Epson Photo PC-750Z, Service Manual, Page: 15 / 94

EPSON PhotoPC-750Z Revision A
Product Description Features 15
[Serial Interface]
The serial interface should be announced as EPSON original
specifications for connecting to a PC/MAC, a printer or a modem, and
the specifications are not open to the public. Connecting a PC/MAC. the
interface is compatible with RS-232C. A PC/MAC is required to support
19.2 kbps transmission rates at the minimum.
Table 1-7. Signal Name for Serial Communication Interface
Camera to PC to printer to modem
Pin assign. Circuits I/O Circuits I/O Circuits I/O Circuits I/O
1 HSKo O prCTS O HSKo O
2 HSKi I -- prSCK I HSKi I
3 TXD- O host RD O TXD- O TXD- O
4 GND GND GND GND
5 RXD- I host SD I RXD- I RXD- I
6 TXD+ O TXD+ O TXD+ O
7 GPi I prDTR I GPi I
8 RXD+ I -- RXD+ I RXD+ I
SHELL shell