pc87317vul National Semiconductor Corporation, pc87317vul Datasheet - Page 8

• Manufacturer Part Number: pc87317vul
• Description: Pc87317vul/pc97317vul Superi/o Plug And Play Compatible With Acpi Compliant Controller/extender
• Manufacturer: National Semiconductor Corporation

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5.0
4.9
The Digital Floppy Disk Controller (FDC) (Logical Device 3)
5.1
5.2
5.3
5.4
5.5
5.6
5.7
4.8.2
REGISTER BANK TABLES ....................................................................................................... 89
FDC FUNCTIONS ..................................................................................................................... 92
5.1.1
5.1.2
DATA TRANSFER ..................................................................................................................... 93
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
THE FDC REGISTERS ............................................................................................................. 96
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.3.7
5.3.8
5.3.9
THE PHASES OF FDC COMMANDS ..................................................................................... 104
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
THE RESULT PHASE STATUS REGISTERS ........................................................................ 107
5.5.1
5.5.2
5.5.3
5.5.4
FDC REGISTER BITMAPS ..................................................................................................... 109
5.6.1
5.6.2
THE FDC COMMAND SET ..................................................................................................... 112
5.7.1
5.7.2
5.7.3
5.7.4
5.7.5
5.7.6
APC Register Bitmaps ................................................................................................. 84
Microprocessor Interface ............................................................................................. 92
System Operation Modes ............................................................................................ 92
Data Rates ................................................................................................................... 93
The Data Separator ..................................................................................................... 93
Perpendicular Recording Mode Support ..................................................................... 94
Data Rate Selection ..................................................................................................... 94
Write Precompensation ............................................................................................... 95
FDC Low-Power Mode Logic ....................................................................................... 95
Reset ........................................................................................................................... 95
Status Register A (SRA) .............................................................................................. 96
Status Register B (SRB) .............................................................................................. 97
Digital Output Register (DOR) ..................................................................................... 97
Tape Drive Register (TDR) .......................................................................................... 99
Main Status Register (MSR) ...................................................................................... 100
Data Rate Select Register (DSR) .............................................................................. 101
Data Register (FIFO) ................................................................................................. 102
Digital Input Register (DIR) ........................................................................................ 103
Configuration Control Register (CCR) ....................................................................... 104
Command Phase ....................................................................................................... 104
Execution Phase ........................................................................................................ 104
Result Phase ............................................................................................................. 106
Idle Phase .................................................................................................................. 106
Drive Polling Phase ................................................................................................... 106
Result Phase Status Register 0 (ST0) ....................................................................... 107
Result Phase Status Register 1 (ST1) ....................................................................... 107
Result Phase Status Register 2 (ST2) ....................................................................... 108
Result Phase Status Register 3 (ST3) ....................................................................... 109
Standard .................................................................................................................... 109
Result Phase Status .................................................................................................. 111
Abbreviations Used in FDC Commands .................................................................... 113
The CONFIGURE Command .................................................................................... 114
The DUMPREG Command ....................................................................................... 114
The FORMAT TRACK Command ............................................................................. 115
The INVALID Command ............................................................................................ 117
The LOCK Command ................................................................................................ 118
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