Fujitsu MCM3130AP manual READ 12 command, 81 READ 10 command, 82 READ command, Packet Commands

Models: MCM3130AP MCM3064AP

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4.6.9 READ (10) command

4.6 Packet Commands

4.6.9 READ (10) command

Table 4.81 READ (10) command

Bit

7

6

5

 

4

 

3

 

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

Operation Code (28h)

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Logical Unit Number

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

2-5

 

 

 

Logical Block Address

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

7-8

 

 

 

 

Transfer Length

 

 

 

 

 

 

 

 

 

 

 

 

 

9-11

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The READ (10) command reads data for the specified number of blocks from the specified logical block address and transfers it.

Logical Block Address specifies the head logical block address used to start reading.

Transfer Length specifies the number of blocks to be read and transferred.

When Transfer Length is 0, the command does not carry out data transfer. It simply ends normally without reading any data.

4.6.10 READ (12) command

Table 4.82 READ command

Bit

7

6

5

 

4

 

3

 

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

Operation Code (A8h)

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Logical Unit Number

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

2-5

 

 

 

Logical Block Address

 

 

 

 

 

 

 

 

 

 

 

6-9

 

 

 

 

Transfer Length

 

 

 

 

 

 

 

 

 

 

 

 

 

10-11

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This command reads data for the specified number of blocks beginning from the specified logical block address and transfers the data.

Logical Block Address indicates the first logical block address from which reading starts.

Transfer Length indicates the number of blocks to transfer and read.

C156-E227-01EN

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Page 135
Image 135
Fujitsu MCM3130AP, MCM3064AP manual READ 12 command, 81 READ 10 command, 82 READ command, Packet Commands