SPRUIV7C May 2022 – November 2025 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP
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| Instance Name | Physical Address |
|---|---|
| WKUP_CTRL_MMR0 | 4301 4000h |
| 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 | CHNG_DDR4_FSP_REQ_REQ | ||||||
| NONE | R/W | ||||||
| 0h | 0h | ||||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RESERVED | CHNG_DDR4_FSP_REQ_REQ_TYPE | ||||||
| NONE | R/W | ||||||
| 0h | 0h | ||||||
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 31:9 | RESERVED | NONE | 0h | Reserved |
| 8 | CHNG_DDR4_FSP_REQ_REQ | R/W | 0h | Initiate FSP frequency change Reset Source: mod_por_rst_n |
| 7:2 | RESERVED | NONE | 0h | Reserved |
| 1:0 | CHNG_DDR4_FSP_REQ_REQ_TYPE | R/W | 0h | Frequency request type Indicates which DDR4 frequency set point to change to Reset Source: mod_por_rst_n |