CS4207-DNZR Cirrus Logic Inc, CS4207-DNZR Datasheet - Page 132

• Manufacturer Part Number: CS4207-DNZR
• Description: Audio CODECs IC Lo Pwr,4/6 HD Aud Codec w/HP Amp
• Manufacturer: Cirrus Logic Inc

Specifications of CS4207-DNZR

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CS4207
ADC1 SZCMode[1:0]: Sets the mode by which
analog PGA and digital volume, and muting
changes will be implemented.
‘00’b - Immediate Change: When immediate
change is selected, all level changes will take
effect immediately in one step
‘01’b - Digital Immediate and Analog Zero Cross:
Dictates that signal level changes, both muting
and gain/attenuation, will occur immediately for
digital volume changes between -13dB and -
51dB and on a signal zero crossing for the Ana-
log PGA volume changes from +12db to -12dB
to minimize audible artifacts. The requested level
change will occur after a timeout period (approx.
???? ms) if the signal does not encounter a zero
crossing. Zero cross is independently monitored
and implemented for each channel.
‘10’b - Digital Soft Ramp and Analog Soft Ramp:
Allows level changes, both muting and
gain/attenuation, to be implemented by incre-
mentally ramping, if the level is between -13dB
and -51dB at a rate of 1/8 dB per audio sample
period using the digital volume control. For set-
tings between +12dB and -12dB, level changes
1:0
Read/Write
10b
are to be implemented by incrementally ramping,
at a rate of 1 dB per 8 audio sample periods
using the analog PGA. If the analog PGA is
being used for +10dB “boost” function or the Dig-
ital Mic is being used, then the digital soft ramp
gain range will be from +12dB to -51dB and ana-
log soft ramp will not be used. Soft ramp is inde-
pendently monitored and implemented for each
channel.
‘11’b - Digital Soft Ramp and Analog Zero Cross:
Allows level changes, both muting and
gain/attenuation, to be implemented by incre-
mentally ramping, if the level is between -13dB
and -51dB at a rate of 1/8 dB per audio sample
period using the digital volume control. For set-
tings between +12dB and -12dB, level changes
are to be implemented on a signal zero crossing
using the Analog PGA. The requested level
change will occur after a timeout period (approx.
???? ms) if the signal does not encounter a zero
crossing. If the analog PGA is being used for
+10dB “boost” function or the Digital Mic is being
used, then the digital soft ramp gain range will be
from +12dB to -51dB and analog soft ramp will
not be used. Soft ramp and zero cross are inde-
pendently monitored and implemented for each
channel.
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DS880F1