w83637hg Winbond Electronics Corp America, w83637hg Datasheet - Page 54

• Manufacturer Part Number: w83637hg
• Description: Winbond Lpc I/o Lpc I/o
• Manufacturer: Winbond Electronics Corp America

Register 50h ~ 5Fh Bank Select Register - Index 4Eh
Register Location:
Power on Default Value
Attribute:
Size:
Bit 7: HBACS- High byte access. Set to 1, access Register 4Fh high byte register.
Bit 6-3: Reserved. This bit should be set to 0.
Bit 2-0: Index ports 0x50~0x5F Bank select.
Winbond Vendor ID Register - Index 4Fh
Register Location:
Power on Default Value
Attribute:
Size:
Bit 15-8: Vendor ID High Byte if CR4E.bit7=1.Default 5Ch.
Bit 7-0: Vendor ID Low Byte if CR4E.bit7=0. Default A3h.
Winbond Test Register -- Index 50h - 55h (Bank 0)
Set to 0, access Register 4Fh low byte register. Default 1.
Set to 0, select Bank0.
Set to 1, select Bank1.
Set to 2, select Bank2.
15
7
6
4Eh
80h
Read/Write
8 bits
4Fh
<15:0> = 5CA3h
Read Only
16 bits
5
8
7
4
3
2
0
1
- 49 -
0
BANKSEL0
BANKSEL1
BANKSEL2
Reserved
Reserved
Reserved
Reserved
HBACS
VIDH
VIDL
Publication Release Date: March, 2006
W83637HF/HG
Revision 1.6