參數(shù)資料
型號： ML6430
廠商： Fairchild Semiconductor Corporation
英文描述： Genlocking Sync Generator with Digital Audio Clock for NTSC, PAL & VGA(用于NTSC, PAL & VGA數(shù)字式音頻同步時鐘發(fā)生器)
中文描述： 同步鎖相同步發(fā)生器用于NTSC，PAL與數(shù)字音頻時鐘
文件頁數(shù)： 1/33頁
文件大?。?/td> 384K
代理商： ML6430
December 1998
PRELIMINARY
ML6430/ML6431
*
Genlocking Sync Generator with
Digital Audio Clock for NTSC, PAL & VGA
1
GENERAL DESCRIPTION
The ML6430/ML6431 are multi-standard single-chip
BiCMOS video Genlock ICs for NTSC, PAL and VGA.
They are designed to provide a stable clock from an
analog video signal, and to provide timing pulses for
clamping, decoding, blanking and processing video
signals. The ML6430/ML6431 handle VCR glitches and
variations created by head switching, tape dropouts,
missing sync pulses, freeze frames, high speed playback
and camcorder gyro errors. The ML6430/ML6431 are
designed for high noise immunity, insensitivity to varying
signal amplitudes, overmodulated color carriers, and sync
glitches. Advanced analog and digital clock synthesis
techniques provide multi-standard and non-standard
operation from a single crystal or external asynchronous
clock source. Pin selectable preset modes allow operation
for most video standards in simple stand-alone mode
without the necessity of using the serial bus. For more
demanding applications, a two wire serial control bus is
available for full control of all of the ML6430/ML6431
features.
The ML6430/ML6431 are ideal for clock generation in
MPEG encoders, high performance display timing, and
video editing.
FEATURES
I
Line locked scalable horizontal pixel clock for an
arbitrary number of pixels per line
I
Standard frequencies of 12.27, 13.5, 14.75MHz, or 4Fsc
I
4
′
/2
′
or 2
′
/1
′
clock outputs (54 and 27MHz, or 27 and
13.5MHz) and VGA clocks
I
Audio clocks: 32, 44.1, or 48kHz, locked to video
I
On-chip sync separator, VCO and pulse generator
I
Low clock jitter: Short Term: <200ps rms locked
I
Line to line: <600ps rms (2.2ns peak-to-peak) locked
I
Fast recovery from VCR head switch, stable for fast
shuttle speeds and pause
I
Single crystal or external frequency source
I
PAL, NTSC or VGA operation
I
2 wire serial control bus, or selectable presets for stand
alone operation
I
RS170A compatible
* This Part Is End Of Life As Of August 1, 2000
BLOCK DIAGRAM
ANALOG PLL
DIGITAL PLL
PULSE AND AUDIO
CLOCK GENERATOR
DIGITAL PHASE DET.
AND FILTERING
DIGITAL PHASE
MOD.
CRYSTAL
OSC.
XTAL
IN
PHASE
DETECTOR
÷
N
HORIZ. PIXEL
COUNTER
VERT. LINE
COUNTER
DYNA. STATE MACH.
CONTROLLER
V
SYNC
C
VIN/
H
SYNC
÷
M
CV
REF
V
CC
S
V
CC
A
V
CC
B
V
CC
D
C
SYNC
LOCKED
H
RESET
F
RESET
GND S
GND A
GND B
GND D
SLEEP
/54MHz
FREERUN
S
CLAMP
B
CLAMP
/BURST
1X CLOCK/4X CLOCK
2X CLOCK
H
BLANK
V
BLANK
FIELD ID
AUDIOCLK/PHERROUT*
P0
P1
P2/S DATA
P3/S CLK
NOSIGNAL
6
7
8
11
12
3
13
5
10
20
30
16
17
24
25
2
1
32
31
18
19
27
28
22
23
15
29
21
9
4
XTAL
OUT
SIGNAL DETECT
MUX
SYNC SEPARATOR
14
26
REF
VCO
SERIAL CONTROL
AND PRESETS
*PHERROUT IS
ONLY AVAILABLE IN ML6431
相關(guān)PDF資料
PDF描述
ML6431 Genlocking Sync Generator with Digital Audio Clock for NTSC, PAL & VGA(用于NTSC, PAL & VGA數(shù)字式音頻同步時鐘發(fā)生器)
ML6440 Multi-Standard 8-bit Adaptive Digital Input Comb Filter(多標(biāo)準(zhǔn)8位自適應(yīng)數(shù)字輸入組合濾波器)
ML6460 CCIR656 NTSC Video Encoder(CCIR656標(biāo)準(zhǔn)NTSC視頻編碼器)
ML6509 Active SCSI Terminator(SCSI系統(tǒng)的有源終端器)
ML6510 Series Programmable Adaptive Clock Manager(系列可編程自適應(yīng)時鐘管理器)
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