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CP3SP33SMS/NOPB Datasheet(PDF) 127 Page - Texas Instruments |
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CP3SP33SMS/NOPB Datasheet(HTML) 127 Page - Texas Instruments |
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127 / 407 page  DS405 128/125 Sidetone Stereo DAC Section TCLP TCLN TCVRFN TCVRFP TCVBUF2 TCVCM2 DIGMIC1 TCMIC1P TCMIC1N FIFO FIFO ASDM Reconstruction Filter 125 References 128/125 TCRP TCRN Reconstruction Filter FIFO Drivers Dual ADC Section DIGMIC2 TCMIC2P TCMIC2N FIFO ASDM 125 TCVBUF1 TCVCM1 CP3SP33 www.ti.com SNOSCW5 – MAY 2013 • Exact sample rates of 8, 12, 16, 24, and 48 kHz derived from 12-MHz clock • Exact sample rates of 22.05, 24, 32, 44.1, 48, 88.2, 96, 176.4, and 192 kHz from on-chip PLL • 125× oversampling rate mode using 2, 3, 4, 6, or 12 MHz clock • 128× oversampling rate mode • 64× and 32× oversampling rate modes for high-quality 96/192 kHz audio • On-chip fully differential signaling for analog circuitry to ensure high PSRR and low crosstalk • Mute and low-power modes on outputs • Programmable sidetone from ADC • Click and pop reduction and DC protection circuits • Zero-crossing detection for mode changing • Power-management sequencer to protect external components (such as speakers) from power fluctuations • Programmable 5-tap FIR filter for tone control and compensation Figure 20-1. Telematics Codec 20.1 CODEC ADC The ADCs are designed for operation at 8 or 16 kHz and meet all typical specifications at this level. They can be used at sample rates up to 24 kHz by increasing the input clock from 1 MHz up to 3 MHz. The ADCs are 125×-oversampled, second-order, analog sigma-delta modulator (ASDM) designed specifically for audio applications. They use IIR filters to obtain large stopband attenuations. The frequency response matches that used for Bluetooth and GSM at 8 kHz, and it is suitable for G.722 applications at 16 kHz. The ADCs have selectable high-pass filters to support pop/wind rejection at higher sampling rates. The clock should be set as shown in Table 20-1. Copyright © 2013, Texas Instruments Incorporated Telematics Codec 127 Submit Documentation Feedback Product Folder Links :CP3SP33 |
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