SCAN_ENABLE pin ?

expocent · ‎2003-11-27

Posted on November 27, 2003 at 10:22

SCAN_ENABLE pin ?

expocent · ‎2003-08-25

Posted on August 25, 2003 at 11:55

Hello pals,

Did somebody had any experience with pin SCAN_ENABLE on Consumer/Atlas? Data Sheet just says:

''SCAN_ENABLE Reserved. The pin is reserved for Test and Miscellaneous functions.'' wich is so inromative

Not speaking about all JTAG! BSDL is ok (except that chip name is SIP130/140) but no any info about states...

Is there some JTAG relation with SCAN_ENABLE? (aka TRST?) Where this signal must go: GND or +3.3 or +2.5 or ...?

jima · ‎2003-11-20

Posted on November 20, 2003 at 17:00

Did you ever get an answer, I need the same question answered.

stephen239955_st · ‎2003-11-27

Posted on November 27, 2003 at 10:22

The Scan_enable pin has nothing to do with the JTAG Chain. This is a pin that is used for test and manufacturing purposes only. Therefore, if this pin is set to the wrong value, the STPC will not operate correctly.

Therefore, I suggest that you refer to the schematics for the correct value.