FDC37C672 Ver la hoja de datos (PDF) - SMSC -> Microchip
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FDC37C672 Datasheet PDF : 173 Pages
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Table of Contents
Enhanced Super I/O Controller with Fast IR
Datasheet
FDC37C672 Datasheet Revision History .................................................................................................. 3
Chapter 1 General Description................................................................................................................ 9
Chapter 2 Pin Configuration.................................................................................................................. 10
Chapter 3 Description of Pin Functions ................................................................................................ 12
3.1 Buffer Type Descriptions ............................................................................................................................14
Chapter 4 Description of Multifunction Pins .......................................................................................... 15
Chapter 5 Functional Description.......................................................................................................... 17
5.1 Super I/O Registers....................................................................................................................................17
5.2 Host Processor Interface............................................................................................................................17
Chapter 6 Floppy Disk Controller .......................................................................................................... 18
6.1 FDC Internal Registers...............................................................................................................................18
6.1.1 Status Register A (SRA) .....................................................................................................................19
6.1.2 Status Register B (SRB) .....................................................................................................................21
6.1.3 Digital Output Register (DOR).............................................................................................................23
6.1.4 Tape Drive Register (TDR) .................................................................................................................24
6.1.5 Data Rate Select Register (DSR)........................................................................................................26
6.1.6 Main Status Register...........................................................................................................................29
6.1.7 Data Register (FIFO)...........................................................................................................................29
6.1.8 Digital Input Register (DIR) .................................................................................................................31
6.1.9 Configuration Control Register (CCR).................................................................................................33
6.1.10 Status Register Encoding ................................................................................................................34
6.2 RESET .......................................................................................................................................................36
6.2.1 RESET Pin (Hardware Reset).............................................................................................................36
6.2.2 DOR Reset vs. DSR Reset (Software Reset) .....................................................................................36
6.3 Modes of Operation....................................................................................................................................36
6.3.1 PC/AT mode - (IDENT high, MFM a "don't care") ...............................................................................36
6.3.2 PS/2 mode - (IDENT low, MFM high)..................................................................................................36
6.3.3 Model 30 mode - (IDENT low, MFM low) ............................................................................................36
6.4 DMA Transfers ...........................................................................................................................................37
6.5 Controller Phases.......................................................................................................................................37
6.5.1 Command Phase ................................................................................................................................37
6.5.2 Execution Phase .................................................................................................................................37
6.5.3 Data Transfer Termination ..................................................................................................................38
6.5.4 Result Phase.......................................................................................................................................39
Chapter 7 Command Set/Descriptions ................................................................................................. 40
Chapter 8 Instruction Set ...................................................................................................................... 43
8.1 Data Transfer Commands ..........................................................................................................................49
8.1.1 Read Data ...........................................................................................................................................49
8.1.2 Read Deleted Data..............................................................................................................................51
8.1.3 Read A Track ......................................................................................................................................51
8.1.4 Write Data ...........................................................................................................................................52
8.1.5 Write Deleted Data..............................................................................................................................53
8.1.6 Verify...................................................................................................................................................53
8.1.7 Format A Track ...................................................................................................................................54
8.2 Control Commands ....................................................................................................................................55
8.2.1 Read ID...............................................................................................................................................55
8.2.2 Recalibrate ..........................................................................................................................................55
8.2.3 Seek....................................................................................................................................................56
8.2.4 Sense Interrupt Status ........................................................................................................................56
8.2.5 Sense Drive Status .............................................................................................................................57
8.2.6 Specify ................................................................................................................................................57
8.2.7 Configure ............................................................................................................................................58
8.2.8 Version................................................................................................................................................59
8.2.9 Relative Seek ......................................................................................................................................59
8.2.10 Perpendicular Mode ........................................................................................................................60
8.3 LOCK .........................................................................................................................................................61
SMSC FDC37C672
Page 4
DATASHEET
Rev. 10-29-03
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