Cirrus Logic CS4361 - Manual (Page 4)

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+