Zynq UltraScale+ Devices Register Reference > Module Summary > IOU_SCNTRS Module > current_counter_value_upper_register (IOU_SCNTRS) Register
Register Name | current_counter_value_upper_register |
---|---|
Relative Address | 0x000000000C |
Absolute Address | 0x00FF26000C (IOU_SCNTRS) |
Width | 32 |
Type | rwNormal read/write |
Reset Value | 0x00000000 |
Description | Reads or writes the upper 32 bits of the current counter value. The read-only programming interface can read but not write this register. The control interface must clear the CNTCR.EN bit before writing to this register. |
Field Name | Bits | Type | Reset Value | Description |
---|---|---|---|---|
CNTCVU_U_32 | 31:0 | rwNormal read/write | 0x0 | Current value of the timestamp counter, upper 32 bits. 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. |