Epson 4003353 - Manual (Page 17)

Stylus Service Manual
Product Description
1.3 INTERFACE SPECIFICATIONS
The Stylus Color is standard-equipped with an 8-bit parallel and serial interface.
1.3.1 Serial interface Specifications
Data format: 8-bit parallel
Synchronization: By STROBE pulse synchronization
Handshaking: By BUSY and signals
Signal level: TTL compatible
Adaptable connector: 36 pin 57-30360 or equivalent
Data transmission timing: See Figure 1-7.
BUSY
DATA
STROBE
L_-
0.5 (minimum)
0.5 (minimum)
0.5 (minimum)
Figure 1-7. Data Transmission Timing
Note: Transition time (rise time and fall time) of every input signal must be less than 0.2
The Busy signal is active (HIGH) under the following conditions:
- During data reception (See Figure 1-7.)
- When the input buffer is full
- When the INIT input signal is active
- During initialization
- When the ERROR or
signal is active
- During the self-test mode
- During the demonstration mode
- During the default setting mode
- When a fatal error occurs
The ERROR signal is active (LOW) under the following conditions:
- When a paper-out error occurs
- When a no ink cartridge error occurs
- When a fatal error occurs
The PE signal is active (HIGH) under the following conditions:
- When a paper-out error occurs
- When a fatal error occurs
Rev. A 1-9