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CS4237B Datasheet(PDF) 99 Page - Cirrus Logic |
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CS4237B Datasheet(HTML) 99 Page - Cirrus Logic |
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99 / 114 page  DACK<A,B,C> - DMA Acknowledge, Inputs The assertion of these active low signals indicate that the current DMA request is being acknowledged and the part will respond by either latching the data present on the data bus (write) or putting data on the bus (read). The DACK<A,B,C> inputs must be connected to 8-bit DMA channel acknowledge lines only. The defaults on the ISA bus are DACKA = DACK0, DACKB = DACK1, and DACKC = DACK3. The defaults can be changed by modifying the Hardware Resource data. IRQ <A:F>- Host Interrupt Pins, Outputs, 24mA drive These signals are used to notify the host of events which need servicing. They are connected to specific interrupt lines on the ISA bus. The IRQ<A:F> are individually enabled as per configuration data that is generated during a Plug and Play configuration sequence. The defaults on the ISA bus are IRQA = INT5, IRQB = INT7, IRQC = INT9, IRQD = INT11, IRQE = INT12, IRQF = INT15. The defaults can be changed by modifying the Hardware Configuration data loaded from the E 2PROM. Analog Inputs LLINE - Left Line Input Nominally 1 VRMS max analog input for the Left LINE channel, centered around VREF. A programmable gain block provides volume control and is located in either I18 or X0 based on how synthesis is mapped. LLINE is typically used for Left Channel Synthesis (FM or Wavetable). RLINE - Right Line Input Nominally 1 VRMS max analog input for the Right LINE channel, centered around VREF. A programmable gain block provides volume control and is located in either I19 or X1 based on how synthesis is mapped. RLINE is typically used for Right Channel Synthesis (FM or Wavetable). LMIC - Left Mic Input Microphone input for the Left MIC channel, centered around VREF. A programmable gain block provides volume control and is located in X2. In MODE 3, the output mixer has an extra selectable 20 dB of gain controlled by the LMBST bit. RMIC - Right Mic Input Microphone input for the Right MIC channel, centered around VREF. A programmable gain block provides volume control and is located in X3. In MODE 3, the output mixer has an extra selectable 20 dB of gain controlled by the RMBST bit. LAUX1 - Left Auxiliary #1 Input Nominally 1 VRMS max analog input for the Left AUX1 channel, centered around VREF. A programmable gain block provides volume control and is located in I2. Typically used for an external Left line-level input. DS213PP4 CS4237B 99 |
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Similar Description - CS4237B |
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