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CS4270 Arkusz danych(PDF) 6 Page - Cirrus Logic

Numer części CS4270
Szczegółowy opis  24-Bit, 192 kHz Stereo Audio CODEC
Download  48 Pages
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Producent  CIRRUS [Cirrus Logic]
Strona internetowa  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS4270 Arkusz danych(HTML) 6 Page - Cirrus Logic

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DS686A1
CS4270
1. PIN DESCRIPTIONS - SOFTWARE MODE
Pin Name
#
Pin Description
SDIN
1
Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
LRCK
2
Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on the
serial audio data line.
MCLK
3
Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters.
SCLK
4
Serial Clock (Input/Output) - Serial clock for the serial audio interface.
VD
5
Digital Power (Input) - Positive power supply for the digital section.
DGND
6
Digital Ground (Input) - Ground reference for the internal digital section.
SDOUT
7
Serial Audio Data Output (Output) - Output for two’s complement serial audio data.
VLC
8
Control Port Power (Input) - Determines the signal level for the control port.
SDA/CDOUT
9
Serial Control Data (Input/Output) - SDA is a data I/O in I²C mode. CDOUT is the output data line for
the control port interface in SPI mode.
SCL/CCLK
10
Serial Control Port Clock (Input) - Serial clock for the serial control port.
AD0/CS
11
Address Bit 0 (I²C) / Control Port Chip Select (SPI) (Input) - AD0 is a chip address pin in I²C mode.
CS is the chip select signal for SPI format.
AD1/CDIN
12
Address Bit 1 (I²C) / Serial Control Data (Input) - AD1 is a chip address pin in I²C mode. CDIN is the
input data line for the control port interface in SPI mode.
AD2
13
Address Bit 2 (I²C) (Input) - AD2 is a chip address pin in I²C mode.
RST
14
Reset (Input) - The device enters a low power mode when low.
AINA
AINB
15
16
Analog Input (Input) - The full-scale analog input level is specified in the ADC Analog Characteristics
specification table.
VQ
17
Quiescent Voltage (Output) - Filter connection for internal quiescent voltage.
FILT+
18
Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.
VA
19
Analog Power (Input) - Positive power for the analog sections.
AGND
20
Analog Ground (Input) - Ground reference. Must be connected to analog ground.
MUTEA
MUTEB
21
24
Mute Control (Output) - Each pin is active during power-up initialization, reset, muting, when master
clock to left/right clock frequency ratio is incorrect, or power-down.
AOUTA
AOUTB
22
23
Analog Audio Output (Output) - The full-scale output level is specified in the DAC Analog Character-
istics specification table.
1
2
3
4
5
6
7
8
21
22
23
24
9
10
11
12
17
18
19
20
13
14
15
16
SDIN
LRCK
MCLK
SCLK
VD
DGND
SDOUT
VLC
SDA/CDOUT
SCL/CCLK
AD0/CS
AD1/CDIN
MUTEB
AOUTB
AOUTA
MUTEA
AGND
VA
FILT+
VQ
AINB
AINA
RST
AD2


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