VIDEO OUT
VIDEO APC FILTER
VCO
VCO
FM DIRECT OUT
EXT AUDIO IN
AUDIO OUT
- (R-Y) IN
- (B-Y) IN
- (R-Y) OUT
SECAM REF.
- (B-Y) OUT
X-TAL 4.43
SYNC SEP IN
Y SW OUT
VCD GND
TV IN
CHROMA APC FILTER
EXT IN
AUDIO BYPASS
X-TAL 3.58
FAST BLK
KILLER FILTER
R IN
AFC2 FILTER
G IN
MITSUBISHI ICs (TV)
M52778SP
VIF, SIF, VIDEO, CHROMA, DEFLECTION FOR PAL/NTSC
DESCRIPTION
The M52778SP is a single-chip semiconductor integrated circuit to
process signals of a color TV. Circuits to process video IF, sound IF,
video, color, and deflection signals, a I
2
C bus control circuit, and D/
A are build in this device.
This IC can be used not only for popular-type TV sets but also for
middle-class TV sets. Combined with a SECAM chroma decoder,
the M52325AP, this de vice can process signals of every type of TVs
in the world by discriminating them fully automatically.
FEATURES
•
A built-in I
number of peripheral parts and rationalize production lines.
Various filters (TRAP, BPF, Y-DL, RGB clamp) are build in this IC.
•
PLL detection system is introduced to process video IF and voice
•
IF. Furthermore, AFT coil is not necessary.
DL aperture control
•
Color signal frequency and vertical frequency of TVs of every
•
type can be discriminated fully automatically.
•
Horizontal/vertical countdown system
•
V-Ramp output
•
RGB output
2
C bus control circuit makes it possible to reduce the
ELECTRICAL CHARACTERISTICS
Video & RGB I/F block (∗ input SG50 at SY IN. (Y5 to Y7, Y36 to Y46:input SG60.)/VCC:P8, P24=5V.P9, P20=8V)
Input signal SW
SymbolParameter
Input SG PIN
−
Ymax
GY
FBY
2AGY
CTR1
TRF1
DTR1
CTR2
TRF2
DTR2
Default conditions of
video & RGB I/F
Maximum video
amplitude
Video gain
Video frequency
characteristics
Pin 38 output
amplitude
Chroma trap
attenuation 1
Chroma trap fine
adj. attenuation 1
Chroma double trap
attenuation 1
Chroma trap
attenuation 2
Chroma trap fine
adj. attenuation 2
Chroma double trap
attenuation 2
−−
VI SGA
VI SGA
VI SGB
VI SGA
VI SGF
VI SGF
VI SGF
VI SGB
VI SGB
VI SGB
YDL1Y delay time 1VI SGA
YDL2Y delay time 2VI SGA
YDL3Y delay time 3VI SGA
YDL4Y delay time 4VI SGA
GTnorVideo tone 1VI SGB
GTmaxVideo tone 2VI SGB
GTminVideo tone 3VI SGB
GT2MVideo tone 4VI SGB
S4S16S44S
45
P21P22P23P26P38P
4.5
40
DF
/
6.0
SW110000H00H
PIN00000000322006408
SW
PIN M M M
SW
PIN M M M64
SW33H
PINM5164
SW46H
PINM6 8
SW00/20H33H46H
PIN M M M
SW20/28H33H46H00/60H
PIN M M M
SW30H33H
PIN M M M1 151
SW00/20H33H
PIN M M M
SW20/28H33H00/60H
PIN M M M
SW30H33H
PIN M M M1 151
SW00H
PIN M M M0
SW01H
PIN M M M1
SW02H
PIN M M M2
SW03H
PIN M M M3
SW20H
PIN M M M3250
SW3FH
PIN M M M6350
SW00H
PIN M M MH50
SW20H
PIN M M M3250
Test conditions
Sub address function
02H04H
TR
A
F2
0/115168
0/1151
SH
TRAPVid
DB
F
DEFPCO
AR
G
P
0/1
516 8
0/151
08H0BH13H
05
H
NT
20
H
7F
H
127
40
H
40
H
32
H
32
H
32
H
32
H
0A
06H
TV/
DL
AU
BRYSE
EX
TA
TO
T
40
02H
H
H
09H
T
40H
HP DB
0C
10H
H
V-POTR
F
20
60H
H
32011
0/1
0/1
Min. Typ. Max.
HA
3.2 4.1 4.9 VP-P
8 11 14 dB
-4 0−dB
1.5 2.1 2.7 VP-P
−
−
−
−
155 240 325 nsec
135 220 265 nsec
250 380 450 nsec
345 500 605 nsec
1.1 1.6 2.1 V
0 3.6 6.7 dB
-10 -4 -1 dB
-2.0 1.0 4.0 dB
SER HST AFCG
Limits
Unit Note
-18 dB
−
-20 dB
−
-18 dB
−
-20 dB
−
P-P
7
ELECTRICAL CHARACTERISTICS
Video & RGB I/F block (cont.)
Input signal SW
SymbolParameter
Input SG PIN
GT5MVideo tone 5VI SGB
GYnorContrast 1
VI SGB SW
f=100kHz
GYminContrast 2
VI SGB SW
f=100kHz
LumnorBright 1
Lummax Bright 2
LumminBright 3
−−
−−
−−
D (R)Drive RVI SGA
D (B)Drive BVI SGA
EX (R)EXT (R) I/O
EX (G)EXT (G) I/O
EX (B)EXT (B) I/O
FB
ER
FB
EG
FB
EB
SW20H
PIN M M M3250
PIN
PIN
SW
PIN M M M64
SW
PIN M M M
SW
PIN M M M0
SW
PIN
SW
PIN
SW0
SGD
PIN M
SW0
SGD
PINM
SW0
SGD
PIN MM
MITSUBISHI ICs (TV)
M52778SP
VIF, SIF, VIDEO, CHROMA, DEFLECTION FOR PAL/NTSC
Test conditions
S4S16S44S
45
P21P22P23P26P38P
02H04H
4.5
40
TR
DF
/
A
F2
6.0
TRAPVid
DB
F
G
Sub address function
05
06H
H
SH
AR
P
DEFPCO
TV/
DL
AU
EX
NT
TA
TO
T
32
H
40
H
0A
H
BRYSE
09H
T
HP DB
0C
10H
H
V-POTR
F
MMM64
00
H
MMM0
40
H
7F
H
127
00
H
00/3FH
M0/
M0/
7F
H
127
7F
H
127
7F
H
127
63
00/
3FH
63
00
H
0
00
H
0
00
H
0
Limits
Min. Typ. Max.
HA
-4 -1.4 1.2 dB
2.1 2.5 2.9 V
−
−
1.1 1.4 1.8V
0.6 1.0 1.4V
-1.4 -1.0 -0.6V
2.9 5.5 7.1 dB
2.9 5.5 7.1 dB
4.8 6.0 7.2 V
4.8 6.0 7.2 V
4.8 6.0 7.2 V
Unit Note
P-P
50 mV
P-P
P-P
P-P
Video & RGB I/F block (cont.)
Input signal SW
SymbolParameter
Input SG PIN
OFRG
OFBG
C (R)Cut off R
C (G)Cut off G
C (B)Cut off B
Offset voltage
R-G
Offset voltage
B-G
−−
−−
−−
−−
−−
Test conditions
S4S16S44S
45
P21P22P23P26P38P
02H
4.5
40
TR
DF
/
A
F2
6.0
TRAPVid
DB
F
G
Sub address function
05
H
CONTDL
TA
06H
TV/
EX
AU
TO
T
08H0AH0DH0EH0F
CO
LO
R
SW
PINM64
SW
PINM M64
SW
PIN M64
SW
PINM
SW
PINM
BR
I
40
H
40
H
40
H
CR CG CB
00/
FFH
0/
255
00/
FFH
0/
255
H
ACLSERHSTAF
00/
FFH
0/
255
13H
CG
-160 0 160 mV
-160 0 160 mV
1.0 1.4 1.8V
1.0 1.4 1.8V
1.0 1.4 1.8V
Limits
Unit Note
Min. Typ. Max.
8
ELECTRICAL CHARACTERISTICS
Video & RGB I/F block (cont.)
1. Input SG3 and measure the rms value of output signal at pin 52.
2. P/N is defined as follows:
0NEG measured value (VP-P) ×10
P/N=20log
V
Measured value (mVrms)
BW Video frequency characteristics
1. Input SG4 and set the frequency f2 to 37.9MHz so that the beat
element of 1MHz is output to pin 52.
2. Then set the applied voltage at pin 4 so that the beat element of
1MHz at pin 52 may be 100dBµ.
3. Decrease f2 to the level at which the beat element becomes 3dB
smaller than the element of 1MHz, and read the value at that
level.
P52
100dBµ
1MHzBW
3
×0.7
(dB)
3dB
IM Intermodulation
1. Adjust the applied voltage at pin 4 so that the lowest output
signal voltage at pin 52 is 2.2V.
P52
2.2V
2. Measure elements of 1.07MHz and 4.43MHz of output at pin 52.
3. IM is defined as follows:
IM=20log
Element of 1.07MHz
Element of 4.43MHz
(dB)
ATT Maximum attenuation
1. Measure the element of 400Hz of output at pin 46.
ATT=20log
2.
V
Measured value
(dB)
0AFmax
LIM Input limiting sensitivity
Decrease the input level of SG 18. Measure the input level when the
element of 400Hz at pin 46 is 3dB smaller than V
0AFM (S6:
Maximum AF output (6.0M)).
Vin min. Input sensitivity
1. Decrease SG5 level until the video detector output is 3dB
smaller then the measured value of Parameter V3 “Video
detector output”.
Vin max. Maximum permissible input
1. Input 90dBu SG6.
2. VA is the output level at pin 52. Increase SG6 voltage until the
output at pin 52 becomes 3dB smaller than VA. The input levell at
that time is the maximum permissible input.
µAFTN AFT detector sensitivity (NEG)
V1HN Maximum AFT voltage (NEG)
V1LN Minimum AFT voltage (NEG)
See the following figure.
P1
5.0V
3.0V
V1HN
37.9Mz39.9MHzf0
∆f
V1LN
µAFTN is defined as follows:
µAFTN=
(5.0-3.0)×103mV
∆f kHz
(mV/kHz)
AMR
1. Vam is the element of 400Hz at pin 46.
2. AMR is defined as follows:
0AFS (mVrms)
AMR=20log
V
Vam (mVrms)
(dB)
AF S/N
1. Measure the noise (20Hz to 100kHz) of output at pin 46.
2. AF S/N is defined as follows:
AF S/N=20log
0AFmax
Measured value
(dB)
V
GEAu EXT Audio GAIN
Input SG22 at pin 47, and measure the output V
GAIN=20log
Input signal VP-P
Output signal VP-P (pin46)
Cn1 Output signal amplitude 1 (PAL)
Cn2 Output signal amplitude 2 (PAL)
1. Input SS4P to VI IN.
2. Measure output amplitude, Cn1 and Cn2, at pins 41 and 43
f
respectively.
P-P at pin 46.
(dB)
12
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