Cirrus Logic CS4245 - Manual

Copyright
 Cirrus Logic, Inc. 2012
(All Rights Reserved)
http://www.cirrus.com
104 dB, 24-Bit, 192 kHz Stereo Audio CODEC
D/A Features
 Multi-bit Delta Sigma Modulator
 104 dB Dynamic Range
 -90 dB THD+N
 Up to 192 kHz Sampling Rates
 Single-Ended Analog Architecture
 Volume Control with Soft Ramp
– 0.5 dB Step Size
– Zero Crossing, Click-Free Transitions
 Popguard
®
Technology
– Minimizes the Effects of Output Transients
 Filtered Line-Level Outputs
 Selectable Serial Audio Interface Formats
– Left-Justified up to 24-bit
– I²S up to 24-bit
– Right-Justified 16-, 18-, 20-, and 24-bit
 Selectable 50/15 µs De-Emphasis
 Control Output for External Muting
A/D Features
 Multi-bit Delta Sigma Modulator
 104 dB Dynamic Range
 -95 dB THD+N

Stereo 6:1 Input Multiplexer
 Programmable Gain Amplifier (PGA)
– ± 12 dB Gain, 0.5 dB Step Size
– Zero Crossing, Click-Free Transitions
 Stereo Microphone Inputs
– +32 dB Gain Stage
– Low-Noise Bias Supply
 Up to 192 kHz Sampling Rates
 Selectable Serial Audio Interface Formats
– Left-Justified up to 24-bit
– I²S up to 24-bit

High-Pass Filter or DC Offset Calibration
1.8 V to 5 V
Multibit
 Modulator
Multibit
 Modulator
Low-Latency
Anti-Alias Filter
Internal Voltage
Reference
Interpolation
Filter
Interpolation
Filter
Left DAC Output
Right DAC Output
Switched Capacitor
DAC and Filter
Multibit
Oversampling
ADC
Multibit
Oversampling
ADC
Low-Latency
Anti-Alias Filter
High Pass
Filter
High Pass
Filter
Stereo Input 1
Serial
Audio
Input
Serial
Audio
Output
3.3 V to 5 V 3.3 V to 5 V
Switched Capacitor
DAC and Filter
MUX
PGA
MUX
Volume
Control
Volume
Control
P
C
M
Se
rial
In
ter
fa
ce
PCM
Serial In
terf
ac
e
Mute
Control
Register Configuration
Le
ve
l
Transl
ator
Leve
l Trans
la
tor
Le
ve
l
Translat
or
Reset
I 2 C/SPI
Control Data
Mute Control
Left Aux Output
Right Aux Output
Stereo Input 2
Stereo Input 3
Stereo Input 4 /
Mic Input 1 & 2
Stereo Input 5
Stereo Input 6
PGA
+32 dB
+32 dB
Interrupt
ADC Overflow
AUG '12
DS656F3
CS4245