W90221X Winbond Electronics Corp America, W90221X Datasheet - Page 144

• Manufacturer Part Number: W90221X
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

6.6
There are eleven registers included in the Parallel Port Interface (PPI) controller. The I/O
address map is allocated from 0xf0000370 to 0xf000037f.
W90221X version 0.6
Port Address
BA + 0x376 ~
BA + 0x378
BA + 0x379
BA + 0x37a
BA + 0x37b
BA + 0x37c
BA + 0x37d
BA + 0x37e
BA + 0x370
BA + 0x374
BA + 0x375
BA + 0x377
BA + 0x37f
Parallel Port Interface Registers
Symbol
DFIFO
CMD
DSR
DCR
FCR
TOR
DLR
FSR
IER
DR
IIR
-
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
-
Data Line Register
Device Status Register
Device Control Register
FIFO Status Register
FIFO Control Register
Interrupt Enable Register
Interrupt Identification Register
Data Register
Data FIFO
Command Register
Time Out Register
Reserve for PPI future extension
Description
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