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Reads or writes the upper 32 bits of the current counter value. The control interface must clear the CNTCR.EN bit or set CNTCR.HDBG and hlt_dbg asserted on the input to stop the counter, before writing to this register.
The CNTCVU register characteristics are:
The following figure shows the bit assignments.
The following table shows the bit assignments.
Table 9-535 CNTCVU register bit assignments
Reads to this register return the upper 32 bits of the current timestamp counter value. To change the current timestamp value, write the lower 32 bits of the new value to CNTCVL before writing the upper 32 bits to this register. The 64-bit timestamp value is updated with the value from both writes when this register is written to.