SST85LD0128 datasheet(46/73 Pages) SST

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Advance Information

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SST85LD0128 / SST85LD0256 / SST85LD0512

S71319-03-000

2/07

12.2.1.28.1 Set-Max-Address - F9H

The Set-Max-Address command must be immediately preceded by a successful execution of a Read-

Native-Max-Address command. Otherwise the Set-Max-Address command will be interpreted as

another Set-Max command or aborted as an invalid command.

C/D/H

LBA

1: The maximum address value is an LBA value.

0: The maximum address value is a CHS value.

Drive

The selected device.

Bits (3:0)

The native max address head number

(Identify-Device word 3 minus one) or LBA bits (27:24) value to be set.

Cyl High

Contains the maximum cylinder high or LBA bits (23:16) value to be set

Cyl Low

Contains the maximum cylinder low or LBA bits (15:8) value to be set

Sec Num

Contains the native max address sector number (Identify-Device word 6) or

LBA bits (7:0) value to be set

Sec Cnt

Value Volatile

1: The device preserves the maximum values over Power-on or hardware reset.

0: The device reverts to the most recent non-volatile maximum address value

setting over Power-on or hardware reset.

After successful command completion, all Read and Write access attempts to addresses greater than

specified by the successful Set-Max-Address command is rejected with an IDNF error. Identify-Device

response words 1, 54, 57, 58, 60, and 61 reflect the maximum address set with this command.

Hosts should not issue more than one non-volatile Set-Max-Address command after a Power-on or hardware reset.

Devices should report an IDNF error upon receiving a second non-volatile Set-Max-Address command after a

Power-on or hardware reset.

The contents of Identify-Device words and the max address will not be changed if a Set-Max-Address command

fails.

After a successful Set-Max-Address command using a new maximum cylinder number value the content of all

Identify-Device words must comply with the following:

1. The content of words 3, 6, 55, and 56 are unchanged

2. The content of word 1 will equal (the new Set-Max cylinder number + 1) or 16,383, whichever is less

3. The content of words (61:60) equals [(the new content of word 1 as determined by the successful Set-Max-

Address command) * (the content of word 3) * (the content of word 6)]

Bit ->

76543210

Command (7)

F9H

C/D/H (6)

LBA

Drive

Native max address head number or

Set-Max LBA

Cyl High (5)

Set-Max cylinder high or LBA

Cyl Low (4)

Set-Max cylinder low or LBA

Sec Num (3)

Native max address sector number or

Set-Max LBA

Sec Cnt (2)

XVV

Feature (1)

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