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Discussion Groups | Analog Devices DSPs | JTAG connection
Technical discussions related to Analog Devices DSPs (including Blackfin, TigerSHARC, SHARC and ADSP-21xx DSPs).
JTAG connection - C R Patil - Mar 9 7:06:00 2000
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HI All!!!!! There are 3 SHARC 21062 processors in a single board, all in the master mode. How the JTAG port of these 3 SHARCs are to be brought out? Can these 3 SHARCs (All in master mode) be connected in DAISY chain mode and hence connected to only one JTAG or 3 JTAGs for 3 SHARCS are required? Any suggestions....... Regards patil |
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Re: JTAG connection - Kenneth Porter - Mar 10 20:34:00 2000
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On Thu, 9 Mar 2000 12:06:33 +0500 (GMT+0500), C R Patil wrote: > There are 3 SHARC 21062 processors in a single board, all in the master > mode. How the JTAG port of these 3 SHARCs are to be brought out? Can these > 3 SHARCs (All in master mode) be connected in DAISY chain mode and hence > connected to only one JTAG or 3 JTAGs for 3 SHARCS are required? Any > suggestions....... You can cable it either way. Daisy-chaining them is probably easier as it requires only one connector and makes debugging somewhat easier. (Only one debugger instance instead of 3.) Note that the JTAG ID of each CPU need not be the same as the CPU ID. The JTAG ID is governed by the order of the daisy chaining. The CPU ID is governed by the ID pins. Kenneth Porter Kensington Laboratories, Inc. mailto: http://www.kensingtonlabs.com |
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