JVC RS-WP1WT Service Manual page 27

LC75342 (IC501) : E. volume
1. Terminal layout
30 ~
1 ~
2. Block diagram
11
12
13
14
15
16
17
18
19
20
3. Pin function
Pin
Symbol
No.
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 Input signal connections
12 L3 Input signal connections
13 L2 Input signal connections
14 L1 Input signal connections
15 NC Not used
16 NC Not used
16
15
10 9 8
CONTROL
CIRCUIT
LOGIC
CIRCUIT
CONTROL
CIRCUIT
21 22 23
Function
8 7
LVref
CCB
INTERFACE
RVref
24 25
Pin
Symbol
No.
17 R1 Input signal connections
18 R2 Input signal connections
19 R3 Input signal connections
20 R4 Input signal connections
21 RSEL0 Input selector output
22 RIN Volume control and equalizer input
23 RTRE Connection for capacitor that from the treble
band filter
24 RBASS1 Connection for resistor and capacitor that from
25 RBASS2 the bass band filter
26 ROUT Volume control and equalizer input
27 NC Not used
28 Vref Connection to the 0.5X VDD voltage generator
circuit used as the analog signal ground
29 VDD Power supply
30 CL Serial data and clock input for IC control
RS-WP1WT
5
4
3
2
1
30
29
28
27
26
Function
1-27