4
CS4361
Confidential Draft
9/30/11
1. PIN DESCRIPTIONS
Pin Name
#
Pin Description
SDIN1
SDIN2
SDIN3
2
3
4
Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
DEM/SCLK
5
De-emphasis/External Serial Clock Input (Input) - used for de-emphasis filter control or external serial
clock input.
LRCK
6
Left Right Clock (Input) - Determines which channel, Left or Right, is currently active on the serial
audio data line.
MCLK
7
Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters.
VQ
11
Quiescent Voltage (Output) - Filter connection for internal quiescent voltage.
FILT+
10
Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling
circuits.
AOUT1
AOUT2
AOUT3
AOUT4
AOUT5
AOUT6
19
18
17
16
13
12
Analog Output (Output) - The full scale analog output level is specified in the Analog Characteristics
specification table.
GND
14
Ground (Input) - ground reference.
VA
15
Analog Power (Input) - Positive power for the analog and core digital sections.
VL
1
Interface Power (Input) - Positive power for the digital interface level shifters.
RST
8
Reset (Input) - Applies reset to the internal circuitry when low.
MUTEC
20
Mute Control (Output) - Control signal for optional external muting circuitry.
MODE
9
Mode Control (Input) - Selects operational modes (see Table 2).
1
2
3
4
5
16
6
7
8
15
14
13
12
11
9
10
17
18
19
20
MUTEC
VL
AOUT1
SDIN1
AOUT2
SDIN2
AOUT3
SDIN3
AOUT4
DEM/SCLK
VA
LRCK
GND
MCLK
AOUT5
RST
AOUT6
MODE
VQ
FILT+
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