CS44800
8-Channel Digital Amplifier Controller
Features
> 100 dB Dynamic Range - System Level
< 0.03% THD+N @ 1 W - System Level
32 kHz to 192 kHz Sample Rates
Internal Oscillator Circuit Supports 24.576 MHz
to 54 MHz Crystals
Integrated Sample Rate Converter (SRC)
– Eliminates Clock Jitter Effects
– Input Sample Rate Independent Operation
Power Supply Rejection Realtime Feedback
Spread Spectrum Modulation - Reduces EMI
PWM Popguard
®
for Single-Ended Mode
Eliminates AM Frequency Interference
Programmable Load Compensation Filters
Support for up to 40 kHz Audio Bandwidth
Digital Volume Control with Soft Ramp
– +24 to -127 dB in 0.25 dB Steps
Per Channel Programmable Peak Detect and
Limiter
SPI™ and I²C
®
Host Control Interfaces
Separate 2.5 V to 5.0 V Serial Port and Host
Control Port Supplies
PS_SYNC
XTI
XTO
SYS_CLK
DAI_MCLK
DAI_SCLK
DAI_LRCK
DAI_SDIN1
DAI_SDIN2
DAI_SDIN3
DAI_SDIN4
Volume
/ Limiter
DAI
Serial
Port
SRC
Volume
/ Limiter
Multibit
Σ∆
Modulator
Multibit
Σ∆
Modulator
Auto Fs
Detect
PWM
Clock
Control
XTAL
Power
Supply
Rejection
Volume
/ Limiter
Volume
/ Limiter
Multibit
Σ∆
Modulator
Multibit
Σ∆
Modulator
PWM
Conversion
PWM
Conversion
PWM
Conversion
PWM
Conversion
PSR_RESET
PSR_EN
PSR_MCLK
PSR_SYNC
PSR_DATA
PWMOUTA1+
PWMOUTA1-
PWMOUTB1+
PWMOUTB1-
PWMOUTA2+
PWMOUTA2-
PWMOUTB2+
PWMOUTB2-
PWMOUTA3+
PWMOUTA3-
PWMOUTB3+
PWMOUTB3-
PWMOUTA4+
PWMOUTA4-
PWMOUTB4+
PWMOUTB4-
MUTE
SCL/CCLK
SDA/CDOUT
AD1/CDIN
AD0/CS
RST
INT
SPI/I
2
C Host
Control Port
PWM
Backend
Control/
Status
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
Copyright
©
Cirrus Logic, Inc. 2006
(All Rights Reserved)
MARCH '06
DS632F1
CIRRUS [ CIRRUS LOGIC ]
