Ic Block Diagram - Aiwa XP-MP3 Service Manual

IC BLOCK DIAGRAM - 1/3

IC, SN74LV244APW
1OE 1
1A1 2
4
1A2
6
1A3
8
1A4
2OE 19
11
2A1
13
2A2
15
2A3
17
2A4
INPUTS
OE
L
L
H
H : Hight Level
L : Low Level
X : Unless specified
Z : Hight Impedance
IC, CXA1791N
1.25V
VCC
20
18 1Y1
16
1Y2
14
1Y3
12
1Y4
9
2Y1
7
2Y2
5
2Y3
3
2Y4
10
GND
OUTPUT
Y
A
H H
L L
X Z
VCC LDON RFI
20 19 18
GND
VCC
8k
VC
VC
50k
VC
6p
V2
8k
GND
VC
GND
1 2 3
LD PD PD1
IC, S-80825ANNP-EDN
2
VDD
Vref
4
VSS
RFO FE FE BIAS
17 16 15
87k
VC 30k
24p
VC
26k 13k
VC
6p
12p
8k
GND
VC VC
4 5 6
PD2 GND F
-19-
TE EI EO NC
14 13 12 11
20k 20k
VC
VC
7 8 9 10
E VR VC NC
1 OUT
3 NC