CS4294 Datasheet, PDF (23/42 Pages) Cirrus Logic – SoundFusion Audio/Docking Codec 97 (AMC 97)

CS4294
6.1.11 Extended Audio ID (Index 28h)
Mode D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
0 ID1 ID0
VRA
1 ID1 ID0
LDAC SDAC CDAC
VRA
ID[1:0]
LDAC
SDAC
CDAC
VRA
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.
PCM LFE DAC. Indicates a LFE DAC is supported.
PCM Surround DAC. Indicates a Surround DAC is supported.
PCM Center DAC. Indicates a Center DAC is supported.
Variable Rate Audio. This bit is clear indicating variable sample rates are not supported.
Read-only data
Mode 0
Mode 1
x000h. Where x is determined by the state of ID[1:0] input pins.
x1C0h.
6.1.12 Extended Audio Status/Control (Index 2Ah)
Mode D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
0
0
0
0
0
0
0
0
0
0
1
0
PRK PRJ PRI
0
0
LDAC SDAC CDAC
CDAC
LDAC
SDAC
PRI
PRJ
PRK
Default
PCM Center DAC Ready. When set, the Center DAC is ready.
PCM LFE DAC Ready. When set, the LFE DAC is ready.
PCM Surround DAC Ready. When set, the Surround DACs are ready.
PCM Center DAC Disable. When set, the Center DAC is disabled.
PCM Surround DAC Disable. When set, the Surround DAC is disabled.
PCM LFE DAC Disable. When set, the LFE DAC is disabled.
Mode 0 0000h
Mode 1 01C0h
CDAC, LDAC, and SDAC are read only bits.
6.1.13 PCM Front DAC Rate (Index 2Ch)
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
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)
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
SR[15:0] Surround DAC Sample Rate.
Default Read-only value BB80h, indicating 48 kHz sample rate.
DS326PP4
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