M52347SP Datasheet, PDF (1/17 Pages) Mitsubishi Electric Semiconductor – SYNC SIGNAL PROCESSOR

M52347SP/FP
Sync Signal Processor
REJ03F0190-0200
Rev.2.00
Sep 14, 2006
Description
The M52347 automatically selects three types of synchronous signals containing separate sync (positive and negative
polarities of 0.5 to 2.5 V_P-P), composite sync (positive and negative polarities of 0.5 to 2.5 V_P-P) and sync-on-video
(sync negative polarity), and performs waveform shaping. The IC is optimum to synchronous signal processing for
multi-scan type display monitor.
Features
• Low power consumption with supply voltage of 5 V
• Capable of obtaining output information on whether to input synchronous signal, and on polarity
• Output of clamp pulse
• Equipped with V TIME GATE SW that enables selecting whether or not VD portion pulse is output from pin 14/15.
• Equipped with CLAMP SW that enables switching the clamp pulse output position.
Application
Display monitor
Recommended Operating Condition
Supply voltage range:
Rated supply voltage:
V_CC = 4.5 to 5.5 V
V_CC = 5 V
Block Diagram
CLAMP
CLAMP⁺
TIMING V.POL. H.POL. OUT
V_CC
20
19
18
17
16
HD^−
OUT
15
HD⁺
OUT
14
VD⁺
OUT
13
V S/S
OUT
12
V S/S
IN
11
CLAMP
GEN
EDGE
SW
V.TIME
GATE
V.SYNC
SEP
LOGIC
LOGIC
SYNC
SEP
H
H
V
V
SHAPE DET SHAPE DET
1
2
3
4
H.STATE V.STATE CLAMP GREEN
SW
IN
5
GND
6
7
COMP/H COMP/H
IN
DET
8
V IN
9
10
V DET V TIME GATE
SW
Rev.2.00 Sep 14, 2006 page 1 of 16