ZHCSIA0C May 2018 – September 2025 TAS3251
PRODUCTION DATA
当 PLL 启用且 D = 0000 时,必须满足以下条件:
当 PLL 启用且 D ≠ 0000 时,必须满足以下条件:
启用 PLL 时,
示例:MCLK = 12MHz 且 fS = 44.1kHz,(N=2048)
选择 P = 1、R = 1、K = 7.5264,得出 J = 7、D = 5264
示例:MCLK = 12MHz 且 fS = 48kHz,(N=2048)
选择 P = 1、R = 1、K = 8.192,得出 J = 8、D = 1920
值写入 表 7-3 中的寄存器。
| 分频器 | 功能 | 位 |
|---|---|---|
| PLLE | PLL 启用 | P0-R4,[0] |
| PPDV | PLL P | P0-R20,[3:0] |
| PJDV | PLL J | P0-R21,[5:0] |
| PDDV | PLL D | P0-R22,[5:0] |
| P0-R23,[7:0] | ||
| PRDV | PLL R | P0-R24,[3:0] |
| 公式 | 说明 |
|---|---|
| fS (kHz) | 采样频率 |
| RMCLK | 采样频率与 MCLK 频率之比(MCLK 频率= RMCLK x 采样频率) |
| MCLK (MHz) | MCLK 输入端的系统控制器时钟频率(引脚 20) |
| PLL VCO (MHz) | PLL VCO 频率,如 图 7-2 中的 PLLCK |
| P | 方程式 1 中的 PLL 系数之一 |
| PLL REF (MHz) | 由 MCLK / P 产生的内部基准时钟频率 |
| M = K × R | 最后一个 PLL 乘法因子从 K 和 R 计算得出,如 方程式 1 中所述 |
| K = J.D | 方程式 1 中的 PLL 系数之一 |
| R | 方程式 1 中的 PLL 系数之一 |
| PLL fS | fS 与 PLL VCO 频率之比 (PLL VCO / fS) |
| DSP fS | 工作时钟速率与 fS 之比 (PLL fS /NMAC) |
| NMAC | 表 7-2 中的时钟分频器值 |
| DSP CLK (MHz) | 工作频率,如 图 7-2 中的 DSPCK |
| MOD fS | DAC 工作时钟频率与 fS 之比 (PLL fS /NDAC) |
| MOD f (kHz) | DAC 工作频率,如下面的 DACCK: |
| NDAC | 表 7-2 中的 DAC 时钟分频器值 |
| DOSR | 表 7-2 中的 OSR 时钟分频器值,用于在 图 7-2 中生成 OSRCK。必须选择 DOSR,使 MOD fS / DOSR = 16 才能正常运行。 |
| NCP | 表 7-2 中的 NCP(负电荷泵)时钟分频器值 |
| CP f | 负电荷泵时钟频率 (fS × MOD fS / NCP) |
| 误差百分比 | PLL VCO/PLL fS 和 fS 之间的误差百分比(失配误差)。
|
前面的公式说明了如何计算配置 PLL 所需的所有系数和控制。表 7-5 提供了 PLL 作为控制器时钟的推荐时钟分频器设置的便捷参考。
| fS (kHz) | RMCLK | MCLK (MHz) | PLL VCO (MHz) | P | PLL REF (MHz) | M = K×R | K = J×D | R | PLL fS | DSP fS | NMAC | DSP CLK (MHz) | MOD fS | MOD f (kHz) | NDAC | DOSR | 百分比误差 | NCP | CP f (kHz) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | 128 | 1.024 | 98.304 | 1 | 1.024 | 96 | 48 | 2 | 12288 | 1024 | 12 | 8.192 | 768 | 6144 | 16 | 48 | 0 | 4 | 1536 |
| 192 | 1.536 | 98.304 | 1 | 1.536 | 64 | 32 | 2 | 12288 | 1024 | 12 | 8.192 | 768 | 6144 | 16 | 48 | 0 | 4 | 1536 | |
| 256 | 2.048 | 98.304 | 1 | 2.048 | 48 | 48 | 1 | 12288 | 1024 | 12 | 8.192 | 768 | 6144 | 16 | 48 | 0 | 4 | 1536 | |
| 384 | 3.072 | 98.304 | 3 | 1.024 | 96 | 48 | 2 | 12288 | 1024 | 12 | 8.192 | 768 | 6144 | 16 | 48 | 0 | 4 | 1536 | |
| 512 | 4.096 | 98.304 | 3 | 1.365 | 72 | 36 | 2 | 12288 | 1024 | 12 | 8.192 | 768 | 6144 | 16 | 48 | 0 | 4 | 1536 | |
| 768 | 6.144 | 98.304 | 3 | 2.048 | 48 | 48 | 1 | 12288 | 1024 | 12 | 8.192 | 768 | 6144 | 16 | 48 | 0 | 4 | 1536 | |
| 1024 | 8.192 | 98.304 | 3 | 2.731 | 36 | 36 | 1 | 12288 | 1024 | 12 | 8.192 | 768 | 6144 | 16 | 48 | 0 | 4 | 1536 | |
| 1152 | 9.216 | 98.304 | 9 | 1.024 | 96 | 48 | 2 | 12288 | 1024 | 12 | 8.192 | 768 | 6144 | 16 | 48 | 0 | 4 | 1536 | |
| 1536 | 12.288 | 98.304 | 9 | 1.365 | 72 | 36 | 2 | 12288 | 1024 | 12 | 8.192 | 768 | 6144 | 16 | 48 | 0 | 4 | 1536 | |
| 2048 | 16.384 | 98.304 | 9 | 1.82 | 54 | 54 | 1 | 12288 | 1024 | 12 | 8.192 | 768 | 6144 | 16 | 48 | 0 | 4 | 1536 | |
| 3072 | 24.576 | 98.304 | 9 | 2.731 | 36 | 36 | 1 | 12288 | 1024 | 12 | 8.192 | 768 | 6144 | 16 | 48 | 0 | 4 | 1536 | |
| 11.025 | 128 | 1.4112 | 90.3168 | 1 | 1.411 | 64 | 32 | 2 | 8192 | 1024 | 8 | 11.2896 | 512 | 5644.8 | 16 | 32 | 0 | 4 | 1411.2 |
| 192 | 2.1168 | 90.3168 | 3 | 0.706 | 128 | 32 | 4 | 8192 | 1024 | 8 | 11.2896 | 512 | 5644.8 | 16 | 32 | 0 | 4 | 1411.2 | |
| 256 | 2.8224 | 90.3168 | 1 | 2.822 | 32 | 32 | 1 | 8192 | 1024 | 8 | 11.2896 | 512 | 5644.8 | 16 | 32 | 0 | 4 | 1411.2 | |
| 384 | 4.2336 | 90.3168 | 3 | 1.411 | 64 | 32 | 2 | 8192 | 1024 | 8 | 11.2896 | 512 | 5644.8 | 16 | 32 | 0 | 4 | 1411.2 | |
| 512 | 5.6448 | 90.3168 | 3 | 1.882 | 48 | 48 | 1 | 8192 | 1024 | 8 | 11.2896 | 512 | 5644.8 | 16 | 32 | 0 | 4 | 1411.2 | |
| 768 | 8.4672 | 90.3168 | 3 | 2.822 | 32 | 32 | 1 | 8192 | 1024 | 8 | 11.2896 | 512 | 5644.8 | 16 | 32 | 0 | 4 | 1411.2 | |
| 1024 | 11.2896 | 90.3168 | 3 | 3.763 | 24 | 24 | 1 | 8192 | 1024 | 8 | 11.2896 | 512 | 5644.8 | 16 | 32 | 0 | 4 | 1411.2 | |
| 1152 | 12.7008 | 90.3168 | 9 | 1.411 | 64 | 32 | 2 | 8192 | 1024 | 8 | 11.2896 | 512 | 5644.8 | 16 | 32 | 0 | 4 | 1411.2 | |
| 1536 | 16.9344 | 90.3168 | 9 | 1.882 | 48 | 48 | 1 | 8192 | 1024 | 8 | 11.2896 | 512 | 5644.8 | 16 | 32 | 0 | 4 | 1411.2 | |
| 2048 | 22.5792 | 90.3168 | 9 | 2.509 | 36 | 36 | 1 | 8192 | 1024 | 8 | 11.2896 | 512 | 5644.8 | 16 | 32 | 0 | 4 | 1411.2 | |
| 3072 | 33.8688 | 90.3168 | 9 | 3.763 | 24 | 24 | 1 | 8192 | 1024 | 8 | 11.2896 | 512 | 5644.8 | 16 | 32 | 0 | 4 | 1411.2 | |
| 16 | 64 | 1.024 | 98.304 | 1 | 1.024 | 96 | 48 | 2 | 6144 | 1024 | 6 | 16.384 | 384 | 6144 | 16 | 24 | 0 | 4 | 1536 |
| 128 | 2.048 | 98.304 | 1 | 2.048 | 48 | 48 | 1 | 6144 | 1024 | 6 | 16.384 | 384 | 6144 | 16 | 24 | 0 | 4 | 1536 | |
| 192 | 3.072 | 98.304 | 1 | 3.072 | 32 | 32 | 1 | 6144 | 1024 | 6 | 16.384 | 384 | 6144 | 16 | 24 | 0 | 4 | 1536 | |
| 256 | 4.096 | 98.304 | 1 | 4.096 | 24 | 24 | 1 | 6144 | 1024 | 6 | 16.384 | 384 | 6144 | 16 | 24 | 0 | 4 | 1536 | |
| 384 | 6.144 | 98.304 | 3 | 2.048 | 48 | 48 | 1 | 6144 | 1024 | 6 | 16.384 | 384 | 6144 | 16 | 24 | 0 | 4 | 1536 | |
| 512 | 8.192 | 98.304 | 3 | 2.731 | 36 | 36 | 1 | 6144 | 1024 | 6 | 16.384 | 384 | 6144 | 16 | 24 | 0 | 4 | 1536 | |
| 768 | 12.288 | 98.304 | 3 | 4.096 | 24 | 24 | 1 | 6144 | 1024 | 6 | 16.384 | 384 | 6144 | 16 | 24 | 0 | 4 | 1536 | |
| 1024 | 16.384 | 98.304 | 3 | 5.461 | 18 | 18 | 1 | 6144 | 1024 | 6 | 16.384 | 384 | 6144 | 16 | 24 | 0 | 4 | 1536 | |
| 1152 | 18.432 | 98.304 | 3 | 6.144 | 16 | 16 | 1 | 6144 | 1024 | 6 | 16.384 | 384 | 6144 | 16 | 24 | 0 | 4 | 1536 | |
| 1536 | 24.576 | 98.304 | 9 | 2.731 | 36 | 36 | 1 | 6144 | 1024 | 6 | 16.384 | 384 | 6144 | 16 | 24 | 0 | 4 | 1536 | |
| 2048 | 32.768 | 98.304 | 9 | 3.641 | 27 | 27 | 1 | 6144 | 1024 | 6 | 16.384 | 384 | 6144 | 16 | 24 | 0 | 4 | 1536 | |
| 3072 | 49.152 | 98.304 | 9 | 5.461 | 18 | 18 | 1 | 6144 | 1024 | 6 | 16.384 | 384 | 6144 | 16 | 24 | 0 | 4 | 1536 | |
| 22.05 | 64 | 1.4112 | 90.3168 | 1 | 1.411 | 64 | 32 | 2 | 4096 | 1024 | 4 | 22.5792 | 256 | 5644.8 | 16 | 16 | 0 | 4 | 1411.2 |
| 128 | 2.8224 | 90.3168 | 1 | 2.822 | 32 | 32 | 1 | 4096 | 1024 | 4 | 22.5792 | 256 | 5644.8 | 16 | 16 | 0 | 4 | 1411.2 | |
| 192 | 4.2336 | 90.3168 | 3 | 1.411 | 64 | 32 | 2 | 4096 | 1024 | 4 | 22.5792 | 256 | 5644.8 | 16 | 16 | 0 | 4 | 1411.2 | |
| 256 | 5.6448 | 90.3168 | 1 | 5.645 | 16 | 16 | 1 | 4096 | 1024 | 4 | 22.5792 | 256 | 5644.8 | 16 | 16 | 0 | 4 | 1411.2 | |
| 384 | 8.4672 | 90.3168 | 3 | 2.822 | 32 | 32 | 1 | 4096 | 1024 | 4 | 22.5792 | 256 | 5644.8 | 16 | 16 | 0 | 4 | 1411.2 | |
| 512 | 11.2896 | 90.3168 | 3 | 3.763 | 24 | 24 | 1 | 4096 | 1024 | 4 | 22.5792 | 256 | 5644.8 | 16 | 16 | 0 | 4 | 1411.2 | |
| 768 | 16.9344 | 90.3168 | 3 | 5.645 | 16 | 16 | 1 | 4096 | 1024 | 4 | 22.5792 | 256 | 5644.8 | 16 | 16 | 0 | 4 | 1411.2 | |
| 1024 | 22.5792 | 90.3168 | 3 | 7.526 | 12 | 12 | 1 | 4096 | 1024 | 4 | 22.5792 | 256 | 5644.8 | 16 | 16 | 0 | 4 | 1411.2 | |
| 1152 | 25.4016 | 90.3168 | 9 | 2.822 | 32 | 32 | 1 | 4096 | 1024 | 4 | 22.5792 | 256 | 5644.8 | 16 | 16 | 0 | 4 | 1411.2 | |
| 1536 | 33.8688 | 90.3168 | 9 | 3.763 | 24 | 24 | 1 | 4096 | 1024 | 4 | 22.5792 | 256 | 5644.8 | 16 | 16 | 0 | 4 | 1411.2 | |
| 2048 | 45.1584 | 90.3168 | 9 | 5.018 | 18 | 18 | 1 | 4096 | 1024 | 4 | 22.5792 | 256 | 5644.8 | 16 | 16 | 0 | 4 | 1411.2 | |
| 32 | 32 | 1.024 | 98.304 | 1 | 1.024 | 96 | 48 | 2 | 3072 | 1024 | 3 | 32.768 | 192 | 6144 | 16 | 12 | 0 | 4 | 1536 |
| 48 | 1.536 | 98.304 | 1 | 1.536 | 64 | 16 | 4 | 3072 | 1024 | 3 | 32.768 | 192 | 6144 | 16 | 12 | 0 | 4 | 1536 | |
| 64 | 2.048 | 98.304 | 1 | 2.048 | 48 | 24 | 2 | 3072 | 1024 | 3 | 32.768 | 192 | 6144 | 16 | 12 | 0 | 4 | 1536 | |
| 128 | 4.096 | 98.304 | 1 | 4.096 | 24 | 24 | 1 | 3072 | 1024 | 3 | 32.768 | 192 | 6144 | 16 | 12 | 0 | 4 | 1536 | |
| 192 | 6.144 | 98.304 | 3 | 2.048 | 48 | 48 | 1 | 3072 | 1024 | 3 | 32.768 | 192 | 6144 | 16 | 12 | 0 | 4 | 1536 | |
| 256 | 8.192 | 98.304 | 2 | 4.096 | 24 | 24 | 1 | 3072 | 1024 | 3 | 32.768 | 192 | 6144 | 16 | 12 | 0 | 4 | 1536 | |
| 384 | 12.288 | 98.304 | 3 | 4.096 | 24 | 24 | 1 | 3072 | 1024 | 3 | 32.768 | 192 | 6144 | 16 | 12 | 0 | 4 | 1536 | |
| 512 | 16.384 | 98.304 | 3 | 5.461 | 18 | 18 | 1 | 3072 | 1024 | 3 | 32.768 | 192 | 6144 | 16 | 12 | 0 | 4 | 1536 | |
| 768 | 24.576 | 98.304 | 3 | 8.192 | 12 | 12 | 1 | 3072 | 1024 | 3 | 32.768 | 192 | 6144 | 16 | 12 | 0 | 4 | 1536 | |
| 1024 | 32.768 | 98.304 | 3 | 10.923 | 9 | 9 | 1 | 3072 | 1024 | 3 | 32.768 | 192 | 6144 | 16 | 12 | 0 | 4 | 1536 | |
| 1152 | 36.864 | 98.304 | 9 | 4.096 | 24 | 24 | 1 | 3072 | 1024 | 3 | 32.768 | 192 | 6144 | 16 | 12 | 0 | 4 | 1536 | |
| 1536 | 49.152 | 98.304 | 6 | 8.192 | 12 | 12 | 1 | 3072 | 1024 | 3 | 32.768 | 192 | 6144 | 16 | 12 | 0 | 4 | 1536 | |
| 44.1 | 32 | 1.4112 | 90.3168 | 1 | 1.411 | 64 | 32 | 2 | 2048 | 1024 | 2 | 45.1584 | 128 | 5644.8 | 16 | 8 | 0 | 4 | 1411.2 |
| 64 | 2.8224 | 90.3168 | 1 | 2.822 | 32 | 16 | 2 | 2048 | 1024 | 2 | 45.1584 | 128 | 5644.8 | 16 | 8 | 0 | 4 | 1411.2 | |
| 128 | 5.6448 | 90.3168 | 1 | 5.645 | 16 | 16 | 1 | 2048 | 1024 | 2 | 45.1584 | 128 | 5644.8 | 16 | 8 | 0 | 4 | 1411.2 | |
| 192 | 8.4672 | 90.3168 | 3 | 2.822 | 32 | 32 | 1 | 2048 | 1024 | 2 | 45.1584 | 128 | 5644.8 | 16 | 8 | 0 | 4 | 1411.2 | |
| 256 | 11.2896 | 90.3168 | 2 | 5.645 | 16 | 16 | 1 | 2048 | 1024 | 2 | 45.1584 | 128 | 5644.8 | 16 | 8 | 0 | 4 | 1411.2 | |
| 384 | 16.9344 | 90.3168 | 3 | 5.645 | 16 | 16 | 1 | 2048 | 1024 | 2 | 45.1584 | 128 | 5644.8 | 16 | 8 | 0 | 4 | 1411.2 | |
| 512 | 22.5792 | 90.3168 | 3 | 7.526 | 12 | 12 | 1 | 2048 | 1024 | 2 | 45.1584 | 128 | 5644.8 | 16 | 8 | 0 | 4 | 1411.2 | |
| 768 | 33.8688 | 90.3168 | 3 | 11.29 | 8 | 8 | 1 | 2048 | 1024 | 2 | 45.1584 | 128 | 5644.8 | 16 | 8 | 0 | 4 | 1411.2 | |
| 1024 | 45.1584 | 90.3168 | 3 | 15.053 | 6 | 6 | 1 | 2048 | 1024 | 2 | 45.1584 | 128 | 5644.8 | 16 | 8 | 0 | 4 | 1411.2 | |
| 48 | 32 | 1.536 | 98.304 | 1 | 1.536 | 64 | 32 | 2 | 2048 | 1024 | 2 | 49.152 | 128 | 6144 | 16 | 8 | 0 | 4 | 1536 |
| 64 | 3.072 | 98.304 | 1 | 3.072 | 32 | 16 | 2 | 2048 | 1024 | 2 | 49.152 | 128 | 6144 | 16 | 8 | 0 | 4 | 1536 | |
| 128 | 6.144 | 98.304 | 1 | 6.144 | 16 | 16 | 1 | 2048 | 1024 | 2 | 49.152 | 128 | 6144 | 16 | 8 | 0 | 4 | 1536 | |
| 192 | 9.216 | 98.304 | 3 | 3.072 | 32 | 32 | 1 | 2048 | 1024 | 2 | 49.152 | 128 | 6144 | 16 | 8 | 0 | 4 | 1536 | |
| 256 | 12.288 | 98.304 | 2 | 6.144 | 16 | 16 | 1 | 2048 | 1024 | 2 | 49.152 | 128 | 6144 | 16 | 8 | 0 | 4 | 1536 | |
| 384 | 18.432 | 98.304 | 3 | 6.144 | 16 | 16 | 1 | 2048 | 1024 | 2 | 49.152 | 128 | 6144 | 16 | 8 | 0 | 4 | 1536 | |
| 512 | 24.576 | 98.304 | 3 | 8.192 | 12 | 12 | 1 | 2048 | 1024 | 2 | 49.152 | 128 | 6144 | 16 | 8 | 0 | 4 | 1536 | |
| 768 | 36.864 | 98.304 | 3 | 12.288 | 8 | 8 | 1 | 2048 | 1024 | 2 | 49.152 | 128 | 6144 | 16 | 8 | 0 | 4 | 1536 | |
| 1024 | 49.152 | 98.304 | 3 | 16.384 | 6 | 6 | 1 | 2048 | 1024 | 2 | 49.152 | 128 | 6144 | 16 | 8 | 0 | 4 | 1536 | |
| 96 | 32 | 3.072 | 98.304 | 1 | 3.072 | 32 | 16 | 2 | 1024 | 512 | 2 | 49.152 | 64 | 6144 | 16 | 4 | 0 | 4 | 1536 |
| 48 | 4.608 | 98.304 | 3 | 1.536 | 64 | 32 | 2 | 1024 | 512 | 2 | 49.152 | 64 | 6144 | 16 | 4 | 0 | 4 | 1536 | |
| 64 | 6.144 | 98.304 | 1 | 6.144 | 16 | 8 | 2 | 1024 | 512 | 2 | 49.152 | 64 | 6144 | 16 | 4 | 0 | 4 | 1536 | |
| 128 | 12.288 | 98.304 | 2 | 6.144 | 16 | 16 | 1 | 1024 | 512 | 2 | 49.152 | 64 | 6144 | 16 | 4 | 0 | 4 | 1536 | |
| 192 | 18.432 | 98.304 | 3 | 6.144 | 16 | 16 | 1 | 1024 | 512 | 2 | 49.152 | 64 | 6144 | 16 | 4 | 0 | 4 | 1536 | |
| 256 | 24.576 | 98.304 | 4 | 6.144 | 16 | 16 | 1 | 1024 | 512 | 2 | 49.152 | 64 | 6144 | 16 | 4 | 0 | 4 | 1536 | |
| 384 | 36.864 | 98.304 | 6 | 6.144 | 16 | 16 | 1 | 1024 | 512 | 2 | 49.152 | 64 | 6144 | 16 | 4 | 0 | 4 | 1536 | |
| 512 | 49.152 | 98.304 | 8 | 6.144 | 16 | 16 | 1 | 1024 | 512 | 2 | 49.152 | 64 | 6144 | 16 | 4 | 0 | 4 | 1536 |