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ICU01 VHiLC75341M-1: Audio Processor (LC75341M)
Pin No.
Terminal Name
1
DI
2
CE
3
VSS
4
LOUT
5
LBASS
6
LTRE
7
LIN
8
LSEL0
9-12 (11*)
L4-L1
13-16 (14*) R1-R4
17
RSEL0
18
RIN
19
RTRE
20
RBASS
21
ROUT
22
Vref
23
VDD
24
CL
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
24
23
22
21
20
19
18
17
LC75341M
1
2
3
4
5
6
7
8
Serial data and clock input terminal for control.
Chip enable terminal.
When changing from "H" to "L", data is written in the internal latch and each analog switch is turned on.
Data transmission is enabled at "H" level.
Ground terminal.
Bass band filter construction capacitor/resistor connection terminal and bass/treble output terminal.
Bass band filter capacitor and resistor connection terminal.
Treble band filter capacitor connection terminal.
L-CH signal input terminal.
Input selector output terminal.
Input signal terminal.
Input signal terminal.
Input selector output terminal.
R-CH signal input terminal.
Treble band filter capacitor connection terminal.
Bass band filter capacitor and resistor connection terminal.
Bass band filter capacitor/resistor connection terminal and bass/treble output terminal.
0.5 × VDD voltage generation section for analog ground. Connect a capacitor of 10 µF or more between
Vref and AVSS (VSS) as a countermeasure against the power supply ripple.
Power supply terminal.
Serial data and clock input terminal for control.
16
15
14
13
9
10
11
12
9
L4
L3
10
11
L2
12
L1
13
R1
14
R2
R3
15
R4
16
Figure 83 BLOCK DIAGRAM OF IC
Function
8
7
6
CONTROL
CIRCUIT
LOGIC
CIRCUIT
CONTROL
CIRCUIT
17
18
19
– 83 –
SD-CX1W
4
5
LVref
CCB
INTERFACE
RVref
20
21
VSS
3
2
CE
1
DI
CL
24
VDD
23
22
Vref
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