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8 read (10) command, 9 read (12) command – FUJITSU MCE3130AP User Manual

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C156-E142-02EN

4.6.8

READ (10) command

Table 4.77 READ command

Bit

Byte

7

6

5

4

3

2

1

0

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.

4.6.9

READ (12) command

Table 4.78 READ command

Bit

Byte

7

6

5

4

3

2

1

0

0

Operation Code (A8h)

1

Logical Unit Number

Reserved

2-5

Logical Block Address

6-9

Transfer Length

10-11

Reserved

The READ (12) 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.

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