CS5381 Datasheet, PDF (4/24 Pages) Cirrus Logic – 120 dB, 192 kHz, Multi-Bit Audio A/D Converter

1. PIN DESCRIPTIONS
RST 1
M/S 2
LRCK 3
SCLK 4
MCLK 5
VD 6
GND 7
VL 8
SDOUT 9
MDIV 10
HPF 11
I²S/LJ 12
24 FILT+
23 REFGND
22 VQ
21 AINR+
20 AINR-
19 VA
18 GND
17 AINL-
16 AINL+
15 OVFL
14 M1
13 M0
CS5381
Pin Name # Pin Description
RST
1 Reset (Input) - The device enters a low power mode when low.
M/S
LRCK
SCLK
MCLK
VD
GND
VL
SDOUT
MDIV
HPF
2
3
4
5
6
7,18
8
9
10
11
Master/Slave Mode (Input) - Selects operation as either clock master or slave.
Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on the
serial audio data line.
Serial Clock (Input/Output) - Serial clock for the serial audio interface.
Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters.
Digital Power (Input) - Positive power supply for the digital section.
Ground (Input) - Ground reference. Must be connected to analog ground.
Logic Power (Input) - Positive power for the digital input/output.
Serial Audio Data Output (Output) - Output for two’s complement serial audio data.
MCLK Divider (Input) - Enables a master clock divide by two function.
High-Pass Filter Enable (Input) - Enables the Digital High-Pass Filter.
I²S/LJ
M0
M1
12 Serial Audio Interface Format Select (Input) -Selects either the left-justified or I²S format for the SAI.
13,14 Mode Selection (Input) - Determines the operational mode of the device.
OVFL
15 Overflow (Output, open drain) - Detects an overflow condition on both left and right channels.
AINL+
AINL-
VA
AINR-
AINR+
VQ
REF_GND
FILT+
16, 17
Differential Left Channel Analog Input (Input) - Signals are presented differentially to the delta-sigma
modulators via the AINL+/- pins.
19 Analog Power (Input) - Positive power supply for the analog section.
20, 21
Differential Right Channel Analog Input (Input) -Signals are presented differentially to the delta-
sigma modulators via the AINR+/- pins.
22 Quiescent Voltage (Output) - Filter connection for the internal quiescent reference voltage.
23 Reference Ground (Input) - Ground reference for the internal sampling circuits.
24 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.
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DS563F2