Epson EPL-5500 - Figure 1-4. Parallel Interface State Switch Diagram

Figure 1-4 shows the switch diagram for the parallel interface state.
Forward
Data
Transfer
Forward
Idle
STROBE
ACK and BUSY
Compatibility Mode
Terminate
Negotiation
SLCT IN=HIGH
Failed
Negotiation
Reverse
Data
Transfer
Host Busy
Data
Available
Host Busy
Data Not
Available
ERR=HIGH
No data sent
ERR=LOW
Sending data
ERR=LOW
Sending data
ERR=HIGH
AUTO
FEED=LOW
No data sent
Request to
send data
Reverse
Idle
Interrupt
Host
SLCT IN=LOW
ERR=LOW
AUTO
FEED=LOW
AUTO
FEED=HIGH
Figure 1-4. Parallel Interface State Switch Diagram
General Description EPL-5500 Service Manual
1-12 Rev. B