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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CS48L32 датащи(PDF) 21 Page - Cirrus Logic |
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CS48L32 датащи(HTML) 21 Page - Cirrus Logic |
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21 / 192 page  21 Cirrus Logic DS1219F4 CS48L32 4 Functional Description 4 Functional Description The CS48L32 is a low-power audio hub incorporating a programmable DSP and a multichannel microphone interface. It provides flexible, high-performance audio interfacing for handheld devices in a small and cost-effective package. 4.1 Overview The CS48L32 block diagram is shown in Fig. 4-1. Figure 4-1. CS48L32 Block Diagram The CS48L32 digital-mixing core supports a range of fixed-function and programmable DSP capabilities, ideally suited to low-power voice-trigger applications. Media enhancements such as dynamic range control (DRC) and multiband equalizer (EQ) are supported. The CS48L32 incorporates a Halo Core DSP, supporting the Cirrus Logic SoundClear™ suite of audio processing algorithms. The DSP is integrated within a fully flexible, all-digital mixing and routing engine with sample-rate converters, for wide use-case flexibility. Support for third-party DSP programming provides far-reaching opportunities for product differentiation. The CS48L32 provides multiple digital audio interfaces—I2S and PDM—to provide independent isochronous connections to different processors (e.g., application processor, baseband processor, and wireless transceiver). A flexible clocking arrangement supports a wide variety of external clock references, including clocking derived from the audio serial ports. The frequency-locked loop (FLL) circuit provides additional flexibility for system clocking, including low-power always-on operation. Seamless switching between clock sources is supported; free-running modes are also available. Unused circuitry can be disabled under software control to save power; low leakage currents enable extended standby/off time in portable battery-powered applications. Versatile GPIO functionality is provided, including support for push-button inputs. Comprehensive interrupt functions, with status reporting, are also provided. RESET IRQ ASPn_BCLK Clocking Control SYSCLK GPIO SPI1_SCK SPI1_SS SPI1_MOSI SPI1_MISO Audio Serial Ports ASP1, ASP2 LDO and MICBIAS Generators MICBIAS1A MICBIAS1B MICBIAS1C GND_CP GND_SUB VDD_FLL VDD_CP VREF_FILT VDD_A GND_A VDD_IO GND_D VDD_D Input Select 2 x ADC 2 x Stereo Digital Mic Interface IN1LN_1/IN1_PDMCLK IN1LN_2 IN1LP_1/IN1_PDMDATA IN1LP_2 IN1RN_1/IN2_PDMCLK IN1RN_2 IN1RP_1/IN2_PDMDATA IN1RP_2 Control Interface SPI Reference Generator PDM_CLK Digital Mixing Core Programmable DSP Five-band equalizer (EQ) Dynamic range control (DRC) Low-pass/high-pass filter (LHPF) Isochronous sample -rate conversion Ultrasonic demodulator PWM signal generator CP_FLYN CP_FLYP CP_FILT VOUT_MIC Charge Pump Auxiliary PDM AUXPDM1–2 SPI2_SCK SPI2_SS SPI2_SIO0 SPI2_SIO1 Quad-SPI Master Interface SPI2_SIO2 SPI2_SIO3 CS48L32 |
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