SPRUJC6A December 2024 – July 2025 AM2752-Q1 , AM2754-Q1
The PPM register is used by the Audio re-timing code. The DAC over-sampling clock will slow down or speed up by the PPM written to bits [8:0].
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| Instance Name | Physical Address |
|---|---|
| ATL0 | 0FEE 0280h |
| 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 |
| PPM_SD | RESERVED | PPM_SET | |||||
| R/W | NONE | R/W | |||||
| 0h | 0h | 0h | |||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| PPM_SET | |||||||
| R/W | |||||||
| 0h | |||||||
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 31:16 | RESERVED | NONE | 0h | Reserved |
| 15 | PPM_SD | R/W | 0h | 1 = Slow down 0 = Speed up Reset Source: mod_g_rst_n |
| 14:9 | RESERVED | NONE | 0h | Reserved |
| 8:0 | PPM_SET | R/W | 0h | This is the 9-bit parts-per-million value in the adjusting circuit. PPM adjustment = PPMSET/2^20 Reset Source: mod_g_rst_n |