CDB42518 Cirrus Logic Inc, CDB42518 Datasheet - Page 49

• 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

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