CD1283 Datasheet, PDF (21/94 Pages) Intel Corporation – IEEE 1284-Compatible Parallel Interface

IEEE 1284-Compatible Parallel Interface — CD1283
Table 4. Parallel Port Registers (Sheet 2 of 2)
Name
ODR
OVR
PCIER
PCISR
PCR
SCR
SPR
SSR
ZDR
Hex Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
2D
0
0
0
0
A1284
2B PerBsy PerClk AkDaRq xFlag
nDatAv
22
0
0
NegCh SigCh
EPPAW
23
0
0
NegCh SigCh
EPPAW
20 ManMd E1284 ETxfr Ig_SEL HTmrTst[1]
2A
0
0
0
0
ClrPs
26
8-Bit Binary Value
2F
0
0
0
0
A1284
2C
0
0
0
0
A1284
Bit 2
nInit
0
DirCh
DirCh
HTmrTst[0]
SetPs
nInit
nInit
Bit 1
HstBsy
0
IDReq
IDReq
MMDir
EPIrq
HstBsy
HstBsy
Bit 0
HstClk
0
nINIT
nINIT
ManOE
RevRq
HstClk
HstClk
Page
70
70
71
71
71
72
73
74
74
Table 5. Special Register
Name
Hex
Bit 7
Bit 6
RCR
05
1
0
Bit 5
0
Bit 4
0
Bit 3
0
Bit 2
0
Bit 1
0
Bit 0
1
Page
74
Datasheet
21