Bu4094Bcf (Co: Ic304,305); Lc75721E (Co: Ic101); Tc9274N-011 (Au: Ic107); Lc75721E Terminal Function - Denon AVR-2802 Service Manual

BU4094BCF (CO: IC304,305)

STROBE VDD
1 16
DATA 2 15 OE
CLOCK 3 14 Q5
Q1 4 Q6
13
Q2 Q7
5 12
Q3 Q8
6 11
Q4 Q'
7 10
S
Q
V 8
9
SS S

LC75721E (CO: IC101)

48
49
DI
CL
CE
RES
V
DD
OSCI
OSCO
Vss
TEST
V
FL
G1
G2
G3
G4
G5
G6
64
1

TC9274N-011 (AU: IC107)

41 40 39 38 37 36 35 34 33 32
18 bit Latch Circuit (Rch)
V
42
DD
(Lch) Same as Rch
V
SS 1
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
CO: IC304
Port Symbol
Q1 A
Q2 B
Q3 C
Q4 D
Q5 E
Q6 F
Q7 H
Q8 G
CO: IC305
Port Symbol
Q1 DIRECT/TONE DEFEAT DIRECT & TONE DEFEAT relay control (H:DIRECT,TONE DEFEAT)
Q2 S1
Q3 S2
Q4 EXT. IN
Q5 D
Q6 G
Q7 NC
Q8 FRONT A+B

LC75721E Terminal Function

Symbol
33
V Power terminal +5V
DD
Vss Power terminal GND
32
V Power terminal FL drive
FL
AM 17
Serial data transfer terminal
AM 18
DI
AM 19 DI: Data
CL
AM 20
CL: Clock
AM 21
CE
CE: Chip enable
AM 22
AM 23
OSCI
AM 24
External CR connecting terminal
AM 25
OSCO
AM 26
AM 27 System reset terminal
RES
AM 28
AM1~AM35
AM 29
Anode output terminal
AM 30
AA1~AA3
AM 31
AM 32 AA4/G16
17
AA5/G15
AA6/G14
Anode/Grid output terminal
16 AA7/G13
AA8/G12
G1~G11 Grid output terminal
TEST LSI test terminal
26
31 30 29 28 27 25 24
23 STB
22 DATA
21 CK
20
GND
Function
Video input switching
Video input switching
Video input switching
Video output switching
Video output switching
Video output switching
Video output switching
Video output switching
Function
Video signal switching control output
Video signal switching control output
Sub woofer channel gain control terminal (L:EXT. IN)
Video output switching
Video output switching
Current limiter control terminal (H:Front SP A+B)
BU2090F (CO: IC103)
Vss 1
Function
DATA 2
CLOCK 3
LCK 4
Q0 5
Q1 6
Q2 7
Q3 8
Q4 9
TC9274N-017 (EX: IC312)
41 40 39 38 37 36 35 34 33 32
18 bit Latch Circuit (Rch)
V
42
DD
(Lch) Same as Rch
V
SS 1
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
AVR-2802/982
CONTROL CIRCUIT
18
17
12-bit SHIFT RESISTER
16
12-bit STRAGE RESISTER
15
14
OUTPUT BUFFER (OPEN DRAIN)
13
12
11
10
26
31 30 29 28 27 25 24
23 STB
22 DATA
21 CK
20
GND
V
DD
OE
Q11
Q10
Q9
Q8
Q7
Q6
Q5
21