W83787IF Datasheet, PDF (51/123 Pages) Winbond – WINBOND I/O WITH SERIAL-INFRARED SUPPORT

W83787IF
5.3.1 ECP Register and Mode Definitions
NAME
ADDRESS
I/O
data
Base+000h
R/W
ecpAFifo
Base+000h
R/W
dsr
Base+001h
R
dcr
Base+002h
R/W
cFifo
Base+400h
R/W
ecpDFifo
Base+400h
R/W
tFifo
Base+400h
R/W
cnfgA
Base+400h
R
cnfgB
Base+401h
R/W
ecr
Base+402h
R/W
ECP MODES
000-001
011
All
All
010
011
110
111
111
All
FUNCTION
Data Register
ECP FIFO (Address)
Status Register
Control Register
Parallel Port Data FIFO
ECP FIFO (DATA)
Test FIFO
Configuration Register A
Configuration Register B
Extended Control Register
Note: The base addresses are 3BCH, 378H, and 278H, which are determined by configuration register or hardware setting.
MODE
000
001
010
011
100
101
110
111
DESCRIPTION
SPP mode
PS/2 Parallel Port mode
Parallel Port Data FIFO mode
ECP Parallel Port mode
EPP mode (If this option is enabled in the CR9 and CR0 to select ECP/EPP mode)
Reserved
Test mode
Configuration mode
Note: The mode selection bits are bit 7-5 of the Extended Control Register.
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Publication ReleaseDate:Sep 1995
Revision A1