gmacgrp_system_time_seconds
The System Time -Seconds register, along with System-TimeNanoseconds register, indicates the current value of the system time maintained by the MAC. Though it is updated on a continuous basis, there is some delay from the actual time because of clock domain transfer latencies (from clk_ptp_ref_i to l3_sp_clk).
| Module Instance | Base Address | Register Address |
|---|---|---|
| i_emac_emac0 | 0xFF800000 | 0xFF800708 |
| i_emac_emac1 | 0xFF802000 | 0xFF802708 |
| i_emac_emac2 | 0xFF804000 | 0xFF804708 |
Size: 32
Offset: 0x708
Access: RO
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 |
|
tss RO 0x0 |
|||||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|
tss RO 0x0 |
|||||||||||||||
gmacgrp_system_time_seconds Fields
| Bit | Name | Description | Access | Reset |
|---|---|---|---|---|
| 31:0 | tss |
The value in this field indicates the current value in seconds of the System Time maintained by the MAC. |
RO | 0x0 |