w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 144

• Manufacturer Part Number: w83977atf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

CRF0 (Default 0x00)
11.8 Logical Device 7 (GP I/O Port I)
CR30 (Default 0x00)
CR60, CR 61 (Default 0x00, 0x00)
CR62, CR 63 (Default 0x00, 0x00)
Address Decode).
CR64, CR 65 (Default 0x00, 0x00)
Write Decode).
CR70 (Default 0x00)
Bit 7 - 4: Reserved.
Bit 3: RXW4C
Bit 2: TXW4C
Bit 1 : APEDCRC
Bit 0 : ENBNKSEL; Bank select enable
Bit 7 - 1: Reserved.
Bit 0: = 1 Activates the logical device.
These two registers select GP1 I/O base address [0x100:0xFFF] on 1 byte boundary.
These two registers select GP14 alternate function Primary I/O base address [0x100:0xFFE] on 2
byte boundary; they are available as you set GP14 to be an alternate function (General Purpose
These two registers select GP15 alternate function Primary I/O base address [0x100:0xFFF] on 1
byte boundary; they are available as you set GP15 to be an alternate function (General Purpose
Bit 7 - 4: Reserved.
Bit 3 - 0: These bits select IRQ resource for GP10 as you set GP10 to be an alternate function
= 0
= 1
= 0
= 1
= 0
= 1
= 0
= 1
= 0 Logical device is inactive.
(Interrupt Steering).
No append hardware CRC value as data in FIR/MIR mode.
Append hardware CRC value as data in FIR/MIR mode.
Disable IR Bank selection.
Enable IR Bank selection.
No reception delay when SIR is changed from TX mode to RX mode.
Reception delays 4 characters-time (40 bit-time) when SIR is changed from TX mode
to RX mode.
No transmission delay when SIR is changed from RX mode to TX mode.
Transmission delays 4 characters-time (40 bit-time) when SIR is changed from RX
mode to TX mode.
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Publication Release Date:April 1998
W83977ATF
PRELIMINARY
Revision 0.52