CDB42L55 Cirrus Logic Inc, CDB42L55 Datasheet - Page 9

• Manufacturer Part Number: CDB42L55
• Description: Eval Bd Ultra Low Power Stereo Codec
• Manufacturer: Cirrus Logic Inc

Specifications of CDB42L55

• Main Purpose: Audio, CODEC
• Embedded: Yes, FPGA / CPLD
• Utilized Ic / Part: CS42L55
• Primary Attributes: 2 Stereo Analog Inputs, Stereo Line and Headphone Outputs, S/PDIF Transmitter and Receiver
• Secondary Attributes: GUI, USB, RS232, I2C Interfaces, USB or External or Battery Power Supply
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 598-1506; CDB-42L55

DS773F1
1.1
VA
AGND
FILT+
VQ
AFILTA
AFILTB
AIN2A
AIN2B
AIN1A
AIN1B
AIN2REF
AIN1REF
HPDETECT
RESET
VLDO
VDFILT
VL
SDOUT
MCLK
SCLK
GND/
Thermal Pad
Power
Supply
VL
VA
I/O Pin Characteristics
Input and output levels and associated power supply voltage are shown in the table below. Logic levels
should not exceed the corresponding power supply voltage.
HPDETECT
Pin Name
SDOUT
RESET
MCLK
LRCK
SCLK
SDIN
SDA
SCL
17
18
19
20
21
22
23
25
26
28
24
27
29
30
31
32
33
34
35
36
-
Analog Power (Input) - Power supply for the internal analog section.
Analog Ground (Input) - Ground reference for the internal analog section.
Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.
Quiescent Voltage (Output) - Filter connection for the internal quiescent voltage.
Antialias Filter Connection (Output) - Antialias filter connection for the ADC inputs.
Analog Input (Input) - The full-scale level is specified in the Analog Input Characteristics specification
table.
Pseudo Diff. Analog Input Reference (Input) - Ground reference for the programmable gain amplifi-
ers (PGA).
Headphone Detect (Input) - Powers down the left and/or right channel of the line and/or headphone
outputs as described in
Reset (Input) - The device enters a low power mode when this pin is driven low.
Low Dropout Regulator (LDO) Power (Input) - Power supply for the LDO regulator.
Low Dropout Regulator (LDO) Filter Connection (Output) - Power supply from the LDO regulator
that provides the low voltage power to the digital section.
Digital Interface Power (Input) - Determines the required signal level for the serial audio interface
and I²C control port.
Serial Audio Data Output (Output) - Output for two’s complement serial audio data.
Master Clock (Input) - Clock source for the delta-sigma modulators.
Serial Clock (Input/Output) - Serial clock for the serial audio interface.
Ground reference for the internal charge pump and digital section; thermal relief pad. See
mal Pad” on page 68
Input/Output
Input/Output
Input/Output
Output
Input
Input
Input
Input
Input
I/O
Connections
Weak Pull-up
Weak Pull-up
for more information.
(~1 MΩ)
(~1 MΩ)
Internal
“Headphone Power Control” on page 43
-
-
-
-
-
-
-
1.8 V - 3.3 V, CMOS
1.8 V - 3.3 V, CMOS
1.8 V - 3.3 V, CMOS
CMOS/Open Drain
Driver
-
-
-
-
-
and
“Line Power Control” on page
1.8 V - 3.3 V, with Hysteresis
1.8 V - 3.3 V, with Hysteresis
1.8 V - 3.3 V, with Hysteresis
1.8 V - 2.5 V, with Hysteresis
1.8 V - 3.3 V
1.8 V - 3.3 V
1.8 V - 3.3 V
1.8 V - 3.3 V
1.8 V - 3.3 V
Receiver
CS42L55
“QFN Ther-
43.
9