CS42448 Datasheet, PDF (8/70 Pages) Cirrus Logic – 108 dB, 192 kHz 6-in, 8-out CODEC

DAC_SDIN1
DAC_SDIN2
DAC_SDIN3
DAC_SDIN4
DAC_SCLK
DAC_LRCK
AUX_LRCK
AUX_SCLK
AUX_SDIN
AOUT1 +,-
AOUT2 +,-
AOUT3 +,-
AOUT4 +,-
AOUT5 +,-
AOUT6 +,-
AGND
VQ
VA
AIN1 +,-
AIN2 +,-
AIN3 +,-
AIN4 +,-
AIN5 +,-
AIN6 +,-
AIN5 A,B
AIN6 A,B
MUTEC
FILT+_DAC
FILT+_ADC
INT
SCL/CCLK
SDA/CDOUT
17 DAC Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
16
15
14
18 DAC Serial Clock (Input/Output) - Serial clock for the DAC serial audio interface. Input frequency
must be 256xFs in the TDM digital interface format.
19 DAC Left/Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active
on the DAC serial audio data line. Signals the start of a new TDM frame in the TDM digital inter-
face format.
20 Auxiliary Left/Right Clock (Output) - Determines which channel, Left or Right, is currently active
on the Auxiliary serial audio data line. Derived from the ADC serial port and equals Fs.
21 Auxiliary Serial Clock (Output) - Serial clock for the Auxiliary serial audio interface.
22 Auxiliary Serial Input (Input) - Provides an additional serial input for two’s complement serial
audio data. Used only in the TDM digital interface format.
26,25 Differential Analog Output (Output) - The full-scale analog output level is specified in the Analog
27,28 Characteristics table. Each leg of the differential outputs may also be used single-ended.
30,29
31,32
34,33
36,37
42,56 Analog Ground (Input) -
43 Quiescent Voltage (Output) - Filter connection for internal quiescent reference voltage.
44,53 Analog Power (Input) - Positive power supply for the analog section. See “Digital I/O Pin Charac-
teristics” on page 9.
46,45 Differential Analog Input (Input) - Signals are presented differentially or single-ended to the
48,47 Delta-Sigma modulators. The full-scale input level is specified in the Analog Characteristics speci-
50,49 fication table. See below for a description of AIN5-AIN6 in Single-Ended Mode.
52,51
58,57
60,59
58,57 Single-Ended Analog Input (Input) - When stereo ADC3 is in Single-Ended Mode, an internal
60,59 analog mux allows selection between 2 channels for both analog inputs AIN5 and AIN6 (see sec-
tion 4.2.2 for details). The unused leg of each input is internally connected to common mode. The
full-scale input level is specified in the Analog Characteristics table.
35 Mute Control (Output) - Used as a control for external mute circuits to prevent the clicks and pops
that can occur in any single supply system.
54 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits
of the DAC.
55 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits
of the ADC.
61 Interrupt (Output) - Signals either an ADC overflow condition has occurred in one or more of the
ADC inputs, or a clocking error has occurred in the DAC/ADC as specified in the Interrupt register.
63 Serial Control Port Clock (Input) - Serial clock for the control port interface.
64 Serial Control Data I/O (Input/Output) - Input/Output for I²C data. Output for SPI data.
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DS648PP2