3) table of parallel i/f signals, A - 2 – Oki 6E User Manual
Page 174
A - 2
3)
Table of parallel I/F signals
Pin No.
1
2-9
10
11
12
13
14
15
16
17
18
19
20-27
28
29
30
31
32
33
34
35
36
Signal Name
Data Strobe
Data Bit n
Acknowledge
Busy
Paper End
Select
Auto Feed
—
0V
Chassis Groud
5V
0V
0V
0V
0V
0V
Input Prime
Fault
0V
—
—
Select In
Signal Direction
→
Printer
↔
Printer
Printer
→
Printer
→
Printer
→
Printer
→
→
Printer
—
—
—
Printer
→
—
—
—
—
—
→
Printer
Printer
→
—
—
Printer
→
→
Printer
Logic
Negative
Positive
Negative
Positive
Positive
Positive
Negative
—
—
—
—
—
—
—
—
—
Negative
Negative
—
—
—
Negative
Functions
Data strobe
Data line from/to host
Completion of reception or function
Data reception not possible
No paper
On-line
Mode switch request
Not used
Signal groud
Frame ground
Power supply (max. 50mA)
Signal ground
Signal groud
Signal Groud
Signal groud
Signal groud
Initialize
Error occurrrence, On-line
Signal groud
Not used
Fixed to logic "1"
Mode switch request
Nibble
Host Clk
Data 1(LSB) ~ 8(MSB)
PtrClk
PtrBusy
AckDataReq
Xllag
HostBusy
Not definend
Logic Gnd
Chassis Gnd
Peripheral Logic High
Signal Ground (nStrobe)
Signal Ground (Data 1~ 8)
Signal Ground (PError, Select, nAck)
Signal Ground (Busy, nFault)
Signal Ground (nAutoFd, nSelectln, nlnit)
Not Defined
Not Defined
Not Defined
nlnit
nDataAvail
nReverseRequest
nPeriphRequest
1284 Active
1284 Active
ECP
HostClk
PeriphClk
PeriphAck
nAckReverse
Xflag
HostAck
Compatible
nStrobe
nAck
Busy
PError
Select
nAutoFd
nlnit
nFault
nSelectln