Zynq UltraScale+ Devices Register Reference > Module Summary > IOU_SCNTR Module > current_counter_value_lower_register (IOU_SCNTR) Register

current_counter_value_lower_register (IOU_SCNTR) Register

current_counter_value_lower_register (IOU_SCNTR) Register Description

Register Namecurrent_counter_value_lower_register
Relative Address0x0000000000
Absolute Address 0x00FF250000 (IOU_SCNTR)
Width32
TyperwNormal read/write
Reset Value0x00000000
DescriptionReads or writes the lower 32 bits of the current counter value. The read-only programming interface can read but not write to this register. The control interface must clear the CNTCR.EN bit before writing to this register.

current_counter_value_lower_register (IOU_SCNTR) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
CNTCVL_L_3231:0rwNormal read/write0x0Current value of the timestamp counter, lower 32 bits. To change the current timestamp value, write the lower 32 bits of the new value to this register before writing the upper 32 bits to CNTCVU. The timestamp value is not changed until the CNTCVU register is written to.