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W83977AF-A Datasheet(PDF) 3 Page - Winbond

Part # W83977AF-A
Description  WINBOND I/O
Download  182 Pages
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W83977AF-A Datasheet(HTML) 3 Page - Winbond

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W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
-II
Table of Contents-
1. GENERAL DESCRIPTION ................................................................................................................ 1
2. FEATURES ........................................................................................................................................ 2
3. PIN CONFIGURATION...................................................................................................................... 5
4. PIN DESCRIPTION ........................................................................................................................... 6
4.1
Host Interface.......................................................................................................................... 6
4.2
Advanced Power Management............................................................................................... 8
4.3
Serial Port Interface ................................................................................................................ 9
4.4
Infrared Interface................................................................................................................... 10
4.5
Multi-Mode Parallel Port........................................................................................................ 11
4.6
FDC Interface........................................................................................................................ 15
4.7
KBC Interface........................................................................................................................ 16
4.8
RTC Interface........................................................................................................................ 16
4.9
POWER PINS ....................................................................................................................... 16
5. FDC FUNCTIONAL DESCRIPTION................................................................................................ 17
5.1
W83977F/G and W83977AF/AG FDC.................................................................................. 17
5.1.1
AT interface ............................................................................................................................17
5.1.2
FIFO (Data) ............................................................................................................................17
5.1.3
Data Separator .......................................................................................................................18
5.1.4
Write Precompensation ..........................................................................................................18
5.1.5
Perpendicular Recording Mode ..............................................................................................18
5.1.6
FDC Core ...............................................................................................................................19
5.1.7
FDC Commands.....................................................................................................................19
5.2
Register Descriptions............................................................................................................ 27
5.2.1
Status Register A (SA Register) (Read base address + 0).....................................................28
5.2.2
Status Register B (SB Register) (Read base address + 1).....................................................30
5.2.3
Digital Output Register (DO Register) (Write base address + 2) ............................................31
5.2.4
Tape Drive Register (TD Register) (Read base address + 3).................................................31
5.2.5
Main Status Register (MS Register) (Read base address + 4)...............................................33
5.2.6
Data Rate Register (DR Register) (Write base address + 4) ..................................................33
5.2.7
FIFO Register (R/W base address + 5) ..................................................................................34
5.2.8
Digital Input Register (DI Register) (Read base address + 7).................................................36
5.2.9
Configuration Control Register (CC Register) (Write base address + 7) ................................38
6. UART PORT .................................................................................................................................... 39
6.1
Universal Asynchronous Receiver/Transmitter (UART A, UART B) .................................... 39
6.2
Register Address................................................................................................................... 39
6.2.1
UART Control Register (UCR) (Read/Write) ..........................................................................39
6.2.2
UART Status Register (USR) (Read/Write) ............................................................................41
6.2.3
Handshake Control Register (HCR) (Read/Write) ..................................................................42
6.2.4
Handshake Status Register (HSR) (Read/Write)....................................................................43
6.2.5
UART FIFO Control Register (UFR) (Write only)....................................................................44


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