METHOD AND APPARATUS FOR BRIDGE CONNECTION BETWEEN JTAG BUS AND SERIAL BUS

摘要

PROBLEM TO BE SOLVED: To provide a system and a method, capable of easily loading configuration codes from a configuration system to an EEPROM Electrically Erasable Programmable Read Only Memory), even if the EEPROM includes connected multiple JTAG chains. SOLUTION: A bus bridge 228 can transmits information between a first serial bus 226 and a target serial bus 222. The bridge 228 operates as a bus slave on the serial bus 226 and as a bus master on the serial bus 222. In a specific embodiment serial bus 226 is a IIC bus and the serial bus 222 is a JTAG bus. A target serial bus 224 may preferably exist further and a selecting device 818 to forward commands to specific target buses exist.