PC87391 Datasheet, PDF (125/148 Pages) National Semiconductor (TI) – 100-Pin LPC SuperI/O Devices for Portable Applications

8.0 Legacy Functional Blocks (Continued)
Table 36. Parallel Port Bitmap Summary for Second Level Offset
Register
Second
Level Mnemonic
7
6
Offset
00h Control0
Reserved
Bits
5
4
3
DCR
Register
Live
Freeze Bit
2
Reserved
1
0
EPP Time-
out
Interrupt
Mask
02h
Control2
SPP Com-
patibility
Channel
Address
Enable
Revision
Reserved 1.7 or 1.9
Select
Reserved
04h Control4 Reserved PP DMA Request Inactive Time Reserved PP DMA Request Active Time
05h
PP
Confg0
Bit 3 of
CNFGA
Demand
DMA
Enable
ECP IRQ Channel Number
PE
Internal
Pull-up or
Pull-down
ECP DMA Channel
Number
125
www.national.com