SPRS814D March 2012 – October 2019 TMS320C6655 , TMS320C6657
PRODUCTION DATA.
Refer to the PDF data sheet for device specific package drawings
For maximum reliability, the C665x DSP includes an internal pulldown (IPD) on the TRST pin to ensure that TRST will always be asserted upon power up and the internal emulation logic of the DSP will always be properly initialized when this pin is not routed out. JTAG controllers from Texas Instruments actively drive TRST high. However, some third-party JTAG controllers may not drive TRST high but expect the use of an external pullup resistor on TRST. When using this type of JTAG controller, assert TRST to initialize the DSP after power up and externally drive TRST high before attempting any emulation or boundary scan operations.