SPRUIV7C May 2022 – November 2025 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP
The ALE OAM Control allows ports to be put into OAM Loopback, only non-supervisor packet are looped back to the source port.
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| Instance Name | Physical Address |
|---|---|
| CPSW0 | 0800 00BCh |
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 |
| RESERVED | |||||||
| NONE | |||||||
| 0h | |||||||
| 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
| RESERVED | |||||||
| NONE | |||||||
| 0h | |||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| RESERVED | |||||||
| NONE | |||||||
| 0h | |||||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RESERVED | OAM_LB_CTRL | ||||||
| NONE | R/W | ||||||
| 0h | 0h | ||||||
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 31:3 | RESERVED | NONE | 0h | Reserved |
| 2:0 | OAM_LB_CTRL | R/W | 0h | The ~ioam_lb_ctrl allows any port to be put into OAM loopback, that is any packet received will be returned to the same port with an egressop of 0xFF which swaps the source and destination address. BPDUs will still flow through as normal so that OAM can be remotly requested and disabled. |