CDB42518 Cirrus Logic Inc, CDB42518 Datasheet - Page 58

• Manufacturer Part Number: CDB42518
• Description: BOARD EVAL FOR CS42518 CODEC
• Manufacturer: Cirrus Logic Inc

Specifications of CDB42518

• Main Purpose: Audio, CODEC
• Embedded: Yes, FPGA / CPLD
• Utilized Ic / Part: CS42518/16
• Primary Attributes: 6 Single-Ended Analog Inputs and 8 Outputs, S/PDIF Digital Audio Transmitter and Receiver
• Secondary Attributes: GUI, I2C, SPI Interfaces
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 598-1502

58
6.11.6 SOFT RAMP-DOWN BEFORE FILTER MODE CHANGE (RMP_DN)
6.12
6.12.1 INDEPENDENT CHANNEL MUTE (XX_MUTE)
6.13
6.13.1 VOLUME CONTROL (XX_VOL)
B4_MUTE
xx_VOL7
7
7
Channel Mute (address 0Eh)
Volume Control (addresses 0Fh, 10h, 11h, 12h, 13h, 14h, 15h, 16h)
Note:
Default = 0
0 - Disabled
1 - Enabled
Function:
Default = 0
0 - Disabled
1 - Enabled
Function:
Default = 0
Function:
A mute will be performed prior to executing a filter mode or de-emphasis mode change. When this
feature is enabled, this mute is affected, similar to attenuation changes, by the Soft and Zero Cross
bits (SZC[1:0]). When disabled, an immediate mute is performed prior to executing a filter mode or
de-emphasis mode change.
The digital-to-analog converter outputs of the CS42518 will mute when enabled. The quiescent volt-
age on the outputs will be retained. The muting function is affected, similar to attenuation changes,
by the Soft and Zero Cross bits (SZC[1:0]).
The Digital Volume Control registers allow independent control of the signal levels in 0.5 dB incre-
ments from 0 to -127 dB. Volume settings are decoded as shown in
are implemented as dictated by the Soft and Zero Cross bits (SZC[1:0]). All volume settings less than
-127 dB are equivalent to enabling the MUTE bit for the given channel.
A4_MUTE
xx_VOL6
For best results, it is recommended that this bit be used in conjunction with the RMP_UP bit.
6
6
Binary Code
00000000
00101000
01010000
10110100
01111000
B3_MUTE
xx_VOL5
Table 15. Example Digital Volume Settings
5
5
A3_MUTE
xx_VOL4
Decimal Value
4
4
120
180
40
80
0
B2_MUTE
xx_VOL3
3
3
Volume Setting
A2_MUTE
xx_VOL2
-20 dB
-40 dB
-60 dB
-90 dB
0 dB
2
2
Table
B1_MUTE
xx_VOL1
15. The volume changes
1
1
CS42518
A1_MUTE
xx_VOL0
DS584F1
0
0