3-2
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
AIN1A
AIN1B
11
12
Stereo Analog Input 1
(
Input
)
-
The full-scale level is specified in the ADC Analog Characteristics
specification table.
AGND
13
Analog Ground
(
Input
) - Ground reference for the internal analog section.
VA
14
Analog Power
(Input)
-
Positive power for the internal analog section.
AFILTA
15
Antialias Filter Connection
(
Output
)
-
Antialias filter connection for the channel A ADC input.
AFILTB
16
Antialias Filter Connection
(
Output
)
-
Antialias filter connection for the channel B ADC input.
VQ
17
Quiescent Voltage
(
Output
)
-
Filter connection for the internal quiescent reference voltage.
TSTO
18
Test Pin
(
Output
)
-
This pin must be left unconnected.
FILT+
19
Positive Voltage Reference
(
Output
)
-
Positive reference voltage for the internal sampling circuits.
TSTO
20
Test Pin -
This pin must be left unconnected.
AIN4A/MICIN1
AIN4B/MICIN2
21
22
Stereo Analog Input 4 / Microphone Input 1 & 2
(
Input
)
-
The full-scale level is specified in the ADC
Analog Characteristics specification table.
AIN5A
AIN5B
23
24
Stereo Analog Input 5
(
Input
)
-
The full-scale level is specified in the ADC Analog Characteristics
specification table.
MICBIAS
25
Microphone Bias Supply
(
Output
) -
Low-noise bias supply for external microphone. Electrical charac-
teristics are specified in the DC Electrical Characteristics specification table.
AIN6A
AIN6B
26
27
Stereo Analog Input 6
(
Input
)
-
The full-scale level is specified in the ADC Analog Characteristics
specification table.
PGAOUTA
PGAOUTB
28
29
PGA Analog Audio Output
(
Output
) - Either an analog output from the PGA block or high impedance.
See ìPGAOut Source Select (Bit 6)î on page33.
VA
30
Analog Power
(Input)
-
Positive power for the internal analog section.
AGND
31
32
Analog Ground
(
Input
) - Ground reference for the internal analog section.
NC
33
34
No Connect
-
These pins are not connected internally and should be tied to ground to minimize any
potential coupling effects.
TSTO
35
Test Pin
(
Output
)
-
This pin must be left unconnected.
VLS
36
Serial Audio Interface Power
(
Input
) -
Determines the required signal level for the serial audio inter-
face. Refer to the Recommended Operating Conditions for appropriate voltages.
TSTI
37
Test Pin
(
Input
)
-
This pin must be connected to ground.
NC
38,
39,
40
No Connect
-
These pins are not connected internally and should be tied to ground to minimize any
potential coupling effects.
SDOUT
41
Serial Audio Data Output
(
Output
) -
Output for twoís complement serial audio data.
SCLK
42
Serial Clock
(Input/Output
)
-
Serial clock for the serial audio interface.
LRCK
43
Left Right Clock
(Input/Output
) - Determines which channel, Left or Right, is currently active on the
serial audio data line.
MCLK
44
Master Clock
(
Input/Output
) - Clock source for the ADCís delta-sigma modulators.
DGND
45
Digital Ground
(
Input
) - Ground reference for the internal digital section.
VD
46
Digital Power
(
Input
) -
Positive power for the internal digital section.
INT
47
Interrupt
(
Output
) -
Indicates an interrupt condition has occurred.
OVFL
48
Overflow
(
Output
) -
Indicates an ADC overflow condition is present.
