CD1284 Datasheet, PDF (24/176 Pages) Intel Corporation – IEEE 1284-Compatible Parallel Interface Controller with Two High-Speed Asynchronous Serial Ports

CD1284 — IEEE 1284-Compatible Parallel Interface Controller
4.0
Register Summary
4.1
Register Summary Tables
Table 2. Global Registers
Name
CAR
GFRCR
GPDIR
GPIO
MICR
MIR
PIR
PPR
RICR
RIR
SVRR
TICR
TIR
Hex
Bit 7
68
Poll
4F
71
Dir 7
70
Data 7
45
X
69
MdIreq
61
PPIreq
7E
44
X
6B
RxIreq
67 DMAREQ
45
X
6A
TxIreq
Bit 6
Poll
Dir 6
Data 6
X
Mdbusy
PPort
X
Rxbusy
ExtM
X
Txbusy
Bit 5
Bit 4
Bit 3
Poll
Poll
Poll
Firmware Revision Code
Dir 5
Dir 4
Dir 3
Data 5
Data 4
Data 3
X
X
C1
Mdunfair
0
1
Pipeline
0
0
8-Bit Binary Value
X
X
C1
Rxunfair
1
1
ExtT
ExtR
SRP
X
X
C1
Txunfair
1
0
Bit 2
0
Dir 2
Data 2
C0
0
0
C0
0
SRM
C0
0
Bit 1
C1
Dir 1
Data 1
X
ch[1]
0
X
ch[1]
SRT
X
ch[1]
Bit 0
C0
Dir 0
Data 0
X
ch[0]
0
X
ch[0]
SRR
X
ch[0]
Page
108
108
109
109
109
110
111
111
112
112
112
113
113
Table 3. Virtual Registers — Serial
Name Hex Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
MISR
MIVR
PIVR
RDSR
(data)
RDSR
(status)
RIVR
TDR
TIVR
4C DSRch CTSch
41
X
X
40
X
X
62
RIch
X
X
CDch
0
X
X
X
X
Received Character
62 Timeout SC Det2 SC Det1 SC Det0 Break
43
X
X
X
X
X
63
Transmit Character
42
X
X
X
X
X
Bit 2
0
IT2
IT2
PE
IT2
IT2
Bit 1
0
IT1
IT1
FE
IT1
IT1
Bit 0
0
IT0
IT0
OE
IT0
IT0
Page
114
114
115
115
115
116
117
117
Table 4. Virtual Registers — Serial and Parallel
Name Hex
EOSRR 60
Bit 7
X
Bit 6
X
Bit 5
X
Bit 4
X
Bit 3
X
Bit 2
X
Bit 1
X
Bit 0
X
Page
118
24
Datasheet