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STPMIC25APQR Datasheet(PDF) 91 Page - STMicroelectronics |
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STPMIC25APQR Datasheet(HTML) 91 Page - STMicroelectronics |
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91 / 145 page  6.4 Spread spectrum control register (SSMOD_CR) 7 6 5 4 3 2 1 0 SSFM_EN SSFM_CFG SSFM_DEEP[1:0] SSFM_STEP[3:0] R/W R/W R/W R/W R/W R/W R/W R/W • ADDRESS: 0x1F • DEFAULT: 0x00 • DESCRIPTION: spread spectrum frequency modulation control register. • This register is initialized to the default value in the CHECK&LOAD state; writable in the POWER_ON state only. [7] SSFM_EN: Spread-spectrum frequency modulation enabled. 0: inactive 1: active [6] SSFM_CFG: Spread-spectrum frequency modulation waveform shape. 0: triangular 1: sawtooth [5:4] SSFM_DEEP: Spread-spectrum frequency modulation analog parameter configuration. [3:0] SSFM_STEP[3:0]: Spread-spectrum frequency modulation period. Triangular modulation: (SSMOD_STEP+1)*30 µs Sawtooth modulation: (SSMOD_STEP+1)*16 µs STPMIC25 Register descriptions DS14278 - Rev 3 page 91/145 |
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