w83977eg Winbond Electronics Corp America, w83977eg Datasheet - Page 3

• Manufacturer Part Number: w83977eg
• Description: Winbond Isa I/o W83977ef W83977eg
• Manufacturer: Winbond Electronics Corp America

Tables of Contents-
1.
2.
3.
4.
5.
6.
GENERAL DESCRIPTION ......................................................................................................... 5
FEATURES ................................................................................................................................. 6
PIN CONFIGURATION ............................................................................................................... 8
PIN DESCRIPTION.................................................................................................................... 9
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
FDC FUNCTIONAL DESCRIPTION ......................................................................................... 19
5.1
5.2
UART PORT ............................................................................................................................. 44
6.1
6.2
Host Interface ................................................................................................................. 9
General Purpose I/O Port ............................................................................................. 11
Serial Port Interface ...................................................................................................... 11
Infrared Interface .......................................................................................................... 12
Multi-Mode Parallel Port ............................................................................................... 13
FDC Interface ............................................................................................................... 17
KBC Interface................................................................................................................ 18
POWER PINS ............................................................................................................... 18
ACPI Interface............................................................................................................... 18
W83977EF/EG FDC ..................................................................................................... 19
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.1.7
Register Descriptions.................................................................................................... 32
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
5.2.9
Universal Asynchronous Receiver/Transmitter (UART A, UART B) ............................ 44
Register Address .......................................................................................................... 44
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
AT interface ..................................................................................................................19
FIFO (Data) ..................................................................................................................19
Data Separator .............................................................................................................20
Write Precompensation ................................................................................................20
Perpendicular Recording Mode ....................................................................................20
FDC Core .....................................................................................................................21
FDC Commands...........................................................................................................21
Status Register A (SA Register) (Read base address + 0)...........................................32
Status Register B (SB Register) (Read base address + 1)...........................................34
Digital Output Register (DO Register) (Write base address + 2) ..................................36
Tape Drive Register (TD Register) (Read base address + 3).......................................36
Main Status Register (MS Register) (Read base address + 4).....................................37
Data Rate Register (DR Register) (Write base address + 4) ........................................37
FIFO Register (R/W base address + 5) ........................................................................39
Digital Input Register (DI Register) (Read base address + 7).......................................41
Configuration Control Register (CC Register) (Write base address + 7) ......................42
UART Control Register (UCR) (Read/Write) ................................................................44
UART Status Register (USR) (Read/Write) ..................................................................47
Handshake Control Register (HCR) (Read/Write) ........................................................48
Handshake Status Register (HSR) (Read/Write)..........................................................48
UART FIFO Control Register (UFR) (Write only)..........................................................49
W83977EF-AW/W83977EG-AW
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