CDB4344 Cirrus Logic Inc, CDB4344 Datasheet - Page 16

• Manufacturer Part Number: CDB4344
• Description: BOARD EVAL FOR CS4344 DAC
• Manufacturer: Cirrus Logic Inc
• Series: Popguard®r

Specifications of CDB4344

• Number Of Dac's: 2
• Number Of Bits: 24
• Outputs And Type: 2, Single Ended
• Sampling Rate (per Second): 192k
• Data Interface: Serial
• Dac Type: Voltage
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -10°C ~ 85°C
• Utilized Ic / Part: CS4344
• Description/function: Audio D/A
• Operating Supply Voltage: 5 V
• Product: Audio Modules
• For Use With/related Products: CS4344
• 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: 598-1006

16
When changing clock ratio or sample rate it is recommended that zero data (or near zero data) be present on SDIN
for at least 10 LRCK samples before the change is made. During the clocking change the DAC outputs will always
be in a zero data state. If no zero audio is present at the time of switching, a slight click or pop may be heard as the
DAC output automatically goes to it’s zero data state.
USER: Rem ove
MCLK
MCLK/LRCK ratio
USER: Rem ove
VQ and outputs
USER: change
ram p down
LRCK
Figure 12. CS4344/5/6/8 Initialization and Power-down Sequence
SCLK m ode = internal
Norm al Operation
USER: No SCLK
Analog Output
De-em phasis
is Generated
available
MCLK/LRCK Ratio Detection
VQ and outputs ram p up
USER: Apply Power
USER: Apply MCLK
USER: Apply LRCK
Power-Down State
VQ and outputs low
W ait State
SCLK m ode = external
USER: Applied SCLK
Norm al Operation
Analog Output
De-em phasis
is Generated
not available
VQ and outputs
MCLK/LRCK ratio
USER: Rem ove
USER: change
ram p down
LRCK
USER: Rem ove
CS4344/5/6/8
MCLK
DS613F1