W83977G Winbond Electronics Corp America, W83977G Datasheet - Page 3

• Manufacturer Part Number: W83977G
• Description: W83877TF plus KBC, CIR, RTC, Pb-free
• Manufacturer: Winbond Electronics Corp America

Table of Contents-
1. GENERAL DESCRIPTION ................................................................................................................ 1
2. FEATURES ........................................................................................................................................ 2
3. PIN CONFIGURATION...................................................................................................................... 5
4. PIN DESCRIPTION ........................................................................................................................... 6
5. FDC FUNCTIONAL DESCRIPTION................................................................................................ 17
6. UART PORT .................................................................................................................................... 39
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.1
5.2
6.1
6.2
W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
Host Interface.......................................................................................................................... 6
Advanced Power Management............................................................................................... 8
Serial Port Interface ................................................................................................................ 9
Infrared Interface................................................................................................................... 10
Multi-Mode Parallel Port........................................................................................................ 11
FDC Interface........................................................................................................................ 15
KBC Interface........................................................................................................................ 16
RTC Interface........................................................................................................................ 16
POWER PINS ....................................................................................................................... 16
W83977F/G and W83977AF/AG FDC .................................................................................. 17
Register Descriptions ............................................................................................................ 27
Universal Asynchronous Receiver/Transmitter (UART A, UART B) .................................... 39
Register Address................................................................................................................... 39
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.1.7
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
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
AT interface ............................................................................................................................17
FIFO (Data) ............................................................................................................................17
Data Separator .......................................................................................................................18
Write Precompensation ..........................................................................................................18
Perpendicular Recording Mode ..............................................................................................18
FDC Core ...............................................................................................................................19
FDC Commands.....................................................................................................................19
Status Register A (SA Register) (Read base address + 0).....................................................28
Status Register B (SB Register) (Read base address + 1).....................................................30
Digital Output Register (DO Register) (Write base address + 2) ............................................31
Tape Drive Register (TD Register) (Read base address + 3).................................................31
Main Status Register (MS Register) (Read base address + 4)...............................................33
Data Rate Register (DR Register) (Write base address + 4) ..................................................33
FIFO Register (R/W base address + 5) ..................................................................................34
Digital Input Register (DI Register) (Read base address + 7).................................................36
Configuration Control Register (CC Register) (Write base address + 7) ................................38
UART Control Register (UCR) (Read/Write) ..........................................................................39
UART Status Register (USR) (Read/Write) ............................................................................41
Handshake Control Register (HCR) (Read/Write) ..................................................................42
Handshake Status Register (HSR) (Read/Write)....................................................................43
UART FIFO Control Register (UFR) (Write only)....................................................................44
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