CDB42518 Cirrus Logic Inc, CDB42518 Datasheet - Page 49
CDB42518
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
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DS584F1
6.4.5
RECEIVER DE-EMPHASIS CONTROL (RCVR_DEM)
Default = 0
Function:
Receiver Mode Control (address 1Eh) register to set the appropriate sample rate.
When enabled, de-emphasis will be automatically applied when emphasis is detected based on the
channel status bits. The appropriate digital filter will be selected to maintain the standard 15µs/50µs
digital de-emphasis filter response at the auto-detected sample rate of either 32, 44.1, or 48 kHz. If
the FRC_PLL_LK bit is set to a ‘1’b, then the auto-detect sample rate feature is disabled. To apply
the correct de-emphasis filter, use the DE-EMPH bits in the Receiver Mode Control (address 1Eh)
register to set the appropriate sample rate.
RCVR_DEM
DAC_DEM
reg03h[1]
reg03h[0]
0
1
1
0
1
1
FRC_PLL_LK
FRC_PLL_LK
reg06h[0]
reg06h[0]
Table 6. Receiver De-Emphasis
X
0
1
X
0
1
Table 5. DAC De-Emphasis
DE-EMPH[1:0]
DE-EMPH[1:0]
reg1Eh[5:4]
reg1Eh[5:4]
XX
XX
XX
XX
00
01
10
11
00
01
10
11
No De-Emphasis
No De-Emphasis
De-Emphasis
De-Emphasis
Auto-Detect Fs
Auto-Detect Fs
Reserved
Reserved
44.1 kHz
44.1 kHz
32 kHz
48 kHz
32 kHz
48 kHz
Mode
Mode
CS42518
49
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