Jinan USR IOT Technology WIFI232-A, Руководство пользователя

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USR-WIFI232-A/B/C User Manual http://www.usriot.com
Jinan USR IOT Technology Limited Page 14 of 93 tec@usr.cn
P H Y _T X +
P H Y _R X +
nR eady /G P IO 9
R E S E T
U A R T_R T S /G P IO 5
U A R T _T X D /G P IO 3
G N D
P H Y _T X -
P H Y _R X -
nR eload /G P IO 1 0
n L in k /G P IO 8
U A R T_C T S /G P IO 6
U A R T_R X D /G P IO 4
3.3V
Figure 8
USR-WIFI232- USR-WIFI232- USR-WIFI232- USR-WIFI232-A/B A/B A/B A/B Pins Pins Pins Pins Map Map Map Map
Table 3
USR-WIFI232-A/B Pins Definition
Pin
Pin
Pin Pin Description
Description
Description Description Name
Name
Name Name Directi
Directi
Directi Directio
o
o o
n n n n
Note
Note
Note Note
1 1 1 1 Ground--GND GND Power Ground
2 2 2 2 VCC 3.3V@350mA 3.3V Power 3.3V @ 350mA power input
3
3 3
3 UART Data Transmit UART_TXD O If not use UART function,
this 4 pins can be configured
as GPIO pins, and can
change GPIO pin status
through AT command
GPIO GPIO3 I/O
4
4
4 4 UART Data Receive UART_RXD I
GPIO GPIO4 I/O
5
5
5 5 UART sends request
of data transmission UART_RTS O
GPIO GPIO5 I/O
6 6 6 6 UART receives data
transmission
permission UART_CTS I
GPIO GPIO6 I/O
7 7 7 7 Module reset signal RESET I “Low ( 0 )” effective reset
input.
The reset duration should be
kept more than 300ms
8 8 8 8 WiFi status Indication nLink O “0”- WIFI connection
available
“1”- No WIFI connection
Can be configured as GPIO.
GPIO GPIO8 I/O
9 9 9 9 Indicate the module
status of power on
process nReady O “0” or “Palmodic Signal” -
Finish module boot up
process;
“1” - Module boot up not
finish.
Can be configured as GPIO.
GPIO GPIO9 I/O
10 10 10 10 Restore configuration nReload I Module will Restore factory
default configuration after set
this pin “0” more than 1s,
then set “1”.
GPIO GPIO10 I/O
11 11 11 11 Ethernet Input+ I +1.8V Ethernet Data
Interface
12
12
12 12 Ethernet Input- PHY_RX- I