10/100M Ethernet Interface; Ethernet Connection With Transformer - Jinan USR IOT Technology WIFI232-A User Manual

USR-WIFI232-A/B/C User Manual http://www.usriot.com
nReady- Module boot up ready signal. Output. Logics "0" effective.
nReady- nReady- nReady-
There is 4.7K Ohm pull-up resister internal up to 3.3V. The module will output "0" "or "Palmodic
Signal" after normal boot up. This signal used to judge if module finish boot up and ready for
application or working at normal mode.
nLink- nLink- nLink- Module WIFI connection indication. Output.
nLink-
There is 4.7K Ohm pull-up resister internal up to 3.3V. When module connect to AP (STA mode)
or some WiFi STA connect to module (AP mode), the module will output "0". This signal used to
judge if module already at WiFi connection status.
nReload- Module restore to factory default configuration.Input. Logics "0" effective.
nReload nReload nReload
User can assert nReload signal "0" more than 3's through button or MCU pin, then release,
module will restore to factory default configuration and re-start boot up process. User need add
4.7K~10K Ohm pull-up resister external the module.
UART_TXD/RXD- UART port data transmit and receive signal.
There is 1K Ohm pull-down resister internal. User can't add pull-up resister at these pins.

3.5.2 10/100M Ethernet Interface

USR-WIFI232-A/B/C modules provide one 10/100M Ethernet PHY layer interface for data
transition or user configuration. This Ethernet support with transformer and without transformer
(PHY-to-PHY) 2 kinds of connection.

3.5.2.1 Ethernet Connection with Transformer

User board put Ethernet transformer and RJ-45 connector. This is a general 10/100M Ethernet
phy layer connection. The reference design as following:
(Above is for USR-WIFI232-A/B pin type module, Below is for SMD type USR-WIFI232-C)
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