ZHCSV76A June 2022 – March 2024 TMS570LC4357-SEP
PRODUCTION DATA
The ETM clock source can be selected as either VCLK or the external ETMTRACECLKIN terminal. The selection is chosen by the EXTCTLOUT[1:0] control bits of the TPIU (default is '00'). The address of this register is the TPIU base address + 0x404.
Before the user begins accessing TPIU registers, the TPIU should be unlocked through the CoreSight key and 1 or 2 written to this register.
| EXTCTLOUT[1:0] | TPIU/TRACECLKIN |
|---|---|
| 00 | Tied-zero |
| 01 | VCLK |
| 10 | ETMTRACECLKIN |
| 11 | Tied-zero |