CS42448_07 Datasheet, PDF (7/64 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 +,-
AOUT7 +,-
AOUT8 +,-
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
CS42448
17
16
15
DAC Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
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.
DAC Left/Right Clock (Input/Output) - Determines which channel, Left or Right, is currently
19 active on the DAC serial audio data line. Signals the start of a new TDM frame in the TDM digital
interface 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
27,28
30,29
31,32 Differential Analog Output (Output) - The full-scale analog output level is specified in the Analog
34,33 Characteristics table. Each leg of the differential outputs may also be used single-ended.
36,37
39,38
40,41
42,56 Analog Ground (Input) - Ground reference for the analog section.
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 8.
46,45
48,47
50,49
52,51
58,57
Differential Analog Input (Input) - Signals are presented differentially or single-ended to the
delta-sigma modulators. The full-scale input level is specified in the Analog Characteristics speci-
fication table. See below for a description of AIN5-AIN6 in Single-Ended Mode.
60,59
Single-Ended Analog Input (Input) - When stereo ADC3 is in Single-Ended Mode, an internal
58,57 analog mux allows selection between 2 channels for both analog inputs AIN5 and AIN6 (see Sec-
60,59 tion 4.2.2 on page 25 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 cir-
cuits of the DAC.
55
Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling cir-
cuits 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.
DS648F3
7