Every Interface Functions And Pin Definition - Newland NL-8300 User Manual

2.2.4 Every interface functions and pin definition

a． Rs232 interface
① Function: Main CPU using CPLD connected the electronic level conversion chip of
② Every PIN of interface introduction:
PIN1: Grounding
PIN2: Empty
PIN3: Sending date
PIN4: Receiving date
PIN5: Empty
b． Infrared communication interface
① Function: Main CPU using CPLD connect to the infrared diode; achieve the
② Every PIN of interface introduction:
PIN1: Infrared sending
PIN2: Infrared receiving
RS232., can use to connect the serial port.
communication way of RS232 transfers rate 75600bps. Can connect the
infrared serial port communication equipment.