The M52393 are integrated-circuits of a semiconductor, developed
especially for EDTV2 identification signal detection.
In contrast to such ICs, few products on the IC market had the
simple function of detecting identification signals. For that purpose,
many manufacturers had to combine discrete components (nonICs) with gate arrays. There was a great demand for ICs that
enabled cost reduction.
In order to satisfy demand, we have developed the EDTV2
identification signal processing ICs that include all necessary
capabilities for detection (synchronous signal separation, line
counter, filters, level detection, and bit judgment). The use of such
ICs reduces parts, eliminates the need for complicated adjustment,
and enables easy handling and cost reduction.
FEATURES
•
All necessary detection capabilities, such as a synchronous signal separation circuit, are integrated into a single microchip. The
use of the microchip can simplify application circuits, and eliminate the need for adjustment. (Only two inputs are provided:
video signal input and fsc signal input.)
•
Our original method is used for distinguishing EDTV2 identification signals from normal video signals.
Therefore the accuracy of identification is improved.
The detection level is adjustable.
•
The microchip operates on a single supply voltage of 5V.
•
Two types of packages are provided:
•
DIP with a lead pitch of 2.54mm (M52393P); and SOP with a
pitch of 1.27mm (M52393FP).
PIN CONFIGURATION (TOP VIEW)
2.04M TRAP
COMP1
CLAMP1
COMP2
CLAMP2
COMP3
CORRELATION SW
LINE
GND
1
2
3
4
7
8
16
V
15
M52393P/FP
VIDEO IN
14
3.58M TRAP
13
SYNC SEPA FILTER
125
V.SEPA FILTER
116
f
10
FRAME/FIELD SW
DET OUT
9
CC
SC IN
Outline 16P4
16P2N-A
APPLICATION
TV and videocassette recorder compatible with EDTV2.
RECOMMENDED OPERATING CONDITION
Supply voltage range........................................................4.7 to 5.3V
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
357
aa
ON ON
aa
ON ON
aa
ON ON
ON ON
aa
aa
ON ON
aa
ON ON
ON ON
aa
ON ON
aa
aa
ON ON
aa
ON ON
ON ON
aa
aa
ON ON
aa
ON ON
ON ON
aa
ON ON
aa
aa
ON ON
aa
ON ON
ON ON
aa
aa
ON ON
9-1 9-2
11-1 11-2
10
a
ON
a
ON
a
ON
ON
a
a
ON
a
ON
ON
a
ON
a
a
ON
a
ON
ON
a
a
ON
a
ON
ON
b
ON
a
c
ON
a
ON
ON
a
a
ON
14-1 14-2 14-3
12
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
3
INPUT SIGNALS FOR TESTING
MITSUBISHI ICs (AV COMMON)
M52393P/FP
EDTV2 IDENTIFICATION SIGNAL DETECTOR
15pin input video signal (SG15)
S1143mV
S2286mVP-P
S3
T1
T2
T3
P-P
42mV
P-P
143mVP-P
143mVP-P
143mVP-P
143mVP-P
143mVP-P
143mVP-P
(Signals during V. Sync are not shown)
L20L21L22L23L24
1MHz
2.04MHz
3.58MHz
5MHz
T4
143mVP-P
143mVP-P
F1
F2
F3
3.58MHz
0
3.58MHz
0
3.58MHz
0
300mVP-P
100mV
P-P
600mVP-P
4
MITSUBISHI ICs (AV COMMON)
M52393P/FP
EDTV2 IDENTIFICATION SIGNAL DETECTOR
MODE T ABLE
ModeConditionsFunctions
2
COMP. 1 OFFDetector off at Bit 1 to 5, 24
COMP. 2 OFFDetector off at Bit 25 to 27
COMP. 3 OFF2.04MHz detector off at Bit 25 to 27
0 to 0.3V
4
0 to 0.3V
6
0 to 0.3V
ON
Line correlation SW
(Shown in Fig.1)
OFF
Frame
Frame/Field SW
(Shown in Fig.2)
Field
TRICK MODE
FUNCATIONAL DESCRIPTION
Input signal
7fsc
7
7
10
10
14
39µH
47pF
0 to 0.5V
2 to 3V
(2.5V at open)
0 to 0.5V
2 to 3V
(2.5V at open)
500Ω
ON
In a case an EDTV2 identification signal (or an equivarent
one) is detected a couple of times during three lines of 21
to 23 (line 284 to 286), the output will be Lo (a standard
signal).
On the other hand, the output will be Hi (an EDTV2 signal) through the ID signal is detected a couple of times
during the three lines.
The detection is performed once a field. The choice
between Odd or Even is difficult. (effective data : 8 fields/
8 frames)
The detection is performed in both fields. (effective data :
8 fields/4 frames )
The output state before the TRICK mode setting is kept
regardless of an input signal.
123456789101112131415161718192021222324252627Bit
Video in pin15
H.SYNC
Bit 1⋅2 3 4 5 24 25⋅26⋅27
Name Reference Letter box Parity SQZ 0 Sine wave for confirming
NRZ form
fsc in pin11fsc, 0.3VP-P±6dB, Sine wave (ansynchronous signals are permitted)
5
22H/285H
4/7fsc
286mV
P-P
(80/140IRE)
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