w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 105
w83977atf
Manufacturer Part Number
w83977atf
Description
Winbond I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83977ATF.pdf
(207 pages)
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11.0 CONFIGURATION REGISTER
11.1 Chip (Global) Control Register
CR02 (Default 0x00)
CR07
CR20
CR21
CR22 (Default 0xff)
CR23
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: IRPWD
Bit 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
(Default
= 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
= 0 Power down
= 1 No Power down
mode immediately.
= 0 12 bit Address Qualification
= 1 16 bit Address Qualification
0xFE)
-133 -
Publication Release Date: Auguest 1997
0x74 (read only).
W83977ATF
PRELIMINARY
Revision 0.51
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