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CD-ES222H/ES222E
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IC601 VHiLC75341M-1: Audio Processor (LC75341M)
Figure 50 BLOCK DIAGRAM OF IC
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18
17
LVref
RVref
CONTROL
CIRCUIT
CONTROL
CIRCUIT
CONTROL
CIRCUIT
LOUT
LBASS
LIN
LSEL0
L4
L3
L2
L1
R1
R2
R3
R4
RSEL0
RIN
RTRE
LTRE
RBASS
ROUT
VREF
VDD
CLK
DI
CE
VSS
CCB
INTERFACE
CD
Tuner
Tape
Video
IC601 VHiLC75341M-1: Audio Processor (LC75341M)
Terminal Name
Pin No.
Function
1
DI
Serial data and clock input pin
for control.
for control.
2
CE
Chip enable pin.
Data written into an internal latch
in a timing of "H" to "L".
Each analog switch is activated.
Data transfer enabled at "H" level.
Data written into an internal latch
in a timing of "H" to "L".
Each analog switch is activated.
Data transfer enabled at "H" level.
3
VSS
Ground pin.
4
LOUT
Bass band filter comprising
capacitor and resistor connection
pin and bass/treble output pin.
capacitor and resistor connection
pin and bass/treble output pin.
5
LBASS
Bass band filter comprisingcapacitor
and resistor connection pin.
and resistor connection pin.
6
LTRE
Treble band filter comprising
capacitor and resistor connection
pin.
capacitor and resistor connection
pin.
7
LIN
Volume + equaliser output pin
8
LSEL0
Input selector output pin.
9-12
L4-1
Input signal pin.
Terminal Name
Pin No.
Function
13-16
R1-4
Input signal pin.
17
RSEL0
Input selector output pin.
18
RIN
Volume + equaliser output pin
19
RTRE
Treble band filter comprising
capacitor and resistor connection
pin.
capacitor and resistor connection
pin.
20
RBASS
Bass band filter comprisingcapacitor
and resistor connection pin.
and resistor connection pin.
21
ROUT
Bass band filter comprising
capacitor and resistor connection
pin and bass/treble output pin.
capacitor and resistor connection
pin and bass/treble output pin.
22
VREF
0.5x VDD voltage generation block
for analog ground. Capacitor of
several 10
for analog ground. Capacitor of
several 10
µ
F to be connected
between VREF and AWSS (VSS) as
a countermeasure against power
ripple.
a countermeasure against power
ripple.
23
VDD
Supply pin
24
CLK
Serial data and clock input pin
for control.
for control.
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