gmacgrp_timestamp_addend
This register value is used only when the system time is configured for Fine Update mode (TSCFUPDT bit in Register 448). This register content is added to a 32-bit accumulator in every clock cycle (of clk_ptp_ref_i) and the system time is updated whenever the accumulator overflows.
Module Instance | Base Address | Register Address |
---|---|---|
i_emac_emac0 | 0xFF800000 | 0xFF800718 |
i_emac_emac1 | 0xFF802000 | 0xFF802718 |
i_emac_emac2 | 0xFF804000 | 0xFF804718 |
Size: 32
Offset: 0x718
Access: RW
Important: The value of a reserved bit must be maintained in software. When you modify registers containing reserved bit fields, you must use a read-modify-write operation to preserve state and prevent indeterminate system behavior.
Bit Fields | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
tsar RW 0x0 |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
tsar RW 0x0 |
gmacgrp_timestamp_addend Fields
Bit | Name | Description | Access | Reset |
---|---|---|---|---|
31:0 | tsar |
This field indicates the 32-bit time value to be added to the Accumulator register to achieve time synchronization. |
RW | 0x0 |