Cirrus Logic CS4348 - Manual (Page 4)

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CS4344/5/8
1. PIN DESCRIPTIONS
Pin Name # Pin Description
SDIN 1 Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
DEM/SCLK
2 De-Emphasis/External Serial Clock Input (Input) - used for deemphasis filter control or external serial
clock input.
LRCK
3 Left Right Clock (Input) - Determines which channel, Left or Right, is currently active on the serial audio
data line.
MCLK 4 Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters.
VQ 5 Quiescent Voltage (Output) - Filter connection for internal quiescent voltage.
FILT+
6 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling
circuits.
AOUTL
7 Left Channel Analog Output (Output) - The full scale analog output level is specified in the Analog Char-
acteristics specification table.
GND 8 Ground (Input) - ground reference.
VA 9 Analog Power (Input) - Positive power for the analog and digital sections.
AOUTR
10 Right Channel Analog Output (Output) - The full scale analog output level is specified in the Analog
Characteristics specification table.
SDIN AOUTR
DEM/SCLK VA
LRCK GND
MCLK AOUTL
VQ FILT+
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5 6
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