CDB42L55 Cirrus Logic Inc, CDB42L55 Datasheet - Page 49

• 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
6.11
6.11.1 Boostx
6.11.2 PGA x Input Select
6.11.3 PGAx Volume
BOOSTx
7
PGA x MUX, Volume:
PGA A (Address 0Bh) & PGA B (Address 0Ch)
Configures a +20 dB boost on channel x.
Selects the specified analog input signal into PGA channel x.
Note:
(AIN1REF or AIN2REF) for each input selection.
Sets the volume/gain of the Programmable Gain Amplifier (PGA).
Notes:
1. Refer to
BOOSTx
0
1
PGAxMUX
0
1
PGAxVOL[5:0]
01 1111
...
01 1000
...
00 0001
00 0000
11 1111
...
11 0100
...
10 0000
Step Size:
PGAxMUX
For pseudo-differential inputs, the CODEC automatically chooses the respective pseudo-ground
6
Figure 23
+20 dB Boost
No boost applied
+20 dB boost applied
Selected Input to PGAx
AIN1x
AIN2x
Volume
12 dB
...
12 dB
...
+0.5 dB
0 dB
-0.5 dB
...
-6.0 dB
...
-6.0 dB
0.5 dB
PGAxVOL5
and
5
Figure 24 on page 69
PGAxVOL4
4
PGAxVOL3
for differential and integral nonlinearity (DNL and INL).
3
PGAxVOL2
2
PGAxVOL1
1
CS42L55
PGAxVOL0
0
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