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CS4294 датащи(PDF) 23 Page - Cirrus Logic |
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CS4294 датащи(HTML) 23 Page - Cirrus Logic |
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23 / 42 page ![]() CS4294 DS326PP4 23 6.1.11 Extended Audio ID (Index 28h) ID[1:0] Codec configuration ID. Primary is 00; Secondary is 01,10,or 11. This is a reflection of the ID[1:0]# con- figuration pins. The state of the ID# pins are determined at power-up and are the inverse of the ID bits in this register. LDAC PCM LFE DAC. Indicates a LFE DAC is supported. SDAC PCM Surround DAC. Indicates a Surround DAC is supported. CDAC PCM Center DAC. Indicates a Center DAC is supported. VRA Variable Rate Audio. This bit is clear indicating variable sample rates are not supported. Read-only data Mode 0 x000h. Where x is determined by the state of ID[1:0] input pins. Mode 1 x1C0h. 6.1.12 Extended Audio Status/Control (Index 2Ah) CDAC PCM Center DAC Ready. When set, the Center DAC is ready. LDAC PCM LFE DAC Ready. When set, the LFE DAC is ready. SDAC PCM Surround DAC Ready. When set, the Surround DACs are ready. PRI PCM Center DAC Disable. When set, the Center DAC is disabled. PRJ PCM Surround DAC Disable. When set, the Surround DAC is disabled. PRK PCM LFE DAC Disable. When set, the LFE DAC is disabled. Default Mode 0 0000h Mode 1 01C0h CDAC, LDAC, and SDAC are read only bits. 6.1.13 PCM Front DAC Rate (Index 2Ch) SR[15:0] Front DAC Sample Rate. Default Read-only value BB80h, indicating 48 kHz sample rate. 6.1.14 PCM Surround DAC Rate (Index 2Eh) SR[15:0] Surround DAC Sample Rate. Default Read-only value BB80h, indicating 48 kHz sample rate. Mode D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0ID1 ID0 VRA 1 ID1 ID0 LDAC SDAC CDAC VRA Mode D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 000000000 1 0 PRK PRJ PRI 0 0 LDAC SDAC CDAC D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 SR15 SR14 SR13 SR12 SR11 SR10 SR9 SR8 SR7 SR6 SR5 SR4 SR3 SR2 SR1 SR0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 SR15 SR14 SR13 SR12 SR11 SR10 SR9 SR8 SR7 SR6 SR5 SR4 SR3 SR2 SR1 SR0 |
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