CS4272 Datasheet, PDF (8/53 Pages) Cirrus Logic – 24-Bit, 192 kHz Stereo Audio CODEC

CS4272
Pin Name
XTO
XTI
MCLK
LRCK
SCLK
SDOUT
(M/S)
SDIN
DGND
VD
VL
M0
M1
I2S/LJ
RST
VCOM
AINA-
AINA+
AINB+
AINB-
VA
AGND
FILT+
AMUTEC
AOUTA-
AOUTA+
AOUTB+
AOUTB-
BMUTEC
# Pin Description
Crystal Connections (Input/Output) - I/O pins for an external crystal which may be used to generate the
1,2 master clock. See “Crystal Applications (XTI/XTO)” on page 24 or “Crystal Applications (XTI/XTO)” on
page 27.
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.
4
Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on the
serial audio data line.
5 Serial Clock (Input/Output) - Serial clock for the serial audio interface.
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.
7 Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
8 Digital Ground (Input) - Ground reference for the internal digital section.
9 Digital Power (Input) - Positive power for the internal digital section.
10 Logic Power (Input) - Positive power for the digital input/output interface.
11
Mode Select 0 (Input) - In conjunction with M1, selects operating mode. Functionality is described in the
Hardware Mode Speed Configuration table.
12
Mode Select 1 (Input) - In conjunction with M0, selects operating mode. Functionality is described in the
Hardware Mode Speed Configuration table.
13 ^{Serial Audio Interface Select (Input) - Selects either the left-justified or I2S format for the Serial Audio}
Interface.
14 Reset (Input) - The device enters a low power mode when this pin is driven low.
15 Common Mode Voltage (Output) - Filter connection for internal common mode voltage.
16,
17, Differential Analog Input (Input) - The full scale differential input signals are presented to the delta-
18, sigma modulators. The full scale level is specified in the ADC Analog Characteristics specification table.
19
20 Analog Power (Input) - Positive power for the internal analog section.
21 Analog Ground (Input) - Ground reference for the internal analog section.
22 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.
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.
24,
25, Differential Analog Audio Output (Output) - The full scale differential output level is specified in the
26, Analog Characteristics specification table.
27
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.
8
DS593F1