Sanyo DC-MCR50 - IC501 LC75342 (2 band equalizer)

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IC501 LC75342 (2 band equalizer)
CONTROL
CIRCUIT
LOGIC
CIRCUIT
CCB
INTERFACE
CONTROL
CIRCUIT
15
14
16
17
18
19
20
21 22 24 25 2623
10 9 7 6 58
11
L4
L3
L2
L1
NC
NC
R1
R2
R3
R4
RSELO RIN RTRE RBASS1 RBASS2 ROUT
LSELO LIN LTRE LBASS1 LBASS2 LOUT
TEST
V
SS
CE
DI
CL
V
DD
Vref
NC
12
13
1
2
30
29
28
27
4
3
LVref
RVref
Pin functions
Pi nNumber
Pi nDescription
14
13
12
11
17
18
19
20
L1
L2
L3
L4
R1
R2
R3
R4
Input signal connections
10
21
LSEL0
RSEL0
Input selector outputs
LBASS1
LBA
SS2
RBA
SS1
RBA
SS2
Connections for the resistors and capacitors that form thebass band filters.
9
22
LIN
RIN
Vo lume control and equalizer input
5
26
LOU
T
ROUT
Vo lume and equalizer outputs
8
23
LTRE
RTRE
Connections for the capacitors that form the treble band filters
.
28
Vref
Connection to the 0.5xVDD voltage generator circuit used asthe analog signal ground.
Applications must connect a capacitor ofabout 10 uFbetween this pinand Vss
3
Vss
Ground
29
VDD
Po wer supply
2CE
Chip enable
Data is written to the internal latch when thispin goes from high to low.
The internal analog switches operate atthis point.Data transfer is
enabled when thispin is high.
1
30
DI
CL
Serial data and clock inputs usedfor IC control.
Vss
Electronic volume and tone control testing
Thispin must be tied toVssduring normal operation.
4
15
16
27
NC
Unused.
These pins must be left open or connected toVssduring normal operation.
to exclude power supply ripple
.
7
6
24
25
IC BLOCK DIAGRAM & DESCRIPTION