CDB53L21 Cirrus Logic Inc, CDB53L21 Datasheet - Page 28

• Manufacturer Part Number: CDB53L21
• Description: BOARD EVAL FOR CS53L21 ADC
• Manufacturer: Cirrus Logic Inc

Specifications of CDB53L21

• Number Of Adc's: 2
• Number Of Bits: 24
• Sampling Rate (per Second): 96k
• Data Interface: Serial
• Inputs Per Adc: 3 Single Ended
• Input Range: ±2.5 V
• Power (typ) @ Conditions: 22.45mW @ 48kSPS, 2.5 V
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -10°C ~ 70°C
• Utilized Ic / Part: CS53L21
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 598-1550

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4.4
4.4.1
4.4.2
Signal Processing Engine
The SPE provides various signal processing functions that apply to the ADC data.
Software
Controls:
Volume Controls
The digital volume control functions offer independent control over the ADC signal path into the mixer.
The volume controls are programmable to ramp in increments of 0.125 dB at a rate controlled by the soft
ramp/zero cross settings.
The signal paths may also be muted via mute control bits. When enabled, each bit attenuates the signal
to its maximum value. When the mute bit is disabled, the signal returns to the attenuation level set in the
respective volume control register. The attenuation is ramped up and down at the rate specified by the
SPE_SZC[1:0] bits.
Mono Channel Mixer
A channel mixer may be used to create a mix of the left and right channels for the ADC data. This mix
allows the user to produce a MONO signal from a stereo source. The mixer may also be used to imple-
ment a left/right channel swap.
Software
Controls:
Software
Controls:
“SPE Control (Address 09h)” on page 48
INPUTS FROM ADCA
“ADCx Mixer Volume Control: ADCA (Address 0Eh) & ADCB (Address 0Fh)” on page 51
“Channel Mixer (Address 18h)” on page
and ADCB
SIGNAL PROCESSING ENGINE (SPE)
ADCMIXA_VOL[6:0]
ADCMIXB_VOL[6:0]
MUTE_ADCMIXA
MUTE_ADCMIXB
Figure 12. Signal Processing Engine
+12dB/-51.5dB
0.5dB steps
VOL
ADCA[1:0]
ADCB[1:0]
Digital Mix to ADC
Serial Interface
51.
Channel
Swap
CS53L21
DS700PP1