m52340sp Mitsumi Electronics, Corp., m52340sp Datasheet - Page 26

• Manufacturer Part Number: m52340sp
• Description: Pal/ntsc System Shingle-chip Color Tv Signal Processor
• Manufacturer: Mitsumi Electronics, Corp.

TH Horizontal pulse width
VH Horizontal pulse amplitude
HSTO Horizontal stop operation
AFCG AFG gain operation
FV Vertical free run frequency
VVL Minimum vertical output voltage
CoinL Minimum coincidence detection voltage
SW Service SW operation
FPV Vertical pull-in range
VVL Vertical pulse width
VBLKW Vertical BLK width
x x
Confirm that the horizontal output is high when the
horizontal stop switch is on.
1. Measure AFCon which is the output amplitude of pin 16
2. AFCG is defined as follows:
Measure the output frequency at pin 18 when no signal is
input.
Measure the output DC voltage at pin 28 when no signal is
input.
Measure the output DC voltage at pin 18 when the service
switch is on.
Decrease the frequency of SGd and measure the frequency
when output waveform at pin 18 is pulled in.
when AFC switch is on and AFCoff which is that when
the switch is off.
AFCG = 20 log
x x x x
x x x x
TH
AFCon (V
AFCoff (V
VH
P-P
P-P
x x
)
)
M
M
M
(dB)
PAL/NTSC SYSTEM SHINGLE-CHIP COLOR TV SIGNAL PROCESSOR
GND
GND
GND
Output waveform at
pins 21, 22 and 23
P18 V. PULSE
P18 V. PULSE
P13 H OUT
AVER1 50/60 confirmation 1
AVER2 50/60 confirmation 2
AVER3 50/60 confirmation 3
AVER4 50/60 confirmation 4
WVSS Minimum sync detection width
Confirm that the frequency of output at pin 18 is the same at
each input frequency (pull-in state). Also, confirm the state
of the bus write mode (D7).
Reduce the width of signal SGd and measure the width of
input signal when the output waveform at pin 18 disappears.
MITSUBISHI ICs (TV)
M52340SP