Texas Instruments TMS320C6000 - Manual (Page 19)

AD553_freeMcbsp
2-7 AD535 API Module
Description Sets 1 to the FREE field of the SPCR register of the given McBSP port.
When FREE is set to 1, the serial clocks continue to run during an
emulation halt.
Example /* Set the FREE bit of Mcbsp serial port 0 */
AD535_freeMcbsp (MCBSP_DEV0);