Epson EPL-N1200 Service Manual - Page 28

Data Transfer Timing Chart, Negotiation Timing Chart

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General Description Figure 1-5 shows the timing chart for negotiation. EPL-N1200 Service Manual DATA SEL-IN STROBE AUTO-FEED ACKNLG BUSY PE SLCT ERROR 00h or 04h Peripheral Busy Status Current Peripheral Status Current Peripheral Status Note1 Note 2 Note1 Compatibility Negotiation HB DA or HB DNA (Note 3) Figure 1-5. Negotiation Timing Chart Idle or Transfer 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 extension request value was 04h. Note 3: HB DA: Host Busy Data Available HB DNA: Host Busy Data Not Available Figure 1-6 shows the timing chart for data transfer. DATA SEL-IN STROBE AUTO-FEED ACKNLG BUSY Peripheral Busy Status PE SLCT ERROR Bit 3 Bit 2 Bit 1 Bit 0 Bit 7 Bit 6 Bit 5 Bit 4 Peripheral Busy Status Note 1 Note 2 Note 1 HB DA Negotiation HB DA or HB DNA (Note 3) Figure 1-6. Data Transfer Timing Chart Idle or Transfer 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 extension request value was 04h. Note 3: HB DA: Host Busy Data Available HB DNA: Host Busy Data Not Available 1-16 Rev. A

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Figure 1-5 shows the timing chart for negotiation.
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 extension request value was 04h.
Note 3:
HB DA: Host Busy Data Available
HB DNA: Host Busy Data Not Available
Figure 1-6 shows the timing chart for data transfer.
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 extension request value was 04h.
Note 3:
HB DA: Host Busy Data Available
HB DNA: Host Busy Data Not Available
DATA
SEL-IN
STROBE
AUTO-FEED
ACKNLG
Peripheral Busy Status
BUSY
PE
SLCT
ERROR
HB DA
Negotiation
HB DA or
HB DNA
(Note 3)
Idle or
Transfer
Bit 3
Bit 7
Bit 2
Bit 6
Bit 1
Bit 5
Bit 0
Bit 4
Peripheral Busy Status
Note 1
Note 1
Note 2
Figure 1-6. Data Transfer Timing Chart
DATA
00h or 04h
SEL-IN
STROBE
AUTO-FEED
ACKNLG
Peripheral Busy Status
BUSY
Current Peripheral Status
PE
Note1
Note 2
SLCT
Current Peripheral Status
ERROR
Note1
Compatibility
Negotiation
HB DA or
HB DNA
(Note 3)
Idle or
Transfer
Figure 1-5. Negotiation Timing Chart
General Description
EPL-N1200 Service Manual
1-16
Rev. A