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5-8. KOREAN STEREO PROCESSOR PIN FUNCTION (NK-11 BOARD IC1)
3 7 6 3 1 5 1 5 0
Pin. No.
Pin Name
I/O
1
OUTL
O
Analog output left
2
OUTR
O
Analog output right
3
VDDA1
–
Analog power supply; DAC circuitry
4
VSSA1
–
Analog ground; DAC circuitry
5
VSSD1
–
Digital ground; DAC circuitry
6
VDDD1
–
Digital power supply; DAC circuitry
7
VSSD2
–
Digital ground; DSP part
8
VDDD2
–
Digital power supply; DSP part
9
TP2
I
Additional test pin 2; connected to ground for normal operation
10
NICAM
–
Not used
11
TP1
I
Additional test pin 1; connected to ground for normal operation
12
PCLK
–
Not used
13
ADDR1
–
Not used
14
Vtune
O
Tuning voltage output for crystal oscillator
15
XTALI
I
Crystal oscillator input
16
XTALO
O
Crystal oscillator output
17
TEST2
I
Test pin 2; connected to ground for normal operation
18
Iref
I
Resistor for reference current generation; front end circuitry
19
ADDR2
–
Not used
20
VSSA2
–
Analog ground; analog front end circuitry
21
VDDA2
–
Analog power supply; analog front end circuitry
22
TEST1
I
Test pin 1; connected to ground for normal operation
23
SIF2
I
Sound IF input 2
24
Vref1
I
Reference voltage; analog front end circuitry
25
SIF1
I
Sound IF input 1
T E
L 1 3 9 4 2 2 9 6 5 1 3
26
CRST
Capacitor for power-on reset
27
VSSD3
–
Digital supply; front end circuitry
28
VDDD3
–
Digital supply; front end circuitry
29
SCL
I
Serial communication signal (IIC CLOCK)
30
SDA
I
Serial communication signal (IIC DATA)
31
SDO
–
Not used
32
WS
–
Not used
33
SCK
–
Not used
34
SYSCLK
–
Not used
35
VDDD4
–
Digital power supply; demodulator circuitry
36
VSSD4
–
Digital ground; demodulator circuitry
37
P1
–
Not used
38
MONOIN
–
Not used
39
EXTIR
I
External audio input right channel
40
EXTIL
I
External audio input left channel
41
Vref2
I
Analog reference voltage digital-to-analog converter and operational amplifiers
42
P2
–
Not used
43
VDDA3
–
Analog power supply; operational amplifiers
44
VSSA3
–
Analog ground; operational amplifiers
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