Onkyo TX 820 Service Manual

Page 10

0324

LC7821 (Analog switch)

Serial data composition Switch
( i J Ll Hi (30) fi-Mfl
[2 2 (29 AOA1A2A35w2 3 4 5 6 7H;
( 3 ) R3 ( 28 l 1
( 4 ) L R4 ( 27 )
r 5 )LCOMI acowze) ADDRESS 8 m
(s) L as (25) o a E E B N
(7) L6 as (24) éga E 3% E
(BlLCOM RCOM2(23) 01018 E ,2 g g 758 E
l 9 ) L7 R7 ( 22 )
( I 0) L8 is ( 2 I )
( l l )Lc0M3 RCOMsl 20)
E :69; :00 LEVEL SHIFT The source becomes ON when the bit at
( I 2) V: LATCH on ( l4 ) switch becomes the high level.
(is) m surrwmsrow CL ( i5)
( i7) 5 CE ( l3)
(Q312)
Pin No. Terminal Description Pin No. Terminal Description
1 CD 16 V55 Ground terminal.
3 PHONO i 17 S l Selector terminal.
4 TUNER , , , 18 i RES ! Reset terminal. When power is turned
5 L COM 1 [WW/9" 19mm 010 513ml i l i ON, the condition of the analog switch
6 VDP of right Chanie': . f l l is not determined, but when this ter-
7 1 VCR PLAY Control to the inside analog swnch at l i minaI is L, all analog switches are
8 i L COM 2 the serial data. } OFF.
190 l TAPE 1 PL 19 . VDD Power supply terminal. (+15V)
1 L COM 3 20 l R COM 3
i _ _ 21 . 7
12 \LEE Negative power supply terminal. 22 TAPE I PLAY
(15") 23 l R COM 2 . . .
13 CE (hipenableterminalConnectlo SEL 24 VCR PLAY 1?f/Oufllm Tmmls 011" final
I 2 terminal of micro processor. 25 VDP 0f ls l C An"? ,
r _ . _ 26 R COM 1 Control to the inSide analog swnch at
l 14 Dl Serial data input terminal. Connect to 27 TUNER l the serial data.
t ~ ~ l
Yr DATA terminal of micro processor. 28 PHONO
i 15 CL Serial clock input terminal. Connect to 29 l
i 1 CLOCK terminal of micro processor, 30 l CD
0501

0301, 0401, 0402
NJM4558D-X (Operation amplifier)

Vcc

,1o_

STK4151V (Power amplifier IC)