w83627sf Winbond Electronics Corp America, w83627sf Datasheet - Page 45
w83627sf
Manufacturer Part Number
w83627sf
Description
Winbond I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83627SF.pdf
(147 pages)
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HEAD# (Bit 3):
This bit indicates the value of HEAD# output.
0
1
INDEX (Bit 2):
This bit indicates the complement of INDEX# output.
WP (Bit 1):
0
1
DIR# (Bit 0)
This bit indicates the direction of head movement.
0
1
3.2.2
This register is used to monitor several disk interface pins in PS/2 and Model 30 modes. In PS/2 mode,
the bit definitions for this register are as follows:
Drive SEL0 (Bit 5):
This bit indicates the status of DO REGISTER bit 0 (drive select bit 0).
WDATA Toggle (Bit 4):
This bit changes state at every rising edge of the WD# output pin.
RDATA Toggle (Bit 3):
This bit changes state at every rising edge of the RDATA# output pin.
WE (Bit 2):
This bit indicates the complement of the WE# output pin.
side 1
side 0
disk is not write-protected
disk is write-protected
inward direction
outward direction
Status Register B (SB Register) (Read base address + 1)
7
1
6
1
5
4
3
2
- 38 -
1
0
MOT EN A
MOT EN B
WDATA Toggle
WE
Drive SEL0
RDATA Toggle
Publication Release Date: Nov. 2000
PRELIMINARY
W83627SF
Revision 0.60
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