Read Sharp SD-NX10 (serv.man10) Service Manual online
SD-NX10H
– 86 –
FUNCTION TABLE OF IC
ICU01 VHiLC75341M-1: Audio Processor (LC75341M)
1
DI
Serial data and clock input terminal for control.
2
CE
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.
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.
3
VSS
Ground terminal.
4
LOUT
Bass band filter construction capacitor/resistor connection terminal and bass/treble output terminal.
5
LBASS
Bass band filter capacitor and resistor connection terminal.
6
LTRE
Treble band filter capacitor connection terminal.
7
LIN
L-CH signal input terminal.
8
LSEL0
Input selector output terminal.
9-12 (11*)
L4-L1
Input signal terminal.
13-16 (14*) R1-R4
Input signal terminal.
17
RSEL0
Input selector output terminal.
18
RIN
R-CH signal input terminal.
19
RTRE
Treble band filter capacitor connection terminal.
20
RBASS
Bass band filter capacitor and resistor connection terminal.
21
ROUT
Bass band filter capacitor/resistor connection terminal and bass/treble output terminal.
22
Vref
0.5
×
VDD voltage generation section for analog ground. Connect a capacitor of 10
µ
F or more between
Vref and AVSS (VSS) as a countermeasure against the power supply ripple.
23
VDD
Power supply terminal.
24
CL
Serial data and clock input terminal for control.
Pin No.
Terminal Name
Function
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Figure 86 BLOCK DIAGRAM OF IC
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
LVref
RVref
CCB
INTERFACE
CONTROL
CIRCUIT
LOGIC
CIRCUIT
CONTROL
CIRCUIT
ROUT
RBASS
RTRE
RIN
RSELO
L1
L2
L3
L4
R1
R2
R3
R4
LOUT
LBASS
LTRE
LIN
LSELO
VSS
CE
DI
CL
VDD
Vref
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
LC75341M
CL
VDD
VREF
ROUT
RBASS
RTRE
RIN
RSELO
R4
R3
R2
R1
DI
CE
VSS
LOUT
LBASS
LTRE
LIN
LSEL0
L4
L3
L2
L1
Click on the first or last page to see other SD-NX10 (serv.man10) service manuals if exist.