US 2004/0167999 A1 · Data transfer control device, electronic instrument, program and method of fabricating electronic instrument

Abstract

Information that is transferred through a bus BUS 1 (conforming to IEEE 1394) is downloaded into a rewrite area storing device information (such as GUID or config ROM) and data transfer control program information (such as a SBP-2 firmware program), and rewriter processing is performed to write the information into the rewrite area. When it is detected that no device is connected to a bus BUS2 (conforming to ATA/ATAPI or IDE), the rewriter processing starts. The detection of whether or not a device is connected to BUS2 is based on the result of an access to a register of the device. In a download mode, the information is written into the rewrite area by transferring data to and from a PC connected to BUS 1.

Claims14

Dependent claims

A data transfer control device for data transfer through a bus, comprising:

a rewriter which loads and writes information transferred through a first bus into a rewrite area of a non-volatile memory storing at least one of device information and data transfer control program information;
and
a rewriter activation section which causes the rewriter to start processing when a second bus is detected to have no connection to any device.

Dependencies are inferred from the claim text.

Data transfer control device, electronic instrument, program and method of fabricating electronic instrument

Life of this patent

Data transfer control device, electronic instrument, program and method of fabricating electronic instrument

Life of this patent

Abstract

Claims14