w83627hg Winbond Electronics Corp America, w83627hg Datasheet - Page 94

• Manufacturer Part Number: w83627hg
• Description: Winbond Lpc I/o
• Manufacturer: Winbond Electronics Corp America

CRF4 °Default 0x00±
FDD0 Selectionš
CRF5 °Default 0x00±
FDD1 Selectionš Same as FDD0 of CRF4.
DRTS1
DRIVE RATE TABLE
0
0
1
4 - 3
1 - 0
BIT
7
6
5
2
SELECT
Reserved.
Precomp. Disable.
1š Disable FDC Precompensation.
0š Enable FDC Precompensation.
Reserved.
DRTS1, DRTS0š Data Rate Table select °Refer to TABLE A±.
00š Select Regular drives and 2.88 format
01š 3-mode drive
10š 2 Meg Tape
11š Reserved
Reserved.
DTYPE0, DTYPE1š Drive Type select °Refer to TABLE B±.
DRTS0
0
1
0
DRATE1
1
0
0
1
1
0
0
1
1
0
0
1
DATA RATE
DRATE0
TABLE A
1
0
1
0
1
0
1
0
1
0
1
0
- 90 -
DESCRIPTION
SELECTED DATA RATE
1Meg
1Meg
1Meg
2Meg
500K
300K
250K
500K
500K
250K
500K
250K
MFM
W83627HF/ F/ HG/ G
250K
150K
125K
250K
250K
125K
250K
125K
FM
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SELDEN
1
1
0
0
1
1
0
0
1
1
0
0