
Advanced Notebook I/O for ISA or LPC Designs
Datasheet
Rev. 0.5 (03-24-05)
Page 4
SMSC SIO10N268
DATASHEET
8.4.4.5
SYNC ..............................................................................................................................................42
8.4.4.6
TAR .................................................................................................................................................42
8.4.4.7
Data.................................................................................................................................................42
8.4.5
Protocol ..................................................................................................................................................43
8.4.5.1
Preamble .........................................................................................................................................43
8.4.6
Read Cycle .............................................................................................................................................43
8.4.6.1
Single Byte ......................................................................................................................................43
8.4.7
Write Cycles............................................................................................................................................44
8.4.7.1
Single Byte ......................................................................................................................................44
8.4.8
Error Reporting .......................................................................................................................................44
8.4.9
FWH Cycle Examples.............................................................................................................................44
8.4.9.1
EXAMPLE 1: FWH 1-Byte Read......................................................................................................44
8.4.9.2
EXAMPLE 2: FWH 1-Byte Write......................................................................................................45
8.5
X-Bus Interface (LPC Mode Only)..................................................................................................... 45
8.5.1
I/O Cycles ...............................................................................................................................................46
8.5.1.1
Conceptual Diagrams of X-Bus I/O interface ...................................................................................47
8.5.2
Memory Cycles .......................................................................................................................................49
8.6
ISA Interface (ISA Mode Only).......................................................................................................... 50
8.6.1
AEN signal..............................................................................................................................................51
8.7
Floppy Disk Controller....................................................................................................................... 51
8.7.1
FDC Internal Registers ...........................................................................................................................52
8.7.1.1
Status Register A (SRA)..................................................................................................................52
8.7.1.2
Status Register B (SRB)..................................................................................................................54
8.7.1.3
Digital Output Register (DOR) .........................................................................................................56
8.7.1.4
Tape Drive Register (TDR) ..............................................................................................................57
8.7.1.5
Data Rate Select Register (DSR) ....................................................................................................58
8.7.1.6
Main Status Register (MSR) ............................................................................................................60
8.7.1.7
Data Register (FIFO) .......................................................................................................................61
8.7.1.8
Digital Input Register (DIR)..............................................................................................................62
8.7.1.9
Configuration Control Register (CCR) .............................................................................................63
8.7.2
Status Register Encoding .......................................................................................................................64
8.7.2.1
Reset ...............................................................................................................................................66
8.7.2.2
Modes Of Operation ........................................................................................................................66
8.7.3
DMA Transfers .......................................................................................................................................67
8.7.4
Controller Phases ...................................................................................................................................67
8.7.4.1
Command Phase.............................................................................................................................67
8.7.4.2
Execution Phase..............................................................................................................................67
8.7.4.3
Data Transfer Termination...............................................................................................................68
8.7.4.4
Result Phase ...................................................................................................................................68
8.7.5
Command Set/Descriptions ....................................................................................................................69
8.7.6
Instruction Set.........................................................................................................................................71
8.7.7
Data Transfer Commands ......................................................................................................................79
8.7.7.1
Read Data .......................................................................................................................................79
8.7.7.2
Read Deleted Data ..........................................................................................................................80
8.7.7.3
Read A Track...................................................................................................................................81
8.7.7.4
Write Data........................................................................................................................................82
8.7.7.5
Write Deleted Data ..........................................................................................................................82
8.7.7.6
Verify ...............................................................................................................................................82
8.7.7.7
Format A Track................................................................................................................................83
8.7.8
Control Commands.................................................................................................................................85
8.7.8.1
Read ID ...........................................................................................................................................85
8.7.8.2
Recalibrate ......................................................................................................................................85
8.7.8.3
Seek ................................................................................................................................................85
8.7.8.4
Sense Interrupt Status.....................................................................................................................86
8.7.8.5
Sense Drive Status..........................................................................................................................87
8.7.8.6
Specify.............................................................................................................................................87
8.7.8.7
Configure .........................................................................................................................................87
8.7.8.8
Version ............................................................................................................................................88
8.7.8.9
Relative Seek ..................................................................................................................................88
8.7.8.10
Perpendicular Mode.........................................................................................................................89