Chapter 8. Other; Function Table Of Ic - Sharp HT-X1 Service Manual

HT-X1 E CHAPTER 8. Market HT-X1 Service Manual Audio
OTHER

[1] Function table of IC

IC505 VHiLC75341M-1: Audio Processor (LC75341M)
Pin No. Terminal Name
1 DI Serial data and clock input pin for con-
trol.
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.
3 VSS Ground pin.
4 LOUT Bass band filter comprising
capacitor and resistor connection pin
and bass/treble output pin.
5 LBASS Bass band filter comprising capacitor
and resistor connection pin.
6 LTRE Treble band filter comprising capacitor
and resistor connection pin.
7 LIN Volume + equalizer output pin.
8 LSEL0 Input selector output pin.
9-12 L4-1 Input signal pin.
CD
L4 9
Tuner
L3 10
Tape
L2 11
Video
12
L1
R1
13
R2 14
R3
15
16
R4
Function
8 7 6
CONTROL
CIRCUIT
CONTROL
CIRCUIT
CONTROL
CIRCUIT
17 18 19
Figure 8-1 BLOCK DIAGRAM OF IC
8 – 1
Pin No. Terminal Name
13-16 R1-4 Input signal pin.
17 RSEL0 Input selector output pin.
18 RIN Volume + equalizer output pin
19 RTRE Treble band filter comprising capacitor
and resistor connection pin.
20 RBASS Bass band filter comprising capacitor
and resistor connection pin.
21 ROUT Bass band filter comprising capacitor
and resistor connection pin and bass/
treble output pin.
22 VREF 0.5x VDD voltage generation block
for analog ground. Capacitor of sev-
eral 10µF to be connected between
VREF and AWSS (VSS) as a counter-
measure against power ripple.
23 VDD Supply pin
24 CLK Serial data and clock input pin for con-
trol.
5 4
LVref
CCB
INTERFACE
RVref
20 21
HT-X1
Function
3 VSS
2 CE
1
DI
24 CLK
23 VDD
22 VREF