Denso BHT-604B User Manual page 166

BHT-604B
8.1.4 Interface Specifications
IrDA Interface
Specification:
Input signals:
Output signals:
Transmission speed: 9,600 / 19,200 / 38,400 / 57,600 / 115,200 / 460,800 /4M bps
Note: 460,800 bps is only possible when communicating from one BHT-604B unit to another or
with the CU-621. 4 Mbps is only possible for communication with the dedicated CU-611 unit.
The maximum transmission speed in all other cases is 115,200 bps.
Connector Interface
Synchronization:
Transmission speed: Max. 115,200 bps
Signal level:
Pin assignment:
Pin No.
1
2
3
154
IrDA Ver1.3 Low Power physical layer compliant
(Except transmission speed: 460,800 bps)
RD
SD
Start-stop
Conforms to the RS-232C interface
As shown below.
SD RD GND
Signal Name
SG (GND) Signal ground
SD Send data
RD Receive data
Function
BHT
Signal Input/Output
External device
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