FAQ: What is IDCODE?

Filed under FAQ / JTAG IEEE 1149.1

Q: What is IDCODE?


IDCODE is 32bit number uniquely identifying part type in JTAG chain. Almost all JTAG devices support IDCODE, but there are some exceptions such as Freescale/Motorola PowerPC. JTAGTest is capable of detecting all devices in JTAG chain based on IDCODEs. IDCODE is usually same for different package variants of chip.

Related links

SECONS Ltd. is not in any way connected with integrated circuit manufacturers and there is no any type of authorization, association or affiliation between SECONS and integrated circuit manufacturers. All information present in this FAQ is provided for informational purposes only, on "as-is" basis, and is intended to be useful and informative for SECONS customers.
Copyright (c) SECONS s.r.o. 2008 | Legal info