w83l517g Winbond Electronics Corp America, w83l517g Datasheet - Page 118

• Manufacturer Part Number: w83l517g
• Description: Winbond Lpc I/o For Notebook W83l517d/ W83l517d-f
• Manufacturer: Winbond Electronics Corp America

CRF2 (Default 0xFF)
CRF4 (Default 0x00)
FDD0 Selection:
CRF5 (Default 0x00)
FDD1 Selection: Same as FDD0 of CRF4.
DRIVE RATE TABLE SELECT
DRTS1
0
0
1
Bit 7 - 6: FDD D Drive Type
Bit 5 - 4: FDD C Drive Type
Bit 3 - 2: FDD B Drive Type
Bit 1 - 0: FDD A Drive Type
Bit 7: Reserved.
Bit 6: Precomp. Disable.
Bit 5: Reserved.
Bit 4 - 3: DRTS1, DRTS0: Data Rate Table select (Refer to TABLE A).
Bit 2: Reserved.
Bit 1:0: DTYPE0, DTYPE1: Drive Type select (Refer to TABLE B).
= 1
= 0
= 00 Select Regular drives and 2.88 format
= 01
= 10 2 Meg Tape
= 11 Reserved
DRTS0
Disable FDC Precompensation.
Enable FDC Precompensation.
0
1
0
3-mode drive
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
- 118 -
SELECTED DATA RATE
W83L517D/W83L517D-F
1Meg
1Meg
1Meg
2Meg
500K
300K
250K
500K
500K
250K
500K
250K
MFM
250K
150K
125K
250K
250K
125K
250K
125K
FM
---
---
---
---
SELDEN
1
1
0
0
1
1
0
0
1
1
0
0