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Stylus
Color
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
ACKNLG
signals
Signal level:
TTL compatible
level
Adaptable connector:
36 pin 57-30360
(Amphenol)
or equivalent
Data transmission timing:
See Figure 1-7.
BUSY
ACKNLG
DATA
STROBE
L.&
L_-
0.5
ps
(minimum)
0.5
IJS
(minimum)
0.5
ps
(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
ps.
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
PE
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