===== IEEE1588 =====

  * PTP V1
  * PTP V2

https://habr.com/ru/post/163253/

| SFD | Start of Frame Detection |
| SFD | start frame delimiter |


^ IC             ^           ^ Speed ^            ^ IEE1588            ^ Signals           ^  
| BCM54210PE     | Broadcom  | 1G    | PHY        | +                  | SYNC_IN, SYNC_OUT |
| DP83867E/IS/CS | TI        | 1G    | PHY        | +                  | SFD, clock?       |
| DM9119INX      | Davicom   | 1G    | PHY        | ?                  | -                 |
| I219           | Intel     | 1G    | PHY        | ? 1588 conformance | -                 |
| 88E1111        | Marvell   | 1G    | PHY        | ?                  | -                 |
| KSZ9031RNX     | Microchip | 1G    | PHY        | ?                  | -                 |
| KSZ9031MNX     | Microchip | 1G    | PHY        | ?                  | -                 |
| DAP8211R(I)    | DAPU      | 1G    | PHY        | ?                  | -                 |
| I210           | Intel     | 1G    | Controller | +                  | pulse, clocks?    |
| I211           | Intel     | 1G    | Controller | +                  | pulse, clocks?    |
| I350           | Intel     | 1G    | Controller | +                  | ?                 |
| 82574          | Intel     | 1G    | Controller | +                  | ?                 |
| 82575EB        | Intel     | 1G    | Controller | N                  | -                 |
| 82576          | Intel     | 1G    | Controller | +                  | ?                 |
| 82580EB/DB     | Intel     | 1G    | Controller | +                  | ?                 |
| 82599          | Intel     | 1G    | Controller | +                  | ?                 |

| RK3568 | нет упоминаний IEEE 1588 |