Cirrus Logic CS42L56 - Manual

Copyright  Cirrus Logic, Inc. 2014
(All Rights Reserved)
http://www.cirrus.com
FEB '14
DS851F2
Ultralow Power, Stereo Codec with Class H Headphone Amp
DIGITAL to ANALOG FEATURES
 5 mW Stereo Playback Power Consumption
 99 dB Dynamic Range (A-wtd)
 -86 dB THD+N
 Digital Signal Processing Engine
– Bass & Treble Tone Control, De-emphasis
– Master Volume Control (+12 to -102 dB in
0.5 dB steps)
– Soft-ramp & Zero-cross Transitions
– Programmable Peak-detect and Limiter
– Beep Generator with Full Tone Control
Stereo Headphone and Line Amplifiers
 Step-down/Inverting Charge Pump
 Class H Amplifier - Automatic Supply Adj.
– High Efficiency
– Low EMI
 Pseudo-differential Ground-centered Outputs
 High HP Power Output at -75 dB THD+N
– 2 x 20 mW Into 16  @ 1.8 V
 1 V
RMS
Line Output @ 1.8 V
 Analog Vol. Ctl. (+12 to -60 dB in 1 dB steps)
 Analog In to Analog Out Passthrough
 Pop and Click Suppression
ANALOG to DIGITAL FEATURES
 3.5 mW Stereo Record Power Consumption
 95 dB Dynamic Range (A-wtd)
 -87 dB THD+N
 Configurable Analog Inputs
– Two Pseudo-differential Stereo Inputs or
– One Pseudo-differential Stereo Inputs +
One Standard Stereo Input + One Standard
Mono Input or
– Three Standard Stereo Inputs
– Pseudo-differential Inputs Reduce
Common Mode Signal Noise
– 3:1 Stereo Input MUX for ADC or
Passthrough
 Analog Programmable Gain Amplifier (PGA)
– +12 to -6 dB in 0.5 dB steps
– +10 dB or +20 dB Additional Gain for
Microphone Inputs
 Programmable, Low-noise MIC Bias Output
 Programmable Automatic Level Control (ALC)
– Noise Gate for Noise Suppression
– Programmable Threshold &
Attack/Release Rates
 Independent ADC Channel Control
 High-pass Filter Disable for DC Measurements
HPF
+1.62 V to +3.63 V
Interface Supply
Control Port Serial Audio Port
Level Shifter
Multi-bit
 ADC
Beep
Multi-bit
 ADC
ALC
ALC
Multi-bit
 DAC
Mono mix,
Limiter, Bass,
Treble Adjust
Attenuator,
Boost, Mix
Left Line Output
Right Line Output
Pseudo Diff. Input
I²S or Left Justified
Serial Audio Input/
Output
I²C or SPI
Control
Digital Supply (VLDO)
+1.62 V to +2.75 V
Analog Supply (VA)
+1.62 V to +2.75 V
LDO Regulator
Inverting Step-Down
+VHP -VHP
Charge Pump Supply (VCP)
+1.62 V to +2.75 V
Ground-Centered
Amplifiers
Left Headphone Output -
+
Right Headphone Output +
-
+
-
-
+
Programmable Mic Bias Mic Bias Output
Left Input 1
Pseudo Diff. Input /
Left Input 3
Right Input 1
Left Input 2
Pseudo Diff. Input /
Right Input 3
Right Input 2
0, +10, or
+20 dB
-6 to +12 dB
0.5 dB Steps
Pseudo Diff. Input
CS42L56