JVC VS-DT2000 Service Manual page 34

VS-DT2000
LC75342M (IC501) : E. volume
1. Terminal layout
DATA 1 30 CLOCK
CE 2 29 VDD
VSS 3 28 VREF
TEST 4 27 NC
ROUT 5 26 LOUT
RBASS2 6 25 LBASS2
RBASS1 7 24 LBASS1
RTRE 8 23 LTRE
RIN 9 22 LIN
RSELO 10 21 LSELO
R4 11 20 L4
R3 12 19 L3
R2 13 18 L2
R1 14 17 L1
NS 15 16 NC
3. Pin function
Pin No. Symbol
1 DATA Serial data and clock input for IC
control
2 CE Chip enable
3 VSS Connect to GND
4 TEST Electric volume connection for test
5 ROUT Volume control and equalizer input
6 RBASS2 Connection for resistor and capacitor
7 RBASS1 that from the bass band filter
8 RTRE Connection for capacitor that from
the treble band filter
9 RIN Volume control and equalizer input
10 RSELO Input selector output
11 R4 Input signal connections
12 R3 Input signal connections
13 R2 Input signal connections, not use
14 R1 Input signal connections
15 NC Not use
16 NC Not use
XC62HR3502P (IC291) : Regulator
1. Terminal layout 2. Block diagram
Vout (NC)
5 4
1 2 3
Vss Vin ON/OFF
ON/OFF
1-34
2. Block diagram
RSELO
10
R4 11
R3 12
R2 13
R1 14
NC 15
NC 16
L1 17
18
L2
L3 19
L4 20
21
LSELO
Function
Vin 2
Current limit
Output
Voltage
3
control reference
RIN RTRE RBASS1 RBASS2
9 8 7 6
LVref
CONTROL
CIRCUIT
LOGIC CCB
CIRCUIT INTERFACE
CONTROL
RVref
CIRCUIT
22 23 24 25
LIN LTRE LBASS1 LBASS2
Pin No. Symbol
17 L1 Input signal connections
18 L2 Input signal connections, not use
19 L3 Input signal connections
20 L4 Input signal connections
21 LSELO Input selector output
22 LIN Volume control and equalizer input
23 LTRE Connection for capacitor that from
the treble band filter
24 LBASS1 Connection for resistor and capacitor
25 LBASS2 that from the bass band filter
26 LOUT Volume control and equalizer input
27 NC Not use
28 VREF Connection to the 0.5X VDD voltage
generator circuit used as the analog
signal ground
29 VDD Power supply
30 CLOCK Serial data and clock input for IC
control
3. Pin function
Pin No.
Symbol
Vout
5
1
2
3 ON/OFF
4
5
1 GND
ROUT
5
4 TEST
3 VSS
2 CE
1 DATA
30 CLOCK
29 VDD
28 VREF
27 NC
26
LOUT
Function
Function
V GND
SS
Power supply input
Vin
ON/OFF control
(NC)
Not use
Vout Regulator output