Interface Specifications - Denso BHT-604Q User Manual

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-600 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
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）
SD
RD
2D Code Handy Terminal
Function
Signal ground
Send data
Receive data
Signal Input/Output
BHT External device
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