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CS42418-DQZ Datenblatt(PDF) 7 Page - Cirrus Logic

Teilenummer CS42418-DQZ
Bauteilbeschribung  110 dB, 192kHz 8-Ch CODEC WITH PLL
Download  67 Pages
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Hersteller  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS42418-DQZ Datenblatt(HTML) 7 Page - Cirrus Logic

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7
CS42418
RST
12
Reset (
Input) - The device enters a low power mode and all internal registers are reset to their default
settings when low.
AINR-
AINR+
13
14
Differential Right Channel Analog Input (
Input) - Signals are presented differentially to the delta-sigma
modulators via the AINR+/- pins.
AINL+
AINL-
15
16
Differential Left Channel Analog Input (
Input) - Signals are presented differentially to the delta-sigma
modulators via the AINL+/- pins.
VQ
17
Quiescent Voltage (
Output) - Filter connection for internal quiescent reference voltage.
FILT+
18
Positive Voltage Reference (
Output) - Positive reference voltage for the internal sampling circuits.
REFGND
19
Reference Ground (
Input) - Ground reference for the internal sampling circuits.
AOUTA1 +,-
AOUTB1 +,-
AOUTA2 +,-
AOUTB2 +,-
AOUTA3 +,-
AOUTB3 +,-
AOUTA4 +,-
AOUTB4 +,-
36,37
35,34
32,33
31,30
28,29
27,26
22,23
21,20
Differential Analog Output (
Output) - The full-scale differential analog output level is specified in the
Analog Characteristics specification table.
VA
24
41
Analog Power (
Input) - Positive power supply for the analog section.
AGND
25
40
Analog Ground (
Input) - Ground reference. Should be connected to analog ground.
MUTEC
38
Mute Control (
Output) - The Mute Control pin outputs high impedance following an initial power-on con-
dition or whenever the PDN bit is set to a ‘1’, forcing the codec into power-down mode. The signal will
remain in a high impedance state as long as the part is in power-down mode. The Mute Control pin goes
to the selected “active” state during reset, muting, or if the master clock to left/right clock frequency ratio
is incorrect. This pin is intended to be used as a control for external mute circuits to prevent the clicks
and pops that can occur in any single supply system. The use of external mute circuits are not manda-
tory but may be desired for designs requiring the absolute minimum in extraneous clicks and pops.
LPFLT
39
PLL Loop Filter (
Output) - An RC network should be connected between this pin and ground.
GPO7
GPO6
GPO5
GPO4
GPO3
GPO2
GPO1
42
43
44
45
46
47
48
General Purpose Output (
Output) - These pins can be configured as general purpose output pins, an
ADC overflow interrupt or Mute Control outputs according to the General Purpose Pin Control registers.
VLS
53
Serial Port Interface Power (
Input) - Determines the required signal level for the serial port interfaces.
RMCK
55
Recovered Master Clock (
Output) - Recovered master clock output from the External Clock Reference
(OMCK, pin 59) or the PLL which is locked to the incoming ADC_LRCK.
ADC_SDOUT
56
ADC Serial Data Output (
Output) - Output for two’s complement serial audio PCM data from the output
of the internal and external ADCs.
ADCIN1
ADCIN2
58
57
External ADC Serial Input (
Input) - The CS42418 provides for up to two external stereo analog to digital
converter inputs to provide a maximum of six channels on one serial data output line when the CS42418
is placed in One Line mode.
OMCK
59
External Reference Clock (
Input) - External clock reference that must be within the ranges specified in
the register “OMCK Frequency (OMCK Freqx)” on page 38.
ADC_LRCK
60
ADC Left/Right Clock (
Input/Output) - Determines which channel, Left or Right, is currently active on
the ADC serial audio data line.
ADC_SCLK
61
ADC Serial Clock
(Input/Output) - Serial clock for the ADC serial audio interface.


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