W83L517D_05 Datasheet, PDF (36/133 Pages) Winbond – LPC I/O for Notebook

W83L517D/W83L517D-F
1
side 0
INDEX (Bit 2):
This bit indicates the complement of INDEX# output.
WP (Bit 1):
0
disk is not write-protected
1
disk is write-protected
DIR# ^{(Bit 0)}
This bit indicates the direction of head movement.
0
inward direction
1
outward direction
6.2.2 Status Register B (SB Register) (Read base address + 1)
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:
765 4 3 ²¹ 0
11
MOT EN A
MOT EN B
WE
RDATA Toggle
WDATA Toggle
Drive SEL0
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.
MOT EN B (Bit 1)
This bit indicates the complement of the _MOB# output pin.
MOT EN A (Bit 0)
This bit indicates the complement of the _MOA# output pin.
In PS/2 Model 30 mode, the bit definitions for this register are as follows:
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