Chapter 2 Product Features
General Purpose Interface
HMI0701 interface distribution shown as below
Ethernet: standard RJ-45 Ethernet port, support standard TCP/IP protocol, 100M Ethernet port, DM9000A, with
connection and transmission indicator.
Pin
Signal Name
1 TX+
2 TX-
3 RX+
4
、
5
2.5V
6 RX-
7
、
8
GND
9~12 LED
13
、
14
Case
Serial Communication Port
AT91SAM9261 itself with a debug serial port, three standard serial port, HMI0701 board leads to an RS-232
standard communication interface, an RS-485 serial interface and a DEBUG port, DEBUG and RS485 serial port are
multiplexed serial.
4
