Signals – Printronix P7000 Cartridge Ribbon Printer User Manual
Page 273
Signals
273
Signals
Table 13 lists each of the signals associated with the corresponding pins on
the 1284 interface. Descriptions of the signals follow.
Table 13. 1284 Signals
Pin
Source of Data
Type of Mode
Compatible
Nibble
Byte
1
Host
nStrobe
HostClk
Host/Clk
2
Host/Printer
Data 1 (LSB)
3
Host/Printer
Data 2
4
Host/Printer
Data 3
5
Host/Printer
Data 4
6
Host/Printer
Data 5
7
Host/Printer
Data 6
8
Host/Printer
Data 7
9
Host/Printer
Data 8 (MSB)
10
Printer
nAck
PtrClk
PtrClk
11
Printer
Busy
PtrBusy
PtrBusy
12
Printer
PError
AckDataReq
AckDataReq
13
Printer
Select
Xflag
Xflag
14
Host
nAutoFd
Host Busy
HostAck
15
Not Defined
16
Logic Grid
17
Chassis Grid
18
Printer
Peripheral Logic High
19
Signal Ground (nStrobe)
20
Signal Ground (Data 1)
21
Signal Ground (Data 2)
22
Signal Ground (Data 3)
23
Signal Ground (Data 4)
24
Signal Ground (Data 5)
25
Signal Ground (Data 6)