
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
8.4.4.6
8.4.4.7
8.4.5
8.4.5.1
8.4.6
8.4.6.1
8.4.7
8.4.7.1
8.4.8
8.4.9
8.4.9.1
8.4.9.2
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
ISA Interface (ISA Mode Only)..........................................................................................................50
8.6.1
AEN signal..............................................................................................................................................51
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
SYNC ..............................................................................................................................................42
TAR.................................................................................................................................................42
Data.................................................................................................................................................42
Protocol ..................................................................................................................................................43
Preamble.........................................................................................................................................43
Read Cycle.............................................................................................................................................43
Single Byte ......................................................................................................................................43
Write Cycles............................................................................................................................................44
Single Byte ......................................................................................................................................44
Error Reporting.......................................................................................................................................44
FWH Cycle Examples.............................................................................................................................44
EXAMPLE 1: FWH 1-Byte Read......................................................................................................44
EXAMPLE 2: FWH 1-Byte Write......................................................................................................45
8.5
8.6
8.7