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For connections to other external devices refer to the specifications of the
external device.
Transfer format: Intel HEX
Baud rate: 2,400/4,800/9,600/19,200 bps (selectable)
Control mode: RTS/CTS control, XON/XOFF control (valid/invalid)
Bit format: 7 data bits, 2 stop bits, even parity
RTS/CTS Signal Details
Data
transfer
Data
transfer
Transfer processing ends
Transfer processing starts
ON
OFF
ON
OFF
SD (output)
RTS (output)
CTS (input)
Transfer (Voice Unit side)
Data
trans-
fer
Data
trans-
fer
Reception processing ends
Reception processing starts
ON
OFF
ON
OFF
RD (input)
RTS (output)
CTS (input)
(changes depending
on external device)
Receiving (Voice Unit side)
Transmitting
Push the ST/SP switch to turn ON the RTS signal, and starts transmitting
data after confirming that RTS has turned ON.
The CTS signal turns ON each time data has been transferred. The RTS
turns OFF either when transfer processing has been completed normally or
when the ST/SP switch is pushed again.
Receiving
Push the ST/SP switch to turn ON the RTS signal. The RTS signal turns OFF
each time data has been received and stored in the memory of the Voice
Unit.
Voice Unit Communication
Mode Particulars
XMT/RCV Mode
Section 3-7
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