w83977tf Winbond Electronics Corp America, w83977tf Datasheet - Page 106

• Manufacturer Part Number: w83977tf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

11. CONFIGURATION REGISTER
11.1 Chip (Global) Control Register
CR02 (Default 0x00)
CR07
CR20
CR21
CR22 (Default 0xff)
CR23 (Default 0xFE)
CR24 (Default 0b1s000s0s)
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 = 0x97 (read only).
Bit 7 - 0: DEVREVB7 - DEBREVB0 --> Device Rev Bit 7 - Bit 0 =
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
Bit 7: EN16SA
Bit 6: EN48
= 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.
= 0 12 bit Address Qualification
= 1 16 bit Address Qualification
= 0 The clock input on Pin 1 should be 24 Mhz.
= 1 The clock input on Pin 1 should be 48 Mhz.
The corresponding power-on setting pin is SOUTB (pin 53).
-96 -
Publication Release Date: March 1998
0x73 (read only).
W83977TF
PRELIMINARY
Revision 0.62