Patent ID: 7269676

Claim:
An apparatus for outputting a serial link to control a device, comprising: an arbiter for receiving first and second serial link request signals, and for outputting a MUX selection signal and one of a first and second serial link grant signal according to a predetermined priority; a first control register for receiving and storing the address, the read/write strobe signal and the data inputted from the first processor through a first bus, and for transmitting a first serial link request signal to an arbiter; a first shift register for receiving the data stored at the first control register, converting the data into serial data, and outputting the serial data in response to a first serial link grant signal applied from the arbiter; a second control register for receiving and storing an address, a read/write strobe signal and data inputted from a second processor through a second bus, and transmitting a second serial link request signal to the arbiter; a second shift register for receiving the data stored at the second control register converting the data into serial data, and outputting the serial data in response to a second serial link grant signal applied from the arbiter; and a multiplexer (MUX) for selectively outputting the selected serial data from either one of the first or second shift registers in response to the MUX selection signal from the arbiter.