W83697UG Nuvoton Technology Corporation of America, W83697UG Datasheet - Page 11

• Manufacturer Part Number: W83697UG
• Description: IC LPC SUPER I/O 128-PQFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83697UG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V, 5V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Supplier Unconfirmed, Lead free / RoHS Compliant

5.2 FDC Interface
DRVDEN0
DSKCHG#
SYMBOL
RDATA#
TRAK0#
INDEX#
HEAD#
STEP#
MOA#
MOB#
DSB#
DSA#
DIR#
WD#
WE#
WP#
PIN
10
11
12
13
14
15
16
1
2
3
4
6
7
8
9
OD
OD
OD
OD
OD
OD
OD
OD
OD
OD
IN
IN
IN
IN
IN
I/O
csu
csu
csu
csu
csu
24
24
24
24
24
24
24
24
24
24
Drive Density Select bit 0.
This Schmitt-triggered input from the disk drive is active low
when the head is positioned over the beginning of a track
marked by an index hole. This input pin is pulled up internally by
a 1 KΩ resistor. The resistor can be disabled by bit 7 of L0-
CRF0 (FIPURDWN).
Motor A On. When set to 0, this pin enables disk drive 0. This is
an open drain output.
Drive Select B. When set to 0, this pin enables disk drive B.
This is an open drain output.
Drive Select A. When set to 0, this pin enables disk drive A.
This is an open drain output.
Motor B On. When set to 0, this pin enables disk drive 1. This is
an open drain output.
Direction of the head step motor. An open drain output.
Logic 1 = outward motion
Logic 0 = inward motion
Step output pulses. This active low open drain output produces
a pulse to move the head to another track.
Write data. This logic low open drain writes pre-compensation
serial data to the selected FDD. An open drain output.
Write enable. An open drain output.
Track 0.
active low when the head is positioned over the outermost track.
This input pin is pulled up internally by a 1 KΩ resistor. The
resistor can be disabled by bit 7 of L0-CRF0 (FIPURDWN).
Write protected. This active low Schmitt input from the disk drive
indicates that the diskette is write-protected. This input pin is
pulled up internally by a 1 KΩ resistor. The resistor can be
disabled by bit 7 of L0-CRF0 (FIPURDWN).
The read data input signal from the FDD. This input pin is pulled
up internally by a 1 KΩ resistor. The resistor can be disabled by
bit 7 of L0-CRF0 (FIPURDWN).
Head select. This open drain output determines which disk drive
head is active.
Logic 1 = side 0
Logic 0 = side 1
Diskette change.
whenever the diskette is removed. This input pin is pulled up
internally by a 1 KΩ resistor. The resistor can be disabled by bit
7 of L0-CRF0 (FIPURDWN).
This Schmitt-triggered input from the disk drive is
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This signal is active low at power on and
W83697UF/W83697UG
FUNCTION
Publication Release Date: May 26, 2005
Revision A1