CDB42438 Cirrus Logic Inc, CDB42438 Datasheet - Page 47

• Manufacturer Part Number: CDB42438
• Description: Eval Bd 108dB 6&8ch Multi-Chnl CODECs
• Manufacturer: Cirrus Logic Inc

Specifications of CDB42438

• Main Purpose: Audio, CODEC
• Embedded: Yes, FPGA / CPLD
• Utilized Ic / Part: CS42438
• Primary Attributes: 6 Single-Ended and 2 Differential Analog Inputs and 8 Outputs, S/PDIF Transmitter and Receiver
• Secondary Attributes: Graphic User Interface
• Description/function: Audio CODECs
• Operating Supply Voltage: 5 V to 12 V
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: CS42438
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant
• Other names: 598-1500

DS646F2
7.7.4
7.8
7.8.1
7.9
7.9.1
AOUT8_MUTE
AOUTx_VOL7
7
7
DAC Channel Mute (Address 07h)
AOUTX Volume Control (Addresses 08h- 0Fh)
Mute ADC Serial Port (MUTE ADC_SP)
Default = 0
0 - Disabled
1 - Enabled
Function:
When enabled, the ADC Serial Port will be muted.
Independent Channel Mute (AOUTX_MUTE)
Default = 0
0 - Disabled
1 - Enabled
Function:
The respective Digital-to-Analog converter outputs of the CS42438 will mute when enabled. The quies-
cent voltage on the outputs will be retained. The muting function is affected by the DAC Soft and Zero
Cross bits (DAC_SZC[1:0]).
Volume Control (AOUTX_VOL[7:0])
Default = 00h
Function:
The AOUTx Volume Control registers allow independent setting of the signal levels in 0.5 dB increments
from 0 dB to -127.5 dB. Volume settings are decoded as shown in
plemented as dictated by the Soft and Zero Cross bits (DAC_SZC[1:0]). All volume settings less than -
127.5 dB are equivalent to enabling the AOUTx_MUTE bit for the given channel.
AOUT7_MUTE
AOUTx_VOL6
6
6
AOUT6_MUTE
AOUTx_VOL5
5
5
Table 8. Example AOUT Volume Settings
Binary Code
00000000
00101000
01010000
10110100
01111000
AOUT5_MUTE
AOUTx_VOL4
4
4
AOUT4_MUTE
AOUTx_VOL3
Volume Setting
3
3
-20 dB
-40 dB
-60 dB
-90 dB
0 dB
AOUT3_MUTE
AOUTx_VOL2
Table
2
2
8. The volume changes are im-
AOUT2_MUTE
AOUTx_VOL1
1
1
CS42438
AOUT1_MUTE
AOUTx_VOL0
0
0
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