W83697HFFDC Information Storage Devices, Inc, W83697HFFDC Datasheet - Page 80
W83697HFFDC
Manufacturer Part Number
W83697HFFDC
Description
LPC Interface I/o Plus Game/midi Port, Fan Control, Flash ROM I/f
Manufacturer
Information Storage Devices, Inc
Datasheet
1.W83697HFFDC.pdf
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6.3.2 Data and ecpAFifo Port
Modes 000 (SPP) and 001 (PS/2) (Data Port)
During a write operation, the Data Register latches the contents of the data bus on the rising edge of the
input. The contents of this register are output to the PD0-PD7 ports. During a read operation, ports PD0-
PD7 are read and output to the host. The bit defi nitions are as follows:
Mode 011 (ECP FIFO -Address/RLE)
A data byte written to this address is placed in the FIFO and tagged as an ECP Address/RLE. The
hardware at the ECP port transmits this byte to the peripheral automatically. The operation of this
register is defined only for the forward direction. The bit definitions are as follows:
6.3.3 Device Status Register (DSR)
These bits are at low level during a read of the Printer Status Register. The bits of this status register are
defined as follows:
7
6
7
7
5
6
6
4
5
5
3
4
4
- 71 -
2
3
3
1
2
1
2
1
0
1
1
0
Address/RLE
0
1
Address or RLE
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
nFault
Select
PError
nAck
nBusy
Publication Release Date: Feb. 2002
W83697HF/F
Revision 0.70
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