CS4382 Datasheet, PDF (24/42 Pages) Cirrus Logic – 114 dB, 192 kHz 8-Channel D/A Converter

4. PIN DESCRIPTION
DSDA2
DSDB1
DSDA1
VD
GND
MCLK
LRCK1(DSD_EN)
SDIN1
SCLK1
LRCK2
SDIN2
SCLK2
48 47 46 45 44 43 42 41 40 39 38 37
1
36
2
35
3
34
4
33
5
32
6
CS4382
31
7
30
8
29
9
28
10
27
11
26
12
25
13 14 15 16 17 18 19 20 21 22 23 24
AOUTA2-
AOUTA2+
AOUTB2+
AOUTB2-
VA
GND
AOUTA3-
AOUTA3+
AOUTB3+
AOUTB3-
AOUTA4-
AOUTA4+
CS4382
Pin Name
VD
GND
MCLK
LRCK1
LRCK2
SDIN1
SDIN2
SDIN3
SDIN4
SCLK1
SCLK2
VLC
RST
FILT+
VQ
#
Pin Description
4 Digital Power (Input) - Positive power supply for the digital section. Refer to the Recommended Operat-
ing Conditions for appropriate voltages.
5 Ground (Input) - Ground reference. Should be connected to analog ground.
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6 Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters. Table 5 illustrates
several standard audio sample rates and the required master clock frequency.
7 Left Right Clock (Input) - Determines which channel, Left or Right, is currently active on the serial audio
10 data line. The frequency of the left/right clock must be at the audio sample rate, Fs.
8 Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
11
13
14
9 Serial Clock (Input) - Serial clock for the serial audio interface.
12
18 Control Port Power (Input) - Determines the required signal level for the control port. Refer to the Rec-
ommended Operating Conditions for appropriate voltages.
19 Reset (Input) - The device enters a low power mode and all internal registers are reset to their default
settings when low.
20 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.
Requires the capacitive decoupling to analog ground, as shown in the Typical Connection Diagram.
21 Quiescent Voltage (Output) - Filter connection for internal quiescent voltage. VQ must be capacitively
coupled to analog ground, as shown in the Typical Connection Diagram. The nominal voltage level is
specified in the Analog Characteristics and Specifications section. VQ presents an appreciable source
impedance and any current drawn from this pin will alter device performance. However, VQ can be
used to bias the analog circuitry assuming there is no AC signal component and the DC current is less
than the maximum specified in the Analog Characteristics and Specifications section.
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DS514F1