w83977ctf Winbond Electronics Corp America, w83977ctf Datasheet - Page 103

• Manufacturer Part Number: w83977ctf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

10.0 CONFIGURATION REGISTER
10.1 Chip (Global) Control Register
CR02 (Default 0x00)
CR07
CR20
CR21
CR22 (Default 0xff)
CR23 (Default 0xFE)
Bit 7 - 1: Reserved.
Bit 0: SWRST --> Soft Reset.
Bit 7 - 0: LDNB7 - LDNB0 --> Logical Device Number Bit 7 - 0
Bit 7 - 0: DEVIDB7 - DEBIDB0 --> Device ID Bit 7 - Bit 0 = 0x52 (read only).
Bit 7 - 0: DEVREVB7 - DEBREVB0 --> Device Rev Bit 7-
Bit 0 = 0x7x (read only for W83977CTF).
Bit 7 - 6: Reserved.
Bit 5: URBPWD
Bit 4: URAPWD
Bit 3: PRTPWD
Bit 2, 1: Reserved.
Bit 0: FDCPWD
Bit 7 - 1: Reserved.
Bit 0: IPD (Immediate Power Down). When set to 1, it will put the whole chip into power down
= 0 Power down
= 1 No Power down
= 0 Power down
= 1 No Power down
= 0 Power down
= 1 No Power down
= 0 Power down
= 1 No Power down
mode immediately.
0xFx (read only for W83977EF).
-94 -
Publication Release Date: March 1999
W83977EF/ CTF
PRELIMINARY
Revision A1