19 SPI_MISO I
SPI data Master Input Slave
Output
1.8V