CDB42L55 Cirrus Logic Inc, CDB42L55 Datasheet - Page 8

• 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

8
1. PIN DESCRIPTIONS
SDIN
LRCK
SDA
SCL
VCP
FLYP
+VHPFILT
FLYC
FLYN
-VHPFILT
HPOUTA
HPOUTB
HPREF
LINEOUTA
LINEOUTB
LINEREF
Pin Name
10
13
12
14
16
15
11
#
1
2
3
4
5
6
7
8
9
Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on the
serial audio data lines.
Serial Control Data (Input/Output) - Serial data for the I²C serial control port.
Serial Control Port Clock (Input) - Serial clock for the I²C serial control port.
Step-Down Charge Pump Power (Input) - Power supply for the step-down charge pump.
Charge Pump Cap Positive Node (Output) - Positive node for the step-down charge pump’s flying
capacitor.
Step-Down Charge Pump Filter Connection (Output) - Power supply from the step-down charge
pump that provides the positive rail for the headphone and line amplifiers
Charge Pump Cap Common Node (Output) - Common positive node for the step-down and inverting
charge pumps’ flying capacitors.
Charge Pump Cap Negative Node (Output) - Negative node for the inverting charge pump’s flying
capacitor.
Inverting Charge Pump Filter Connection (Output) - Power supply from the inverting charge pump
that provides the negative rail for the headphone and line amplifiers.
Headphone Audio Output (Output) - The full-scale output level is specified in the HP Output Charac-
teristics specification table
Pseudo Diff. Headphone Output Reference (Input) - Ground reference for the headphone amplifiers
Line Audio Output (Output) - The full-scale output level is specified in the Line Output Characteristics
specification table
Pseudo Diff. Line Output Reference (Input) - Ground reference for the line amplifiers.
+VHPFILT
LRCK
FLYC
FLYN
FLYP
SDIN
SDA
VCP
SCL
2
5
1
3
4
6
7
8
9
10
36
Top-Down (Through Package)
35
11
GND/Thermal Pad
34
12
33
13
View
Pin Description
32
14
31
15
30
16
29
17
18
28
27
26
25
24
23
22
21
20
19
AIN1REF
AIN2REF
AIN2A
AFILTA
AIN1A
AIN2B
AFILTB
VQ
FILT+
CS42L55
DS773F1