Denon AVR-900 Service Manual page 18

fl AVR-3500
18
LC7822 (IC 102)
LC7822 Terminal! Function
Name of Terminal Equivalent internal Circuit Function of Terminal
| Voovss,Ves | [|
LCOM1 ~ LCOM4, Refer to block diagram
BCOM1 ~ BCOM4
a
L1~L8, R1~R8
g
i
NJU9701G
245 | Vcc
23 |__J LPF1 IN
221__} LPF1 OUT
211__} OP1 OUT
20f__] OP1 IN
19]__ J REF
181__}CCi
17[__}cc2
164 J OP2IN
157] OP2 OUT
147 J LPF2IN
13] | LPF2 OUT
LPF1IN LPF1OUT OP1OUT OP1IN CC1
L10 ~ Sa OR!
\20—BaH| TBA O Re
30 || FB Ons
= © RCOM1
' | > IN | | & <a O R4
bo Bil tes Rs
| BHI] tee rors
|
O RCOM2
Level shift
veo ae Epon
Ve ©
—
4
<{
OCL
RES OF >
ai lste
Power terminal.
In/Out terminal of analog switch.
Seria! data input terminal (Schmidt buffer).
CL = Clock input terminal.
DI = Data input terminal.
CE = Chip enable terminal.
Selection terminal for using of two.
Address will be shifted as per below table when switching S terminal to L or H.
Reset terminal.
Condition of analog switch is not fixed at the time of tuming on the power.
When shift this termnal to L, all analog switches become OFF.
CC2 OP2IN OP2 OUT LPF2IN ae OUT
CLOCK
OSCILLATOR DELAY TIME
CONTROL
XIN XOUT REQ SCK DATA IDSW IDFLAG TESTi TEST2 DGND AGND Voo Vcc