Ic Data - Yamaha NX-A01 Service Manual

I IC DATA
IC301: LC75348M (MAIN (1) P.C.B.)
Analog IC
No. Pin name
1 DI
2 CE
3 VSS
4 TEST
5 LOUT
6 LBASS2
7 LBASS1
8 LTRE
9 LIN
10 LSEL0
11 L4
12 L3
13 L2
14 L1
15 NC
16 NC
17 R1
18 R2
19 R3
20 R4
21 RSEL0
22 RIN
23 RTRE
24 RBASS1
25 RBASS2
26 ROUT
27 TIM
28 Vref
29 VDD
30 CL
4 3
5
LOUT
LBASS2
6
7
LBASS1
8
LTRE
9
LIN
10
LSELO
11 12 13 14
Serial data and clock input terminal for control.
Chip enable terminal. / Data is written in the inside latch when [H] changes to [L] and each analog switch
operates. / Data transfer is enabled at [H] level.
Ground terminal.
Test terminal of electronic volume. / Set to VSS potential.
Volume + equalizer output terminal.
Connection terminal for capacitor and resistor constructing bus band filter.
Connection terminal for capacitor and resistor constructing bus band filter.
Connection terminal for capacitor constructing treble band filter.
Volume + equalizer input terminal.
Input selector output terminal.
Input signal terminal.
Input signal terminal.
Input signal terminal.
Input signal terminal.
Set no connect terminal/open or connect to VSS.
Set no connect terminal/open or connect to VSS.
Input signal terminal.
Input signal terminal.
Input signal terminal.
Input signal terminal.
Input selector output terminal.
Volume + equalizer input terminal.
Connection terminal for capacitor constructing treble band filter.
Connection terminal for capacitor and resistor constructing bus band filter.
Connection terminal for capacitor and resistor constructing bus band filter.
Volume + equalizer output terminal.
When there is no zero cross signal until the timer is completed even after setting the timer terminal/data
when there is no signal of the zero cross circuit, the data is forced to be set.
Connect a capacitor of about some 10uF between Vref to VSS (VSS) as a measure against power ripple
where 1/2 VDD voltage for analog ground occurs.
Power voltage terminal.
Serial data and clock input terminal for control.
2 1 30 29 28 27
26
ROUT
RBASS2
25
24
RBASS1
23
RTRE
22
RIN
21
RSELO
15 16 17 18 19 20
Description
NX-A01
7