Auxiliary_Timestamp_Nanoseconds
This register, along with Register 461 (Auxiliary Timestamp Seconds Register), gives the 64-bit timestamp stored as auxiliary snapshot. The two registers together form the read port of a 64-bit wide FIFO with a depth of 16. Multiple snapshots can be stored in this FIFO. The ATSNS bits in the Timestamp Status register indicate the fill-level of this FIFO. The top of the FIFO is removed only when the last byte of Register 461 (Auxiliary Timestamp - Seconds Register) is read. In the little-endian mode, this means when Bits[31:24] are read. In big-endian mode, it corresponds to the reading of Bits[7:0] of Register 461 (Auxiliary Timestamp - Seconds Register).
Module Instance | Base Address | Register Address |
---|---|---|
emac0 | 0xFF700000 | 0xFF700730 |
emac1 | 0xFF702000 | 0xFF702730 |
Offset: 0x730
Access: RO
Important: To prevent indeterminate
system behavior, reserved areas of memory must not be accessed by software or
hardware. Any area of the memory map that is not explicitly defined as a register
space or accessible memory is considered reserved.
Bit Fields | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
Reserved |
auxtslo RO 0x0 |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
auxtslo RO 0x0 |
Auxiliary_Timestamp_Nanoseconds Fields
Bit | Name | Description | Access | Reset |
---|---|---|---|---|
30:0 | auxtslo | Contains the lower 32 bits (nano-seconds field) of the auxiliary timestamp. |
RO | 0x0 |