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CS4207-CNZ Datasheet, PDF (29/148 Pages) Cirrus Logic – Low-power, 4-in / 6-out HD Audio Codec with Headphone Amp | |||
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CS4207
4.7 Register Settings Across Resets
The CS4207 will perform a complete Power On Reset (POR) initialization if the voltage is cycled from off to
on from the VD pin of the device. All registers will be initialized to the default state. For device behavior due
to other system reset conditions or power state transitions events, see the table below.
Setting
Action with
Link Reset
Action with
Action with
âDoubleâ Function âSingleâ Function
Group reset
Group reset
Action across
D0/D3 state
transitions or link
BITCLK stopped
Unique codec physi-
cal address (SDI)
Requires codec initial-
ization sequence to
acquire new unique
address.
Persist across
âDoubleâ FG reset.
Persist across
âSingleâ FG reset.
Persist across Dx
state transitions or
BITCLK stopped.
Converter Format;
Type, Base, Mult,
Div, Bits Chan fields
(verb ID = A00/2xx)
Persist across Link
Reset.
Settings are reset to
POR default value.
PS-SettingsReset set
to â1âb.
Persist across
âSingleâ FG reset.
Persist across Dx
state transitions or
BITCLK stopped.
Amplifier Gain/Mute
(verb ID = Bxx/3xx)
Index, Mute and Gain
settings persist across
Link Reset.
Settings are reset to
POR default value.
PS-SettingsReset set
to â1âb.
Index, Mute and Gain
settings persist across
âSingleâ FG reset.
Index, Mute and Gain
settings persist across
Dx state transitions or
BITCLK stopped.
Connection Select
Control
(verb ID = F01/701)
Persist across Link
Reset.
Settings are reset to
POR default value.
PS-SettingsReset set
to â1âb.
Persist across
âSingleâ FG reset.
Persist across Dx
state transitions or
BITCLK stopped.
Power States for the
function group and
individual widgets
(verb ID = F05/705)
Power State persist
across Link Reset.
Power State persist
across âDoubleâ FG
reset.
Power State persist
across âSingleâ FG
reset.
Persist across BIT-
CLK stopped. PS-Act
and PS-Set will be
updated to the cur-
rent power state
across Dx state transi-
tions.
Converter Stream &
Channel settings
e.g. Stream number
and lowest Channel
number
(verb ID = F06/706)
Reset to default by
Link reset and does
not set PS-Setting-
sReset to â1âb.
Reset to default by
âDoubleâ FG reset and
does not set PS-Set-
tingsReset to â1âb.
Reset to default by
âSingleâ FG reset and
does not set PS-Set-
tingsReset to â1âb.
Reset to default
across Dx state transi-
tions and does not set
PS-SettingsReset to
â1âb.
Pin Widget Controls;
In/Out Enables, Vref
(verb ID = F07/707)
Persist across Link
Reset.
Settings are reset to
POR default value.
PS-SettingsReset set
to â1âb.
Persist across
âSingleâ FG reset.
Persist across Dx
state transitions or
BITCLK stopped.
Unsolicited
Response control;
Enable and Tag
(verb ID = F08/708)
Persist across Link
Reset.
Settings are reset to
POR default value.
PS-SettingsReset set
to â1âb.
Persist across
âSingleâ FG reset.
Table 1. Register Settings Across Reset Conditions
Persist across Dx
state transitions or
BITCLK stopped.
DS880F4
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