Communication bus standard – Yamaha DEQ5 User Manual
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3. Communication bus standard
Communication method: Complies with EIA RS-485, asynchronous type
Baud rate:
38.4/9.6 k baud (*1)
Connector:
XLR type male type or female type (*2)
Pin assign:
1 Ground
2 Tx+/Rx+
3 Tx-/Rx-
Mark
Start bit
Start bit
Space
DO
D1
D2
D3
D4
D5
D6
D7
Dp
Baud rate..........9600/38400 baud
Start bit............ 1 bit
Stop bit............. 1 bit
Data bit.............8 bit
Parity................Even number Parity
Logic
Pin 2
Pin3
Mark
1
High
Low
Space
0
Low
High
*3
*1. The standard baud rate should be 9600 baud but 384000 baud can be used if you want transmit at higher
speeds.
*2. Both male and female connectors are provided to make connection between equipment easier.
*3. Set the equipment connected to the RS-485 bus to high impedance except when transmitting.
For transmission, make sure that the bus is set to high impedance before the transmission to avoid signal
collision on the bus.
*4. Dp indicates even number parity.
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