SPRUJC6A December 2024 – July 2025 AM2752-Q1 , AM2754-Q1
Enet Port N IET Control
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| Instance Name | Physical Address |
|---|---|
| CPSW0 | 0802 2040h + formula |
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 |
| RESERVED | |||||||
| NONE | |||||||
| 0h | |||||||
| 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
| MAC_PREMPT | |||||||
| R/W | |||||||
| 0h | |||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| RESERVED | MAC_ADDFRAGSIZE | ||||||
| NONE | R/W | ||||||
| 0h | 0h | ||||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RESERVED | MAC_LINKFAIL | MAC_DISABLEVERIFY | MAC_HOLD | MAC_PENABLE | |||
| NONE | R/W | R/W | R/W | R/W | |||
| 0h | 1h | 0h | 0h | 0h | |||
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 31:24 | RESERVED | NONE | 0h | Reserved |
| 23:16 | MAC_PREMPT | R/W | 0h | Mac Preempt Queue - Indicates which transmit FIFO queues are sent to the preempt MAC. Bit 0 indicates queue zero, bit 1 queue 1 and so on. Packets will be sent to the preempt MAC only when MAC_PENABLE is set, and when MAC_VERIFIED (from CPSW_PN_IET_STATUS_REG_k) or MAC_DISABLEVERIFY is set, and when IET_PORT_EN is set. |
| 15:11 | RESERVED | NONE | 0h | Reserved |
| 10:8 | MAC_ADDFRAGSIZE | R/W | 0h | Mac Fragment Size - An integer in the range 0:7 indicating, as a multiple of 64, the minimum additional length for nonfinal mPackets. 0 64 1 128 2 81 3 256 4 320 5 384 6 448 7 512 |
| 7:4 | RESERVED | NONE | 0h | Reserved |
| 3 | MAC_LINKFAIL | R/W | 1h | Mac Link Fail - Link Fail Indicator to reset the verify state machine. This bit is reset high. Verify and response frames will be sent/allowed when this bit is cleared. |
| 2 | MAC_DISABLEVERIFY | R/W | 0h | Mac Disable Verify - Disables verification on the port when set. If this bit is set then packets will be sent to the preempt Mac when MAC_PENABLE is set (This is a forced mode with no IET verification). |
| 1 | MAC_HOLD | R/W | 0h | Mac Hold - Hold Preemption on the port. |
| 0 | MAC_PENABLE | R/W | 0h | Mac Preemption Enable - Port Preemption Enable. This takes effect only when IET_PORT_EN is set. |