USR-WIFI232-A/B/C User Manual
http://www.usriot.com
Jinan USR IOT Technology Limited
Page 15 of 93
Support transformer and
direct connection (AC
couple) mode.
13
13
13
13
Ethernet
O
14
14
14
14
Ethernet Output-
PHY_TX-
O
3.1.2
USR-WIFI232-Ca/Cb Pins Definition
Figure 9
USR-WIFI232-
USR-WIFI232-
USR-WIFI232-
USR-WIFI232-Ca/Cb
Ca/Cb
Ca/Cb
Ca/Cb
Figure 10
USR-WIFI232-
USR-WIFI232-
USR-WIFI232-
USR-WIFI232-Ca/Cb
Ca/Cb
Ca/Cb
Ca/Cb Pins
Pins
Pins
Pins Map
Map
Map
Map
Table 4
USR-WIFI232-Ca/Cb Pins Definition
Pin
Description
Name
Directi
on
Note
3,18,19,
20,24,26
GND
GND
Power
Ground
1, 2
VCC
3.3V
Power
3.3V @ 350mA power
input
4
UART Data Transmit
UART_TXD
O
If
not
use
UART
function, this 4 pins
GPIO
GPIO3
I/O