Epson 4003353 User Manual
Page 19
Service
Product Description
1.3.2 Parallel Interface Specifications
Data format:
serial
Synchronization:
Asynchronous
Handshaking:
By
signal and X-ON/X-OFF protocol
Table 1-10.
and
Protocol
State
Buffer Space
Busy
Less than 512 bytes
off
X-OFF
Ready
More than 1,024 bytes
On
X-ON
Word length
Start bit:
1 bit
Data bit:
8 bit
Parity bit:
none
Stop bit:
1 bit
Bit rate:
57.6K bps
Adaptable connector:
8-pin mini-circular connector
Recommended I/F cable:
System Peripheral-8 cable
Table 1-11. Signal and Connector Pin Assignments for Serial Interface
Pin No.
Signal Name
I/o’
Description
out
Data terminal ready
2
NC
No connection
3
out
Transmit data
4
SG
In
Signal ground
5
In
Receive data
6
out
Balanced transmit
7
NC
No connection
8
In
Balanced receive
* The
indicates the data flow as viewed from the
Rev. A
1-11