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Toshiba Corporation Digital Media Network Company
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11.7 Register Description
In the following register descriptions, unused write bit should be treated as “don't care”, and unused read
bits should be read as zeros.
11.7.1 Data Register
- CS0 DA2-DA0 : 0 Read / Write
There are seven commands which execute data transfer from/to this register of the sector buffer for Read
and Write operations. The sector table during Format command and the data associated with the Identify
Device command shall also be transferred to this register.
11.7.1.1 Read/Write command
The register provides a high speed 16 bit path into the sector buffer with PIO and DMA.
11.7.1.2 Read/Write Buffer command
This command provides 16 bit path between host and data buffer in the drive.
11.7.1.3 Format command
This command provides a path for the parameter including interleave table in a sector length.
11.7.1.4 Identify Device command
Drive information is transferred during the execution of this command.
11.7.1.5 Security commands
Password information is transferred during the execution of following four commands.
1) Disable password
2) Erase Unit
3) Set Password
4) Unlock
Data in the register and on the media correspond to each other as follows:
A15 - A8 A7 - A0
transfer 1 D2 D1
transfer 2 D4 D3
: : :
: : :
transfer 256 D512 D511 D1 D2 --- D512 E1 --- E4
transfer 257 E1
: E2
: :
transfer 260 E4
DATA REGISTER DATA FLOW ON THE MEDIA