w83977atg Winbond Electronics Corp America, w83977atg Datasheet - Page 23

• Manufacturer Part Number: w83977atg
• Description: W83877tf Plus Kbc, Gp I/o, Wake-up, Fir, Cir, Pb-free
• Manufacturer: Winbond Electronics Corp America

Multi-Mode Parallel Port, continued
4.6
PD5
PD6
PD7
DRVDEN0
DRVDEN1
GP10
(IRQIN1)
P12
HEAD
SCI
WE
WD
SYMBOL
SYMBOL
FDC Interface
PIN
PIN
10
26
24
23
2
3
5
9
OD
OD
OD
OD
OD
OD
I/O
I/O
OD
I/O
OD
IO
IO
I/O
I/O
-
-
-
-
24t
24t
24t
24t
24t
24
24
12
24
24
24
24
24
PRINTER MODE: PD5
Parallel port data bus bit 5. Refer to the description of the parallel port
for the definition of this pin in ECP and EPP mode.
EXTENSION FDD MODE: This pin is a tri-state output.
EXTENSION 2FDD MODE: This pin is a tri-state output.
PRINTER MODE: PD6
Parallel port data bus bit 6. Refer to the description of the parallel port
for the definition of this pin in ECP and EPP mode.
EXTENSION FDD MODE: This pin is a tri-state output.
EXTENSION. 2FDD MODE:
This pin is for Extension FDD A; its function is the same as the
pin of FDC.
PRINTER MODE: PD7
Parallel port data bus bit 7. Refer to the description of the parallel port
for the definition of this pin in ECP and EPP mode.
EXTENSION FDD MODE: This pin is a tri-state output.
EXTENSION 2FDD MODE:
This pin is for Extension FDD A; its function is the same as the
of FDC.
Drive Density Select bit 0.
Drive Density Select bit 1. (CR2A bit 1_0 = 00, default)
General purpose I/O port 1 bit 0. (CR2A bit 1_0 = 01)
Alternate Function from GP10: Interrupt channel input.
KBC P12 I/O port. (CR2A bit 1_0 = 10)
System Control Interrupt. (CR2A bit 1_0 = 11)
In the ACPI power management mode,
management events.
Head select. This open drain output determines which disk drive head is
active.
Logic 1 = side 0
Logic 0 = side 1
Write enable. An open drain output.
Write data. This logic low open drain writes pre-compensation serial
data to the selected FDD. An open drain output.
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W83977ATF/W83977ATG
DSA2
MOA2
FUNCTION
FUNCTION
Publication Release Date: May 2006
SCI
is driven low by the power
Revision 0.6
MOA
DSA
pin