F81866A
0: the parallel port is in output mode.
1: the parallel port is in input mode.
It is auto reset to 1 when in SPP mode.
5
DIR
R/W
0
4
3
ACKIRQ_EN
SLIN
R/W
R/W
0
0
Enable an interrupt at the rising edge of ACK#.
Inverted and then drives the parallel port signal SLIN#.
When read, the status of inverted SLIN# is return.
Drives the parallel port signal INIT#.
2
1
0
INIT_N
AFD
R/W
R/W
R/W
0
0
0
When read, the status of INIT# is return.
Inverted and then drives the parallel port signal AFD#.
When read, the status of inverted AFD# is return.
Inverted and then drives the parallel port signal STB#.
When read, the status of inverted STB# is return.
STB
EPP Address Register ⎯ Base + 3
Bit
Name
R/W Default
Description
Write this register will cause the hardware to auto transmit the written data to
the device with the EPP Address Write protocol.
7-0
EPP_ADDR
R/W
00h
Read this register will cause the hardware to auto receive data from the device
by with the EPP Address Read protocol.
EPP Data Register ⎯ Base + 4 – Base + 7
Bit
Name
R/W Default
Description
Write this register will cause the hardware to auto transmit the written data to
the device with the EPP Data Write protocol.
7-0
EPP_DATA
R/W
00h
Read this register will cause the hardware to auto receive data from the device
by with the EPP Data Read protocol.
Parallel Port Data FIFO ⎯ Base + 400h
Bit
Name
R/W Default
Description
Data written to this FIFO is auto transmitted by the hardware to the device by
using standard parallel port protocol.
7-0
C_FIFO
R/W
00h
It is only valid in ECP and the ECP_MODE is 010b.The operation is only for
forward direction.
ECP Data FIFO ⎯ Base + 400h
Bit
Name
R/W Default
Description
Data written to this FIFO when DIR is 0 is auto transmitted by the hardware to
the device by using ECP parallel port protocol.
Data is auto read from device into the FIFO when DIR is 1 by the hardware by
using ECP parallel port protocol. Read the FIFO will return the content to the
system.
7-0
ECP_DFIFO
R/W
00h
It is only valid in ECP and the ECP_MODE is 011b.
30
Jan, 2012
V0. 12P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
