w83627hf-pw Winbond Electronics Corp America, w83627hf-pw Datasheet - Page 92

• Manufacturer Part Number: w83627hf-pw
• Description: W83627hf/f W83627hg/g Winbond Lpc I/o
• Manufacturer: Winbond Electronics Corp America

CRF0 （Default 0x0E）
FDD Mode Register
3 - 2
BIT
7
6
5
4
1
0
FIPURDWN
This bit controls the internal pull-up resistors of the FDC input pins RDATA, INDEX,
TRAK0, DSKCHG, and WP.
0： The internal pull-up resistors of FDC are turned on.（Default）
1： The internal pull-up resistors of FDC are turned off.
INTVERTZ
This bit determines the polarity of all FDD interface signals.
0： FDD interface signals are active low.
1： FDD interface signals are active high.
DRV2EN （PS2 mode only）
When this bit is a logic 0, indicates a second drive is installed and is reflected in status
register A.
Swap Drive 0, 1 Mode
0： No Swap （Default）
1： Drive and Motor sel 0 and 1 are swapped.
Interface Mode
11： AT Mode （Default）
10： Reserved
01： PS/2
00： Model 30
FDC DMA Mode
0： Burst Mode is enabled
1： Non-Burst Mode （Default）
Floppy Mode
0： Normal Floppy Mode （Default）
1： Enhanced 3-mode FDD
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DESCRIPTION
W83627HF/ F/ HG/ G