Olympus OEP-3, Service Manual

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4-42
OEP-3 V1 (UC)
4-4-2. Communication with Other Boards in Unit
Interface with PRT board
Bi-directional communication is performed by the asynchronous serial communication that uses serial
communication interface CH.0 incorporated into CPU.
Signal line name I/O Description
SY_PRT_TXD Output Communication data (SY
→
PRT)
PRT_SY_RXD Input Communication data (PRT
→
SY)
SY_PRT_RTS Output Communication enable (SY
→
PRT) L:active
PRT_SY_CTS Input Communication enable (PRT
→
SY) L:active
Communication format
System Asynchronous system
Data length 8 bits
Stop bit 1
Parity None
Baud rate 19200 bps
Interface with FMY board
Bi-directional communication is performed by the asynchronous serial communication that uses serial
communication interface CH.1 incorporated into CPU.
Signal line name I/O Description
SY_FMY_TXD Output Communication data (SY
→
FMY)
FMY_SY_RXD Input Communication data (FMY
→
SY)
SY_FMY_RTS Output Communication enable (SY
→
FMY) L:active
FMY_SY_CTS Input Communication enable (FMY
→
SY) L:active
Communication format
System Asynchronous system
Data length 8 bits
Stop bit 1
Parity None
Baud rate 19200 bps