Epson ActionLaser 1300 EPL-3000 Service Manual page 23

EPL-3000 /ActionLaser 1300 Service Manual
Figure 1-5 shows the negotiation timing chart.
DATA
STROBE
AUTO-FEED
BUSY
PE
ERROR
Note 1: The signal is set to HIGH when not sending data.
The signal is set to LOW when sending data.
Note 2: The signal is set to HIGH if the extension request value is 04h.
3:
Note HB DA: Host Busy Data Available
HB DNA: Host Busy Data Not Available
Figure 1-6 shows the data transfer timing chart.
DATA
SEL-IN
STROBE
AUTO-FEED
BUSY Peripheral Busy Statu$
PE
ERROR
Note 1: The signal is set to HIGH when not sending data.
The signal is set to LOW when sending data.
Note2: The signal is set to HIGH if the extension request value is 04h.
Note3: HB DA: Host Busy Data Available
HB DNA: Host Busy Data Not Available
Rev. A
Peripheral Busy Status
Compatibility
Figure 1-5. Negotiation Timing Chart
Bit 3
Bit 2
Bit 1
Bit O
HB DA
Figure 1-6. Data Transfer Timing Chart
x
OOh or 04 h
/
\
\
/ \
:
HB DA or
Negotiation
HB DNA
(Note 3)
Bit Peripheral 8usy Status
7
Bit 6
Bit 5
Bit 4
Negotiation
HB DAor
HB DNA
(Note
General Description
:
Idle or
Transfer
N&e 2 ;
3)
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