W83627DHG-PT Nuvoton Technology Corporation of America, W83627DHG-PT Datasheet - Page 151

• Manufacturer Part Number: W83627DHG-PT
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG-PT

• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

In PS/2 Model 30 mode, the bit definitions for this register are as follows:
11.2.2 Status Register B (SB Register) (Read base address + 1)
Along with the SA register, the SB 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:
DEFAULT
DEFAULT
NAME
BIT
NAME
BIT
7-6
7
6
5
4
3
2
1
0
5
4
3
2
1
0
BIT
BIT
INIT PENDING. This bit indicates the value of the floppy disk interrupt output.
DRQ. This bit indicates the value of the DRQ output pin.
STEP F/F. This bit indicates the complement of the latched STEP# output.
TRAK0. This bit indicates the complement of the TRAK0# input.
HEAD#. This bit indicates the value of the HEAD# value.
0: Side 1.
1: Side 0.
INDEX. This bit indicates the complement of the INDEX output.
WP.
0: The disk is not write-protected.
1: The disk is write-protected.
DIR#. This bit indicates the direction of head movement.
0: Inward direction.
1: Outward direction.
RESERVED.
DRIVE SEL0. This bit indicates the status of the DO REGISTER, bit 0 (drive-select bit 0).
WDATA TOGGLE. This bit changes state on every rising edge of the WD# output pin.
RDATA TOGGLE. This bit changes state on every rising edge of the RDATA# output pin.
WE. This bit indicates the complement of the WE# output pin.
RESERVED.
MOT EN A. This bit indicates the complement of the MOA# output pin.
PENDING
INIT
7
1
7
0
DRQ
6
1
6
0
STEP F/F
DRIVE
SEL0
NA
5
0
5
W83627DHG-P/W83627DHG-PT
TOGGLE
WDATA
TRAK0#
DESCRIPTION
DESCRIPTION
-141-
4
0
4
0
TOGGLE
RDATA
HEAD#
3
0
NA
3
Publication Release Date: July 09, 2009
WE
INDEX
2
0
2
0
RESERVED
WP
1
0
1
0
Version 1.94
MOT EN
DIR#
NA
0
0
A
0