CDB42L55 Cirrus Logic Inc, CDB42L55 Datasheet - Page 46

• 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

46
6.7.2
6.7.3
6.7.4
6.8
6.8.1
ADCBMUX1
7
ADC, Line, HP MUX (Address 08h)
Analog Zero Cross
Configures when the signal level changes occur for the analog volume controls.
Note:
timeout period of 1024 sample periods (approximately 10.7 ms at 48 kHz sample rate).
Digital Soft Ramp
Configures an incremental volume ramp from the current level to the new level at the specified rate.
Freeze Registers
Configures a hold on all register settings.
ADC x Input Select
Selects the specified analog input signal into ADCx.
Note:
ANLGZCx
0
1
DIGSFT
0
1
Ramp Rate:
FREEZE
0
1
ADCxMUX[1:0]
00
01
10
11
ADCBMUX0
If the signal does not encounter a zero crossing, the requested volume change will occur after a
Pseudo-differential inputs are not available when the PGA is bypassed.
6
Volume Changes
Do not occur on a zero cross-
ing
Occur on a zero crossing
Volume Changes
Do not occur with a soft ramp
Occur with a soft ramp
1/8 dB every LRCK cycle
Control Port Status
Register changes take effect immediately
Modifications may be made to all control port registers without the changes taking effect until after the
FREEZE is disabled.
Selected Input to ADCx
PGAx - Use PGAxMUX bit
AIN1x; PGA is bypassed
AIN2x; PGA is bypassed
Reserved
ADCAMUX1
5
ADCAMUX0
(“PGA x Input Select” on page
4
Affected Analog Volume Controls
PGAx_VOL[5:0]
HPxMUTE
HPxVOL[6:0]
LINExMUTE
LINExVOL[6:0]
Affected Digital Volume Controls
ADCxMUTE
ADCxATT[7:0]
AMIXxMUTE
AMIXxVOL[6:0]
PMIXxMUTE
PMIXxVOL[6:0]
MSTxMUTE
MSTxVOL[7:0]
(“Headphone Channel x Mute” on page
LINEBMUX
(“ADC Mute” on page
(“Master Playback Mute” on page
(“Line Channel x Mute” on page
(“ADC Mixer Channel x Mute” on page
(“PCM Mixer Channel x Mute” on page
(“Headphone Volume Control” on page
(“ADCx Volume” on page
(“Master Volume Control” on page
(“Line Volume Control” on page
(“ADC Mixer Channel x Volume” on page
(“PCM Mixer Channel x Volume” on page
3
(“PGAx Volume” on page
49) to select an input channel.
LINEAMUX
2
48)
50)
49)
58)
HPBMUX
51)
58)
57)
1
57)
51)
52)
57)
51)
52)
CS42L55
HPAMUX
DS773F1
0