Epson LQ-2550 Technical Manual page 268

Pin
Signal Direction
Name
No.
11
DIN 1
18
22
29
19 STB
9 BUSY
2 0
3 4 BSSL
3 0
31 WR
3 2 C s
33
36 EBUSY
37 BSYF
38 RDY
1
8 BO 1
3
2
38
41
I
4
. . 1
,
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Table A-1 1. M5461OP Terminal Functions
8-bit parallel
8-bit parallel l/F data (1 to 8)
STROBE pulse
BUSY signal
BUSY signal output timing IC (1 4A: PO, pin 30)
O: Leading edge of the STROBE signal
1: Trailing edge
BUSY signal selection
O: When ACKI changes from LOW to
1: When CS"WR changes from
Read strobe
Write strobe
Chip select signal (-MMIOO, pin 19)
Data bit 2
Data bit 3
BUSY flag
Ready signal
Data bit O
HOST PE signal
i RXD s i g n a l
Data bit 1
- - i - -
Description
I/F data (8 to 1)
HIGH
toLOW.
changes HIGH to LOW.
A - 2 3
REV.-A
HIGH, BUSY
changes
HIGH to LOW, BUSY
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