CS4270-CZZR Cirrus Logic Inc, CS4270-CZZR Datasheet - Page 6

• Manufacturer Part Number: CS4270-CZZR
• Description: 24-bit, 192kHz Stereo Codec
• Manufacturer: Cirrus Logic Inc

6
1. PIN DESCRIPTIONS - SOFTWARE MODE
SDIN
LRCK
MCLK
SCLK
VD
DGND
SDOUT
VLC
SDA/CDOUT
SCL/CCLK
AD0/CS
AD1/CDIN
AD2
RST
AINA
AINB
VQ
FILT+
VA
AGND
MUTEA
MUTEB
AOUTA
AOUTB
Pin Name
10
12
13
14
15
16
20
21
24
22
23
11
17
18
19
#
1
2
3
4
5
6
7
8
9
Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on the
serial audio data line.
Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters.
Serial Clock (Input/Output) - Serial clock for the serial audio interface.
Digital Power (Input) - Positive power supply for the digital section.
Digital Ground (Input) - Ground reference for the internal digital section.
Serial Audio Data Output (Output) - Output for two’s complement serial audio data.
Control Port Power (Input) - Determines the signal level for the Control Port.
Serial Control Data (Input/Output) - SDA is a data I/O in I²C
the Control Port interface in SPI
Serial Control Port Clock (Input) - Serial clock for the serial Control Port.
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.
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.
Address Bit 2 (I²C) (Input) - AD2 is a chip address pin in I²C Mode.
Reset (Input) - The device enters a low power mode when low.
Analog Input (Input) - The full-scale analog input level is specified in the ADC Analog Characteristics
specification table.
Quiescent Voltage (Output) - Filter connection for internal quiescent voltage.
Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.
Analog Power (Input) - Positive power for the analog sections.
Analog Ground (Input) - Ground reference. Must be connected to analog ground.
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.
Analog Audio Output (Output) - The full-scale output level is specified in the DAC Analog Character-
istics specification table.
SDA/CDOUT
SCL/CCLK
AD1/CDIN
AD0/CS
SDOUT
DGND
MCLK
LRCK
SCLK
SDIN
VLC
VD
1
2
3
4
5
6
7
8
9
10
11
12
®
Mode.
Pin Description
24
23
22
21
20
19
18
17
16
15
14
13
MUTEB
AOUTB
AOUTA
MUTEA
AGND
VA
FILT+
VQ
AINB
AINA
RST
AD2
®
Mode. CDOUT is the output data line for
CS4270
DS686PP1