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CS4271 Fiches technique(PDF) 8 Page - Cirrus Logic

No de pièce CS4271
Description  24-Bit, 192 kHz Stereo Audio CODEC
Download  53 Pages
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Fabricant  CIRRUS [Cirrus Logic]
Site Internet  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS4271 Fiches technique(HTML) 8 Page - Cirrus Logic

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CS4271
8
DS592F1
Pin Name
#
Pin Description
XTO
XTI
1,2
Crystal Connections (Input/Output) - I/O pins for an external crystal which may be used to generate the
master clock. See “Crystal Applications (XTI/XTO)” on page 24 or “Crystal Applications (XTI/XTO)” on
page 27.
MCLK
3
Master Clock (Input/Output) -Clock source for the delta-sigma modulators. See “Crystal Applications
(XTI/XTO)” on page 24 or “Crystal Applications (XTI/XTO)” on page 27.
LRCK
4
Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on the
serial audio data line.
SCLK
5
Serial Clock (Input/Output) - Serial clock for the serial audio interface.
SDOUT
(M/S)
6
Serial Audio Data Output (Output) - Output for two’s complement serial audio data. This pin must be
pulled-up or pulled-down to select Master or Slave Mode. See “Master/Slave Mode” on page 24.
SDIN
7
Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
DGND
8
Digital Ground (Input) - Ground reference for the internal digital section.
VD
9
Digital Power (Input) - Positive power for the internal digital section.
VL
10
Logic Power (Input) - Positive power for the digital input/output interface.
M0
11
Mode Select 0 (Input) - In conjunction with M1, selects operating mode. Functionality is described in the
Hardware Mode Speed Configuration table.
M1
12
Mode Select 1 (Input) - In conjunction with M0, selects operating mode. Functionality is described in the
Hardware Mode Speed Configuration table.
I2S/LJ
13
Serial Audio Interface Select (Input) - Selects either the left-justified or I2S format for the Serial Audio
Interface.
RST
14
Reset (Input) - The device enters a low power mode when this pin is driven low.
VQ1
15
Quiescent Voltage (Output) - Filter connection for internal quiescent reference voltage.
VQ2
16
Quiescent Voltage (Input) - Connection for internal quiescent reference voltage.
AINA
AINB
17,
18
Analog Input (Input) - The full scale input level is specified in the ADC Analog Characteristics specifica-
tion table.
VQ3
19
Quiescent Voltage (Input) - Connection for internal quiescent reference voltage.
VA
20
Analog Power (Input) - Positive power for the internal analog section.
AGND
21
Analog Ground (Input) - Ground reference for the internal analog section.
FILT+
22
Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.
AMUTEC
23
Channel A Mute Control (Output) - This pin is active during power-up initialization, reset, muting, when
master clock to left/right clock frequency ratio is incorrect, or power-down.
AOUTA-
AOUTA+
AOUTB+
AOUTB-
24,
25,
26,
27
Differential Analog Audio Output (Output) - The full scale differential output level is specified in the
Analog Characteristics specification table.
BMUTEC
28
Channel B Mute Control (Output) - This pin is active during power-up initialization, reset, muting, when
master clock to left/right clock frequency ratio is incorrect, or power-down.


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