Part Number: TMS320F280049
Tool/software: Code Composer Studio
Dear Champs,
I am asking this for our customer.
The doc of XDS110 JTAG probe
says that the TGTSUPPLYOUT and GND pins on the AUX connector can be used to supply power for the target with enabling power on CCS configuration.
Because the user just needs a 3.3V/GND to program F280049 flash, the user just uses 3.3V (Pin 27/29 on the 30-pin Expansion Header) and GND (Pin 25/26) from the probe to supply power for the target.
The reason are:
1) The pin pitch on the header of the probe is bigger and is easier to use with.
2) No need to enable "probe-powered" on the CCS target configuration of XDS110. Just keep it by default setting.
In our testing, it works.
Therefore,
our questions:
1) Is there any concern using the 3.3V/GND on Expansion Header rather than TGTSUPPLYOUT and GND pins on the AUX connector for programming C2000 device flash?
2)
From the description of Sec 2.5 Probe Expansion Header "The expansion port also has interfaces for accepting a power input supplied by the target system, and a path to send power back to the target system through the XDS110 probe AUX connector. The primary use case for these features is for energy trace monitoring, but it can be used for other functions.",
it seems the 3.3V pin are shorted with TGTSUPPLYOUT, but TGTSUPPLYOUT is with TMC4129 ADC for energy trace monitoring. Is my understanding correct?
3) Are these 3.3V/GND also of ~400mA as 3.1.1 Target-Supplied Power says?
Wayne Huang
