4 de-emphasis control (bit 1), Table 9. de-emphasis control, Figure 20. de-emphasis curve – Cirrus Logic CS4245 User Manual
Page 44: 5 dac master / slave mode (bit 0), 4 adc control - address 04h, 1 adc functional mode (bits 7:6), Table 10. functional mode selection, Figure 20.de-emphasis curve, Please see, Cs4245
44
DS656F3
CS4245
6.3.4
De-Emphasis Control (Bit 1)
Function:
The standard 50/15 s digital de-emphasis filter response,
, may be implemented for a sample
rate of 44.1 kHz when the DeEmph bit is configured as shown in
. NOTE: De-emphasis is available
only in Single-Speed Mode.
6.3.5
DAC Master / Slave Mode (Bit 0)
Function:
This bit selects either master or slave operation for serial audio port 2. Setting this bit will select Master
Mode, while clearing this bit will select Slave Mode.
6.4
ADC Control - Address 04h
6.4.1
ADC Functional Mode (Bits 7:6)
Function:
Selects the required range of output sample rates.
DeEmph
Description
0
Disabled (default)
1
44.1 kHz de-emphasis
Table 9. De-Emphasis Control
7
6
5
4
3
2
1
0
ADC_FM1
ADC_FM0
Reserved
ADC_DIF
Reserved
MuteADC
HPFFreeze
ADC_M/S
ADC_FM1
ADC_FM0
Mode
0
0
Single-Speed Mode: 4 to 50 kHz sample rates
0
1
Double-Speed Mode: 50 to 100 kHz sample rates
1
0
Quad-Speed Mode: 100 to 200 kHz sample rates
1
1
Reserved
Table 10. Functional Mode Selection
Gain
dB
-10dB
0dB
Frequency
T2 = 15 µs
T1=50 µs
F1
F2
3.183 kHz
10.61 kHz
Figure 20. De-Emphasis Curve