CD1284 Datasheet, PDF (26/176 Pages) Intel Corporation – IEEE 1284-Compatible Parallel Interface Controller with Two High-Speed Asynchronous Serial Ports

CD1284 — IEEE 1284-Compatible Parallel Interface Controller
Table 6. Channel Registers — Parallel Pipeline
(Selected by Channel 0 in CAR)
Name Hex Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page
DER
33 DMAwrerr DMArderr Bufwrerr Bufrderr HR1wrerr HR1rderr HR2wrerr HR2rderr 136
DMABUF
30
15
14
13
12
11
10
9
(H)
8
137
DMABUF
30
7
6
5
4
3
2
1
0
137
(L)
HRSR
34 HR1full HR1tag HR2full HR2tag DMAfull DMAmpty DMAact
Ctnot0
138
LIVR
18
User-Defined Bits
IT2
IT1
IT0
138
PACR
3F ShrtTen ShrtStal StaleOff FIFOlock ClearTO
0
AsyncDMA Unfair
139
PCRR
6C
0
0
0
0
0
0
0
PChReset 140
PFCR
31 FIFOres DMAen DMAdir IntEn
RLEen
setTAG
ErrEn DMAbufWe 140
PFEP
39
0
0
6-Bit Binary FIFO Pointer Value
141
PFFP
38
0
0
6-Bit Binary FIFO Pointer Value
142
PFHR1
35
8-Bit Character Data
142
PFHR2
36
8-Bit Character Data
142
PFQR
3A
Data or Space Available in FIFO — Max 0x’40
143
PFSR
32
FFfull FFempty Timeout HRtag HRdata
Stale
OneChar DataErr 143
PFTR
3B
0
DMA Transfer Threshold
144
RLCR
37
0
7-Bit Unsigned Binary Count
144
SDTCR 3D
8-Bit Stale Data Timer Count
145
SDTPR 3C
8-Bit Stale Data Timeout Value
145
Table 7. Channel Registers — Parallel Port
(Selected by Channel 0 in CAR) (Sheet 1 of 2)
Name Hex
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page
EAR
HTVR
IVR
MDR
NER
NSR
ODR
OVR
PCIER
PCISR
PCR
SCR
25
8-Bit Binary Value
146
24 HTVR[7] HTVR[6] HTVR[5] HTVR[4] HTVR[3] HTVR[2] HTVR[1] HTVR[0] 146
2E
0
0
0
0
A1284
nInit
HstBsy HstClk 147
21
8-Bit Binary Data
148
28
0
RID
0
EPP
RLE
ECP
RVB
RVN
148
29
NegOK
NegFl
HostTO ImedTerm
4-Bit Negotiation Result Code
148
2D
0
0
0
0
A1284
nInit
HstBsy HstClk 149
2B PerBsy PerClk AkDaRq
xFlag
nDatAv
0
0
0
150
22
0
TimEn NegCh
SigCh
EPPAW
DirCh
IDReq
nINIT
150
23
0
TimeOvr NegCh
SigCh
EPPAW
DirCh
IDReq
nINIT
150
20 ManMd E1284
ETxfr
Ig_SEL
HTmrTst[1:0]
MMDir ManOE 151
2A
0
0
0
TstMux
ClrPs
SetPs
EPIrq
RevRq 152
26
Datasheet