User guide

36 DS686F1
CS4270
8.5.4 De-Emphasis Control (Bit 0)
Function:
When this bit is set, the standard 50/15 s digital de-emphasis filter is applied on the DAC output. Figure
14 on page 25 shows the filter response. NOTE: De-emphasis is available only in Single-Speed Mode.
When this bit is cleared, no de-emphasis is applied to the DAC outputs.
8.6 Mute Control - Address 06h
8.6.1 Auto-Mute (Bit 5)
Function:
When set, enables the Auto-Mute function. Section 5.2.6 “Auto-Mute” on page 23.
8.6.2 ADC Channel A & B Mute (Bits 4:3)
Function:
When this bit is set, the output of the ADC for the selected channel will be muted.
8.6.3 Mute Polarity (Bit 2)
Function:
The MUTEA
and MUTEB pins (pins 24 and 21) are active low by default. When this bit is set, these pins
are active high.
8.6.4 DAC Channel A & B Mute (Bits 1:0)
Function:
When this bit is set, the output of the DAC for the selected channel will be muted.
8.7 DAC Channel A Volume Control - Address 07h
Function:
See Section 8.8 DAC Channel B Volume Control - Address 08h.
76543210
Reserved Reserved AUTO_MUTE
MUTE_ADC_
CHB
MUTE_ADC_
CHA
MUTE_POL
MUTE_DAC_
CHB
MUTE_DAC_
CHA
76543210
DACA_
VOL7
DACA_
VOL6
DACA_
VOL5
DACA_
VOL4
DACA_
VOL3
DACA_
VOL2
DACA_
VOL1
DACA_
VOL0