Cylinder high register, Table 39: cylinder high register – Silicon Image SiliconDrive SSD-P16G(I)-3100 User Manual

Page 62

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ATA R

EGISTERS

SSD-P

XXX

(I)-3100 D

ATA

S

HEET

S

ILICON

S

YSTEMS

P

ROPRIETARY

This document and the information contained within it is confidential and proprietary to SiliconSystems, Inc.

All unauthorized use and/or reproduction is prohibited.

3100P-06DSR

P

AGE

52

F

EBRUARY

2, 2009

C

YLINDER

H

IGH

R

EGISTER

The Cylinder High register is set by the host to specify the cylinder number
high byte. Following an ATA command, the content of the register is set
internally by the device, identifying the cylinder number high byte.
In LBA mode, the 8-bit register maintains the contents of the Logical Block
number address bits A23:A16.

Table 39: Cylinder High Register

Operation

D

7

D

6

D

5

D

4

D

3

D

2

D

1

D

0

Read/Write

Cylinder Number Low Byte (CHS Addressing)

Logical Block Number bits A23-A16 (LBA Addressing)

Default Value

0

0

0

0

0

0

0

0

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