Drive/Head Register | Silicon Image SSD-P08G(I)-3521 specs

ATA REGISTERS

SSD-PXXX(I)-3521 DATA SHEET

DRIVE/HEAD REGISTER

The Drive/Head register is used by the host and the device to select the type of addressing (CHS or LBA), the drive letter, and either bits 3-0 of the head number in CHS mode or logical block number bits 27-24 in LBA mode.

Table 40: Drive/Head Register

Operation	D7	D6	D5	D4	D3	D2	D1	D0
Read/Write	1	LBA	1	DRV	HS3	HS2	HS1	HS0
					LBA27 LBA26 LBA25 LBA24
Default	1	0	1	0	0	0	0	0
Value

The Drive/Head register is used by the host to specify one of a pair of ATA drives present in the platform.

Bit(s)	Description

6	LBA. Selects between CHS (0) and LBA (1) addressing mode.

4Drive Address (DRV). Indicates the drive number selected by the host, either 0 or 1.

3-0 HS3 to 0. Indicates bits 3-0 of the head number in CHS addressing mode or LBA bits 27-24 in LBA mode.

•CHS to LBA conversion: LBA = (C x HpC + H) x SpH + S -1

•LBA to CHS conversion:

C = LBA/(HpC x SpH)

H = (LBA/SpH) mod (HpC)

S = (LBA mod(SpH)) + 1

...where:

C is the cylinder number H is the head number S is the sector count

HpC is the head count per cylinder count SpH is the sector count per head count (track)

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3521P-02DSR

PAGE 53

FEBRUARY 2, 2009

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Silicon Image SSD-P08G(I)-3521 manual Drive/Head Register, HS3 HS2 HS1 HS0, LBA27 LBA26 LBA25 LBA24

Contents

Overview Features Added UpdatedRevision History Document No Release Date Changes Table of Contents ATA and True IDE Register Decoding Attribute Memory Description and OperationCommon Memory Description and Operation Space Description and Operation ATA Command Set Related Documentation Sales and Support Part Numbering List of Figures List of Tables SSD-PXXXI-3521 Data Sheet Set Multiple Mode C6h Set Sleep Mode 99h, E6h Physical Dimensions Physical Specifications Product Specifications System Power RequirementsSystem Performance SiliconDrive Part# Capacity Service Life GB Written per Day ReliabilityOperational Life Span Product Capacity Specifications Environmental SpecificationsProduct Capacity Number Bytes Sectors Cylinders Heads Track Pin Assignments Electrical Specification IOIS16# IOCS16# GND Signal Name Pin Type Description Signal Descriptions Dasp Spkr Inpack Csel Ground True IDE modeDmarq GND This signal is not used in this mode PC Card memory Mode IordIowr ATA SEL RDY/-BSYIreq Dmack Reset+5V, +3.3V power PC Card memory Mode REG Iordy This signal is the same for all modes PC Card I/O ModeVoltage Sense Signals Wait Symbol Parameter Minimum Maximum Units IOIS16Absolute Maximum Ratings Capacitance Symbol Parameter Maximum UnitsDC Characteristics Symbol Parameter V ±10% 5V ±10% Units Minimum Maximum Attribute and Common Memory Read Timing Attribute and Common Memory Read Timing Attribute and Common Memory Write Timing Attribute and Common Memory Write Timing O Access Read Timing Access Read Timing O Access Write Timing Access Write Timing True IDE Read/Write Access Timing True IDE Read/Write Access Timing True IDE Multiword DMA Read/Write Access Timing True IDE Multiword DMA Read/Write Access Timing Function REG# CE1# CE2# D158 D70 ModeAttribute Memory Description and Operation Attribute Memory Read Operations Attribute Memory Write Operations Register Operation Addr CE1# Attribute Memory Map Card Information Structure Attribute Data Description of Contents CIS Function Offset Cistplfunce Tpcemi Tpcefs Tpceio Exponent Nominal voltage = VCC nominal value A6h 1Eh IRQ Configuration table entry tuple Tuple code E4h 12h Exponent Nominal voltage = VCC nominal value F0h 4Dh SSD-PXXXI-3521 Data Sheet Card Information Structure Configuration Option Register 200h SresetBits Description Read Changed SigChg IOis8 PwrDn Int Write Default Value Configuration and Status Register 202h Pin Placement Register 204h CrdyRrdy RFU Copy Number Socket Number Default ValueSocket and Copy Register 206h Read/Write Common Memory Description and Operation Common Memory Read OperationsCommon Memory Write Operations O Space Write Operations Function Mode REG# CE1# CE2# A0 IORD# IOWR# D158 D70Space Description and Operation O Space Read Operations ATA and True IDE Register Decoding Memory-Mapped Register DecodingReg# Offset A10 A9A4 OE# = L WE# = L Independent I/O Mode Register Decoding Primary and Secondary I/O Mapped Register Decoding Reg# A10 A9A4Primary Secondary CS0# CS1# DA02 DA01 DA00 Task File Register Specification Media Changed MC. Set to Error RegisterTrack 0 Not Found TKONF. Set when the execute drive ATA Registers Byte Feature RegisterOperation Read/Write Sector Count Register Read/Write Sector Count Default Value Logical Block Number bits A07-A00 LBA Addressing Sector Number Register Logical Block Number bits A15-A08 LBA Addressing Cylinder Low Register Logical Block Number bits A23-A16 LBA Addressing Cylinder High Register Drive/Head Register HS3 HS2 HS1 HS0LBA27 LBA26 LBA25 LBA24 DRQ Corr IDX ERR Drive Write Fault DWF. Always set toStatus Register BSY Drdy Operation Read/Write ATA Command Code Command Register Alternate Status Register Device Control Register SrstNIEN Device Address Register Read/Write NWTG NHS3 NHS2 NHS1 NHS0 NDS1 NDS0 Default Value Class Command Name Registers Used Code ATA Command Block and SET DescriptionATA Command Block and Set Description ATA Command Set ATA Command Set Check Power Mode 98h, E5h Check Power Mode 98h, E5hRegister Executive Drive Diagnostic 90h Executive Drive Diagnostic 90h Drive Head Number LBA27-24 Command 50h Format Track 50hFormat Track 50h Identify Drive ECh Identify Drive ECh Identify Drive Drive Attribute Data Word Data Default Bytes Data Description Address Identify Drive Drive Attribute Data Identify Drive Drive Attribute Data Idle 97h, E3h Idle 97h, E3h Idle Immediate 95h, E1h Idle Immediate 95h, E1h Initialize Drive Parameters 91h Initialize Drive Parameters 91h Drive Command 1Xh Recalibrate 1XhRecalibrate 1Xh Read Buffer E4h Read Buffer E4h LBA Drive Head Number LBA27-24 Command C8hRead DMA C8h Read DMA C8h Drive Head Number LBA27-24 Command C4h Read Multiple C4hRead Multiple C4h Drive Head Number LBA27-24 Command 20h or 21h Read Sector 20h, 21hRead Sector 20h, 21h Drive Head Number LBA27-24 Command 22h or 23h Read Long Sectors 22h, 23hRead Long Sectors 22h, 23h Drive Head Number LBA27-24 Command 40h or 41h Read Verify Sectors 40h, 41hRead Verify Sectors 40h, 41h Drive Head Number LBA27-24 Command 7Xh Seek 7XhSeek 7Xh Feature Operation Set Features EFhSet Features EFh Set Features’ Attributes Set Multiple Mode C6h Set Multiple Mode C6h Set Sleep Mode 99h, E6h Set Sleep Mode 99h, E6h Standby 96h, E2h Standby 96h, E2h Standby Immediate 94h, E0h Standby Immediate 94h, E0h Write Buffer E8h Write Buffer E8h Drive Head NumberLBA27-24 Command CAh Write DMA CAhWrite DMA CAh Drive Head NumberLBA27-24 Command C5h Write Multiple C5hWrite Multiple C5h Drive Head Number LBA27-24 Command 30h or 31h Write Sectors 30h, 31hWrite Sectors 30h, 31h Drive Head Number LBA27-24 Command 32h or 33h Write Long Sectors 32h, 33hWrite Long Sectors 32h, 33h Drive Head Number LBA27-24 Command C0h Erase Sectors C0hErase Sectors C0h Request Sense 03h Extended Error CodesExtended Error Codes Description Request Sense 03h Drive Head Number LBA27-24 Command 87h Translate Sector 87hTranslate Sector 87h Wear-Level F5h Wear-Level F5h Drive Head Number LBA27-24 Command CDh Write Multiple w/o Erase CDhWrite Multiple w/o Erase CDh Drive Head Number LBA27-24 Command 38h Write Sectors w/o Erase 38hWrite Sectors w/o Erase 38h Drive Head Number LBA27-24 Command 3Ch Write Verify 3ChWrite Verify 3Ch 3521 Sales and SupportPart Numbering Part Numbering Nomenclature Part Number Capacity Part Numbers Sample Label Front Label Standard Back Label with Lot Code Information Related Documentation Related Documentation