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Bus Control Tuner IC
Bus Control Tuner IC
LV25200M
LV25200M
Overview
The LV25200M integrates an optimal reception system for varying reception conditions plus AM NC functions
that support reception worldwide. It also reduces the number of external components required.
Functions
FM front end
Multiplex
PLL
FM IF
AM upconversion
Autoalignment
Noise canceller
FM/AM switch
MRC
: CCB is SANYO's original bus format.
All bus addresses are managed by SANYO for this format.
Block Diagram
10K
C57
R57
4.7U
+
+
3.3U
C59
+
450K
0.022 F
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42
C61
AM
61
10.7MS3
IF-IN2
FM-IF-IN2
AM IF AMP
62
0.022 F
C62
CF10.7
FM-IF-IN
63
0.022 F
Gtime
AM RF-AGC
NC in
64
C58
65
MIX
1ST-IF-OUT
AM-MI 2
66
L_MI 2
OUT
reg4.9V
N AGC
+
R66
10 F
Vref
67
RF AGC
L_AM3
C67
75
R58
4.9V
W AGC
620
AM-MI 2-IN
L_AM4
68
0.022 F
AM-MI 2
FET
C69
69
BYPASS
FM cut
CPH5905
+
RF-DAC
70
DAC
Lodins coil
0.022 F
C35
IF-IN
ANT d
C71
71
100K
47U
0.022 F
BIAS
10.7MS3
72
1SV234
470
FM1stIF-IN
Pin_D
R73
CF10.7
TEST
73
AM-ANT-D
Keyed AGC
C78
C74
30P
N AGC
C73
74
0.022 F
N-AGC
W AGC
0.022 F
L_MIX
MIX-OUT
75
C75
32K
76
R101
R70
30
R102
MIX-OUT
330
FE-VCC
2.2k
C106
0
77
L104
0.025 F
C105
2200P
C77
0.075 F
2200P
R77
0.022 F
78
AM
C102
L102
FM-MIX-IN
L103
SVC203
1000P
6P
Pin_D
0.047 F
FM-MIX
IQ MIX
79
0.47 F
IN
C79
C101
FM-MIX
ANT D RF AGC
C103
80
1000P
18P
IN
L101
1P
12P
0.22 F
C105
1
2
3
4
C80
100
+
C2 C4
+
C107
R103
1 F
C109
2200P
0.01 F
8V
V CC
37 Car Audio
Under
Under
development
development
Features
FM
Image rejection mixer adopted
Built-in IF band filter
Supports reception in all areas worldwide
Crystal oscillator: 20.5 MHz
PLL
Supports high-speed locking
Serial bus control circuit (SANYO CCB bus)
AM
Increased mixer dynamic range, improved
noise filter
Increased IF amplifier dynamic range, improved
noise filter
Built-in noise canceller
MC, MPX, and MRC
Built-in MPX VCO (Obviates the need for a
ceramic oscillator)
Package: QFP80 (14
14 mm)
10K
R56
C
3.3U
C50B
C51
1U
R47
0.1 F
+
C47
0.47 F
0.22 F
10K
C56
C46
C42
R55
R43
C43
68K
+
10U
+
R41
1U
C50
1U
C49
10K 3300p
1000p
C48
C44
C41
41
C40
rey2.7V
AFC
40
QD
N amc
AM low cut
VSM-2
R40
+
+
Mute
MRC-OUT
C39
det
Time
-
39
AMP
1U
MIX
AM/FM
C38
0.22U
38
+
VSM
1M
+
+
BPF
-
-
-
NOISE
R37
delay
37
IF AGC
AGC
C37
0.47U
s-meter
Mute
Ccont
NOISE 10K
C36
36
SENC
R38
1000p
35
CHCC
C35
2200p
LPF
+
AGC
MPX
-
34
BUFF
PLL-IN
C34
0.47 F
AM NC
33
HPF
Trig
Gate
Triger OUT
anp
GND
32
Phase
19K<90
select
R31
3K
P-DET
MPX VCC
19K<0
31
0.47 F
+
8bit AD
TRIG
FF
30
C30
1U
38K<0
IN3-1
IN3-3
C29
1U
P-CAN
HCC
29
HCC
R29
15K
82K
IN3-2
IN3-4
SNC
28
R28
SNC
0.22 F
Sub
C27
27
decorder
V DD
IN1/IN2
bus
MATRIX
26
C26
R-OUT
OSC BUFFER
0.015 F
L-OUT
swallow
orogramable
ohase
reference
25
C25
counter
divider
detector
counter
0.015 F
24
1/10.1/8div
X' TAL GND
1/6.1/4
X TAL IN
C23
MIX
SD Stereo
23
3K
CP1
18pF
20.5M
div
R8
OSC
C22
22
Vref 3V
18pF
Vo1.
X TAL OUT
21
500K
X' TAL V CC
FM
OSC
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19
20
C6 C7
C12
C15
p11 up
VCD_OSC
100K
R20
100K
R13
L_OSC
2.4K
p11 up
0
0
0
0
30K
R12
C9A
SD Stereo IND.
Lch
Rch
OUT
OUT
TEST
6.8K
1000p
C8
220pF
0
GND
DO
0
TEST
DI
0
NC
SK
0
CS
V DD
30
EEPROM
CS
CE
DI CL DO
DO
V CC 2
V CC
TUNER
EEPROM
5V
5V
Overview
The LA2655V is a sound field recreation IC that is optimal for audio equipment and that includes the Plus Sound
algorithm.
The LA2655V is optimal for use in radio/cassette players, personal computers, TV sets, and other consumer
audio products including mini-compo systems.
The Plus Sound algorithm corrects for both delays and attenuations of the high and low frequency signals due to
the characteristics of the speakers and creates audio with extreme clarity.
Functions
Plus Sound algorithm
Clear Surround signal processing
Variable clear level effect (using external components)
Package: SSOP20 (225 mil)
Block Diagram
AM-NC
RDS-OUT
Gate-OUT
Clear Surround Control IC Includes Plus Sound Algorithm
Clear Surround Control IC Includes Plus Sound Algorithm
LA2655V
LA2655V
Conditional
Conditional
Product
Product
:This product is subject to change without notice for improvement. When considering the use of this
product, first refer to the latest SANYO "Semiconductor News" publication related to this device and
finally refer to the latest specifications for the device.
V CC
Lch-IN
C7
2200pF
C11
+
4.7 F
C10
C
C
R
1 F
+
2200pF
4.7 F
82000pF
N.C
V CC
AGND L-IN
LC1
LV1
LC2
20
19
18
17
16
15
14
Brightness control
(L-ch)
On/off control
Brightness control
(R-ch)
1
2
3
4
5
6
7
CONT1 GND
VREF
R-IN
RC1
RV1
RC2
+
+
R
C
C
C
4.7 F
1 F
2200pF
C
2200pF
L/H
Rch-IN
: Use of conditional products requires
: Use of conditional products requires
consultation with a SANYO representative
consultation with a SANYO representative
prior to the use of the device.
prior to the use of the device.
Lch-OUT
R4
C12
1 F
C13
+
LC3
LV2
L-OUT
13
12
11
A
SW
B
A
B SW
8
9
10
RC3
RV2
R-OUT
C5
+
1 F
C
82000pF
R2
Rch-OUT
38 Car Audio
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