W83977G-A Nuvoton Technology Corporation of America, W83977G-A Datasheet - Page 135

• Manufacturer Part Number: W83977G-A
• Description: IC I/O CONTROLLER 128-PQFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83977G-A

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

CRF4 (Default 0x00)
FDD0 Selection:
CRF5 (Default 0x00)
FDD1 Selection : Same as FDD0 of CRF4.
Note: X means don't care.
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 :
W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
DTYPE1
0
0
0
0
0
1
1
= 1
= 0
= 00 Select Regular drives and 2.88 format
= 01
= 10 2 Meg Tape
= 11 Reserved
DMOD0, DMOD1
Disable FDC Precompensation.
Enable FDC Precompensation.
Specifical application
DPYTE0
: Drive Model select (Refer to TABLE B).
0
0
0
0
1
0
1
DRATE1
-127 -
X
X
1
0
0
1
0
DRATE0
Publication Release Date: May 2006
X
X
1
0
1
0
1
SELDEN
Revision 0.60
1
1
0
0
0
1
0