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LC-19A1E-BK/WH
5 – 22
2.11. IC302 (VHiWM8983++-1Y)
2.11.1 Block Diagram
2.11.2 Pin Connections and short description
Pin No.
Pin Name
I/O
Pin Function
1
LIP
I
Left MIC pre-amp positive input
2
LIN
I
Left MIC pre-amp negative input
3
L2/GPIO2
I
Left channel line input/secondary mic pre-amp positive input/GPIO2 pin
4
RIP
I
Right MIC pre-amp positive input
5
RIN
I
Right MIC pre-amp negative input
6
R2/GPIO3
I
Right channel line input/secondary mic pre-amp positive input/GPIO3 pin
7
LRC
I
DAC and ADC sample rate clock
8
BCLK
I
Digital audio bit clock
9
ADCDAT
O
ADC digital audio data output
10
DACDAT
I/O
DAC digital audio data input
11
MCLK
I
Master clock input
12
DGND
-
Digital ground
13
DCVDD
-
Digital core logic supply
14
DBVDD
-
Digital buffer (I/O) supply
15
CSB/GPIO1
I
3-Wire control interface chip Select / GPIO1 pin
16
SCLK
I
3-Wire control interface clock input / 2-wire control interface clock input
17
SDIN
I/O
3-Wire control interface data input / 2-Wire control interface data input
18
MODE
I
Control interface selection
19
AUXL
I
Left auxillary input
20
AUXR
I
Right auxillary input
21
OUT4
O
right line output or mono mix output
22
OUT3
O
mono or left line output
23
ROUT2
O
Headphone or line output right 2
24
AGND2
-
Analogue ground (feeds ROUT2/LOUT2 and OUT3/OUT4)
25
LOUT2
O
Headphone or line output left 2
26
AVDD2
-
Analogue supply (feeds output amplifiers ROUT2/LOUT2 and OUT3/OUT4)
27
VMID
-
Decoupling for ADC and DAC reference voltage
28
AGND1
-
Analogue ground (feeds all input amplifiers, PLL, ADC and DAC, internal bias circuits, output amplifiers
LOUT1, ROUT1)
LOUT1, ROUT1)
29
ROUT1
O
Headphone or line output right 1
30
LOUT1
O
Headphone or line output left 1
31
AVDD1
-
Analogue supply (feeds all input amplifiers, PLL, ADC and DAC, internal bias circuits, output amplifiers
LOUT1, LOUT2)
LOUT1, LOUT2)
32
MICBIAS
O
Microphone bias
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