JVC UX-H33 Manuel D'instructions page 35

4.12 LC75342 (IC302) : E. volume
• Terminal layout
30
1
• Block diagram
11
12
13
14
15
16
17
18
19
20
• Pin function
Pin No. Symbol
1 DI Serial data and clock input for IC control
2 CE Chip enable
3 VSS GND
4 TEST Electric volume connection for test
5 LOUT Volume control and equalizer input
6 LBASS2 Connection for resistor and capacitor that
7 LBASS1 from the bass band filter
8 LTRE Connection for capacitor that from the treble
band filter
9 LIN Volume control and equalizer input
10 LSEL0 Input selector output
11 L4 Not used
12 L3 Input signal connections, not used
13 L2 Input signal connections
14 L1 Input signal connections
15 NC GND
~ 16
~ 15
10 9
CONTROL
CONTROL
21 22
Function
8 8 7
CIRCUIT
LOGIC CCB
CIRCUIT INTERFACE
CIRCUIT
23 24 25
Pin No. Symbol
16 NC
17 R1
18 R2
19 R3
20 R4
21 RSEL0 Input selector output
22 RIN
23 RTRE
24 RBASS1 Connection for resistor and capacitor that
25 RBASS2
26 ROUT Volume control and equalizer input
27 NC
28 VREF
29 VDD
30 CL
5
4
3
LVref
2
1
30
RVref
29
28
27
26
Function
GND
Input signal connections
Input signal connections
Input signal connections, not used
Not used
Volume control and equalizer input
Connection for capacitor that from the treble
band filter
from the bass band filter
Not used
Connection to the 0.5X VDD voltage gener-
ator circuit used as the analog signal ground
Power supply
Serial data and clock input for IC control
UX-H33
(No.22044)1-35