Data transfer control device and electronic instrument
First Claim
Patent Images
1. A data transfer control device that has a Parallel ATA/Serial ATA bus bridge function, the data transfer control device comprising:
- a Parallel ATA interface that is connected to a Parallel ATA bus and provides an interface with a host;
a Serial ATA interface that is connected to a Serial ATA bus and provides an interface with a Serial ATA device; and
a sequence controller that controls a transfer sequence,the Parallel ATA interface including a task file register that is a pseudo register provided to implement a Parallel ATA/Serial ATA bus bridge; and
the Serial ATA interface including a shadow task file register, a register value being transferred between the task file register and the shadow task file register.
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Abstract
A data transfer control device includes a PATA I/F connected to a PATA bus, a SATA I/F connected to a SATA bus, and a sequence controller that controls a transfer sequence. The PATA I/F includes a task file register that is a pseudo register provided to implement a PATA/SATA bus bridge, and the SATA I/F includes a shadow task file register, a register value being transferred between the shadow task file register and the task file register.
20 Citations
15 Claims
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1. A data transfer control device that has a Parallel ATA/Serial ATA bus bridge function, the data transfer control device comprising:
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a Parallel ATA interface that is connected to a Parallel ATA bus and provides an interface with a host; a Serial ATA interface that is connected to a Serial ATA bus and provides an interface with a Serial ATA device; and a sequence controller that controls a transfer sequence, the Parallel ATA interface including a task file register that is a pseudo register provided to implement a Parallel ATA/Serial ATA bus bridge; and the Serial ATA interface including a shadow task file register, a register value being transferred between the task file register and the shadow task file register. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification