PC87307VUL National Semiconductor, PC87307VUL Datasheet - Page 132
PC87307VUL
Manufacturer Part Number
PC87307VUL
Description
PC87307/PC97307 Plug and Play Compatible and PC97 Compliant SuperI/O
Manufacturer
National Semiconductor
Datasheet
1.PC87307VUL.pdf
(218 pages)
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6.7.2
0
0
7
7
7
1
7
Printer Status
0
0
6
6
6
Reserved
1
D7
6
A7
ECP Modes Parallel Port Register Bitmaps
ACK Status
0
0
5
5
5
Reserved
0
D6
5
A6
PE Status
0
0
4
4
Direction Control
4
D5
0
A5
Bits 7-5 of ECR = 000 or 001
4
0
0
SLCT Status
3
3
Interrupt Enable
3
D4
0
Bits 7-5 of ECR = 011
A4
3
ERR Status
0
0
1
1
2
D3
2
2
Parallel Port Input Control
A3
0
2
Reserved
Data Bits
Address Bits
0
0
1
1
1
1
1
Printer Initialization Control
D2
A2
0
1
Reserved
0
0
1
Automatic Line Feed Control
0
0
D1
0
0
A1
0
Reset
Required
Reset
Required
Reset
Required
EPP Time-Out Status
Reset
Required
D0
A0
Data Strobe Control
ECP Address Register
ECP Status Register
ECP Data Register
Register (DCR)
Parallel Port (Logical Device 4)
ECP Control
Offset 000h
Offset 000h
Offset 001h
Offset 002h
(DATAR)
(AFIFO)
(DSR)
132
0
0
0
0
0
7
7
7
7
Always 0
D7
D7
D7
0
0
0
0
0
6
6
6
6
Always 0
D6
D6
D6
0
0
0
0
0
5
5
5
5
D5
D5
D5
Always 0
0
0
0
1
1
4
4
4
4
Always 1
D4
D4
D4
0
0
0
0
3
3
3
3
Bits 7-5 of ECR = 010
Bits 7-5 of ECR = 011
Bits 7-5 of ECR = 110
Bits 7-5 of ECR = 111
D3
D3
D3
Bit 7 of PP Confg0
0
0
1
1
0
2
2
2
2
Data Bits
Data Bits
Data Bits
D2
D2
D2
Always 1
0
0
0
0
0
1
1
1
1
D1
D1
D1
Always 0
0
0
0
0
0
0
0
0
0
D0
D0
D0
Configuration Register A
Reset
Required
Reset
Required
Reset
Required
Reset
Required
Always 0
Parallel Port FIFO
Register (CFIFO)
Register (DFIFO)
Register (TFIFO)
ECP Data FIFO
Offset 400h
Offset 400h
Offset 400h
Offset 400h
Test FIFO
(CNFGA)
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