W83L517D_05 Datasheet, PDF (35/133 Pages) Winbond – LPC I/O for Notebook

W83L517D/W83L517D-F
HEAD (Bit 3):
This bit indicates the complement of HEAD# output.
0
side 0
1
side 1
INDEX# ^{(Bit 2):}
This bit indicates the value of _INDEX# output.
WP# (Bit 1):
0
disk is write-protected
1
disk is not write-protected
DIR (Bit 0)
This bit indicates the direction of head movement.
0
outward direction
1
inward direction
In PS/2 Model 30 mode, the bit definitions for this register are as follows:
765 43 ²¹ 0
DIR
WP
INDEX
HEAD
TRAK0
STEP F/F
DRQ
INIT PENDING
INIT PENDING (Bit 7):
This bit indicates the value of the floppy disk interrupt output.
DRQ (Bit 6):
This bit indicates the value of DRQ output pin.
STEP F/F (Bit 5):
This bit indicates the complement of latched STEP# output.
TRAK0 (Bit 4):
This bit indicates the complement of TRAK0# input.
HEAD# ^{(Bit 3):}
This bit indicates the value of _HEAD# output.
0
side 1
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Publication Release Date: May 23, 2005
Revision 1.0