37C957FR Datasheet, PDF (276/328 Pages) SMSC Corporation – ULTRA I/O CONTROLLER FOR PORTABLE APPLICATIONS

RESERVED, Logical Device 1 [Logical Device Number = 0x01]
RESERVED, Logical Device 2 [Logical Device Number = 0x02]
Parallel Port, Logical Device 3 [Logical Device Number = 0x03]
Name
Reg
Index
Definition
PP Mode
Register
Default = 0x3C
0xF0 R/W
Bits[2:0] : Parallel Port Mode
= 100 Printer Mode (default)
= 000 Standard and Bi-directional
(SPP) Mode
= 001 EPP-1.9 and SPP Mode
= 101 EPP-1.7 and SPP Mode
= 010 ECP Mode
= 011 ECP and EPP-1.9 Mode
= 111 ECP and EPP-1.7 Mode
St^Cate
Bit[6:3] : E0C11P1FbIF(dOefTahurlte)shold
Bit[7] : PNPotInvtaelridupwthTeynpethe parallel port is in the
Printer Mode (100) or the
Standard & Bi-directional Mode (000).
=1
Pulsed Low, released to high-Z
(665/666).
= 0 IRQ follows nACK when
parallel port in EPP Mode or [Printer,SPP,
EPP] under ECP.
IRQ level type when the parallel
pCoernt tirsoninicEsCFPIF, OTEMSoTd,eo. r
Parallel Port
CnfgB shadow
0xF1 R/W Bits[2:0] : Parallel Port DMA channel Select
= 000 h/w jumpered 8-bit DMA
C
Register
(default)
= 001 DMA channel 1
Default = 0x00
= 010 DMA channel 2
= 011 DMA channel 3
Bits[5:3] : Parallel Port IRQ line Select
= 000 h/w jumpered IRQ (default)
= 001 IRQ 7
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