W90220F Winbond Electronics Corp America, W90220F Datasheet - Page 48

• Manufacturer Part Number: W90220F
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

The above information is the exclusive intellectual property of Winbond Electroncs Corp. and shall not be dsiclosed or distributed or reproduced without permission from
Winbond.
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Data Line Register (DL)
Port address : 0xf0000378
Bits 0-7 Data Lines status
This is the standard parallel port data register. Writing to this register will drive data to the
parallel port data lines. Reads to this register return the value on the data lines.
Device Status Register (DSR)
Port address : 0xf0000379
Bits 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
BUSY#
0
0
Inverted version of Parallel Port Interface "BUSY" signal
Version of Parallel Port Interface "nACK" signal
Version of Parallel Port Interface "PError" signal
Version of Parallel Port Interface "Select" signal
Version of Parallel Port Interface "nFault" signal
Echo device data FIFO "empty" status
Echo device data FIFO "full" status
0 = device data FIFO is not empty
1 = device data FIFO is empty
0 = device data FIFO is not full
1 = device data FIFO is full
nACK
1
1
PE
2
2
Read/Write
Read only
8-bit Data Lines status
SEL
3
3
nFAULT
4
4
Power-on Default : --
Power-on Default : ---
EMPTY
5
5
FULL
6
6
CMDtrue
7
7
W90220F
Version 0.84