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VP551ECGGP1N Datasheet

  • VP551ECGGP1N

  • NTSC/PAL Digital Video Encoder

  • 16頁

  • MITEL

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VP531E/VP551E
NTSC/PAL Digital Video Encoder
Advance Information
Supersedes DS4573 1.4 May 1997 edition
DS4573 - 2.3 October1998
The VP531/VP551 converts digital Y, Cr, Cb, data into
analog NTSC/PAL composite video and S-video signals
The outputs are capable of driving doubly terminated 75
ohm loads with standard video levels.
The device accepts data inputs complying with CCIR
Recommendation 601 and 656. The data is time multiplexed
on an 8 bit bus at 27MHz and is formatted as Cb, Y, Cr, Y
(i.e. 4:2:2). The video blanking and sync information from
REC 656 is included in the data stream when the VP531 is
working in slave mode.
The output pixel rate is 27MHz and the input pixel rate
is half this frequency, i.e. 13.5MHz.
All necessary synchronisation signals are generated
internally when the device is operating in master mode. In
slave mode the device will lock to the TRS codes or the HS
and VS inputs.
The rise and fall times of sync, burst envelope and
video blanking are internally controlled to be within
composite video specifications.
Two 9 bit digital to analog converters (DACs) are used
to convert the digital luminance and chrominance data into
analog signals. An inverted composite video signal is
generated by summing the complementary current outputs
of each DAC. An internally generated reference voltage
provides the biasing for the DACs.
PIN 64
PIN 1
GP64
Fig.1 Pin connections (top view)
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
FUNCTION
VDD
GND
D0 (VS I/O)
D1 (HS I/O)
D2 (FC0 O/P)
D3 (FC1 O/P)
D4 (FC2 O/P)
D5
D6 (SCSYNC I/P)
D7 (PALID I/P)
GND
VDD
GND
GND
PXCK
VDD
CLAMP
COMPSYNC
GND
VDD
TDO
TDI
TMS
TCK
GND
SA1
SA2
SCL
VDD
SDA
GND
VDD
PIN
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
FUNCTION
VDD
RESET
REFSQ
GND
VDD
GND
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
GND
VDD
AGND
VREF
DACGAIN
COMP
AVDD
LUMAOUT
AGND
COMPOUT
AGND
CHROMAOUT
AVDD
N/C
N/C
AVDD
AVDD
N/C
FEATURES
s
Converts Y, Cr, Cb data to analog composite video and
S-video
s
Supports CCIR recommendations 601 and 656
s
All digital video encoding
s
Selectable master/slave mode for sync signals
s
Switchable chrominance bandwidth
s
Switchable pedestal with gain compensation
s
SMPTE 170M NTSC or CCIR 624 PAL compatible
outputs
s
GENLOCK mode
s
I
2
C bus serial microprocessor interface
s
VP531E supports Macrovision anti-taping format REV
6.1 in PAL and REV 7.01 in NTSC
APPLICATIONS
s
s
s
s
s
s
Digital Cable TV
Digital Satellite TV
Multi-media
Video games
Karaoke
Digital VCRs
ORDERING INFORMATION
VP531E/CG/GP1N
VP551E/CG/GP1N

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