FDC37B787QF SMSC [SMSC Corporation], FDC37B787QF Datasheet - Page 185
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FDC37B787QF
Manufacturer Part Number
FDC37B787QF
Description
Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.FDC37B787QF.pdf
(249 pages)
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Parallel Port, Logical Device 3
PP Mode
Register
Default =
0x3C
on Vcc POR
or
Reset_Drv
PP Mode
Register 2
Default =
0x00
on Vcc POR
or
Reset_Drv
NAME
TABLE 77 - PARALLEL PORT, LOGICAL DEVICE 3 [LOGICAL DEVICE NUMBER = 0X03]
0xF0 R/W
0xF1 R/W
REG INDEX
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
Bit[6:3] ECP FIFO Threshold
0111b (default)
Bit[7] PP Interupt Type
Not valid when the parallel port is in the Printer
Mode (100) or the Standard & Bi-directional Mode
(000).
= 1 Pulsed Low, released to high-Z.
= 0 IRQ follows nACK when parallel port in EPP Mode
or [Printer,SPP, EPP] under ECP.
IRQ level type when the parallel port is in ECP, TEST,
or Centronics FIFO Mode.
Bits[1:0] PPFDC - muxed PP/FDC control
= 00 Normal Parallel Port Mode
= 01 PPFD1: Drive 0 is on the FDC pins
Drive 1 is on the Parallel port pins
Drive 2 is on the FDC pins
Drive 3 is on the FDC pins
= 10 PPFD2: Drive 0 is on the Parallel port pins
Drive 1 is on the Parallel port pins
Drive 2 is on the FDC pins
Drive 3 is on the FDC pins
Bits[7:2] Reserved. Set to zero.
188
DEFINITION
STATE
C
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