參數(shù)資料
型號(hào)： ADV611JSTZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 12/46頁(yè)
文件大小： 0K
描述： IC CCTV DGTL VIDEO CODEC 120LQFP
標(biāo)準(zhǔn)包裝： 1
類(lèi)型： 視頻編解碼器
數(shù)據(jù)接口： 串行
分辨率（位）： 8 b
三角積分調(diào)變： 無(wú)
電壓 - 電源，數(shù)字： 4.5 V ~ 5.5 V
工作溫度： 0°C ~ 70°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 120-LQFP
供應(yīng)商設(shè)備封裝： 120-LQFP（14x14）
包裝： 托盤(pán)
ADV611/ADV612
–2–
REV. 0
TABLE OF CONTENTS
This data sheet gives an overview of the ADV611/ADV612’s
functionality and provides details on designing the part into a
system. The text of the data sheet is written for an audience with
a general knowledge of designing digital video systems. Where
appropriate, additional sources of reference material are noted
throughout the data sheet.
GENERAL DESCRIPTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1
COMPARING THE ADV6xx FAMILY VIDEO CODECS . . . . . 3
INTERNAL ARCHITECTURE
. . . . . . . . . . . . . . . . . . . . . . . . 4
GENERAL THEORY OF OPERATION . . . . . . . . . . . . . . . . . . 4
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
THE WAVELET KERNEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
THE PROGRAMMABLE QUANTIZER
. . . . . . . . . . . . . . . . . 8
THE RUN LENGTH CODER AND HUFFMAN CODER . . . . . 9
Encoding vs. Decoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PROGRAMMER’S MODEL . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ADV611/ADV612 REGISTER DESCRIPTIONS . . . . . . . . . . 11
VIDEO AREA REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . 18
Video Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Video Formats–CCIR-656 . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Host Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
DRAM Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Compressed Data-Stream Definition . . . . . . . . . . . . . . . . . . . 24
APPLYING THE ADV611/ADV612 . . . . . . . . . . . . . . . . . . . . 30
Using the ADV611/ADV612 in Computer Applications . . . . . . 30
Using the ADV611/ADV612 in Stand-Alone Applications . . . . 31
Connecting the ADV611/ADV612 to Popular Video
Decoders and Encoders . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
GETTING THE MOST OUT OF ADV611/ADV612 . . . . . . . 32
How Much Compression Can Be Expected . . . . . . . . . . . . . . 32
Evaluation Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Software Codec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Field Rate Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Edge Enhancement and Detection . . . . . . . . . . . . . . . . . . . . . 32
Motion Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
ADV611/ADV612 SPECIFICATIONS . . . . . . . . . . . . . . . . . . 33
TEST CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
TIMING PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Clock Signal Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CCIR-656 Video Format Timing . . . . . . . . . . . . . . . . . . . . . . 35
Multiplexed Philips Video Timing . . . . . . . . . . . . . . . . . . . . . 37
Host Interface (Indirect Address, Indirect Register Data,
and Interrupt Mask/Status) Register Timing . . . . . . . . . . . 40
Host Interface (Compressed Data) Register Timing . . . . . . . 42
ADV611/ADV612 LQFP PINOUTS . . . . . . . . . . . . . . . . . . . . 44
ADV611/ADV612 PIN CONFIGURATION . . . . . . . . . . . . . . 45
OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
46
GENERAL DESCRIPTION (Continued from page 1)
ADV611/
ADV612
VIDEO CODEC
CCTV DIGITAL
VIDEO INTERFACE
HOST INTERFACE
DIGITAL VIDEO IN
(ENCODE)
DIGITAL VIDEO
OUT (DECODE)
COMPRESSED
VIDEO OUT
(ENCODE)
COMPRESSED VIDEO
IN (DECODE)
STATUS AND CONTROL
Figure 2. Functional Block Diagram
The ADV611/ADV612 adheres to international standard
CCIR-601 for studio quality digital video. The codec also sup-
ports a range of field sizes and rates providing high performance
in computer, PAL, NTSC, or still image environments. The
ADV611/ADV612 is designed only for real-time interlaced
video; full frames of video are formed and processed as two
independent fields of data. The ADV611/ADV612 supports the
field rates and sizes in Table I. Note that the maximum active
field size is 720 by 288. The maximum pixel rate is 13.50 MHz.
The ADV611/ADV612 has a generic 16-/32-bit host interface
that includes a 512-position, 32-bit wide FIFO for compressed
video. With additional external hardware, the ADV611/ADV612’s
host interface is suitable (when interfaced to other devices) for
moving compressed video over PCI, ISA, SCSI, SONET, 10 Base
T, ARCnet, HDSL, ADSL and a broad range of digital inter-
faces. For a full description of the Host Interface, see the Host
Interface section.
The compressed data rate is determined by the input data rate
and the selected compression ratio. The ADV611/ADV612 can
achieve a near constant compressed bit rate by using the current
field statistics in the off-chip bin width calculator on the exter-
nal DSP or Host. The process of calculating bin widths on a
DSP or Host can be “adaptive,” optimizing the compressed bit
rate in real time. This feature provides a near constant bit rate
out of the host interface in spite of scene changes or other types
of source material changes that would otherwise create bit rate
burst conditions. For more information on the quantizer, see
the Programmable Quantizer section.
The ADV611/ADV612 typically yields visually loss-less com-
pression on natural images at a 4:1 compression ratio. For more
information on compression ratios, see the Getting the Most
Out of the ADV611/ADV612 section. Desired image quality
levels can vary widely in different applications, so it is advisable
to evaluate image quality of known source material at different
compression ratios to find the best compression range for the
application. The subband coding architecture of the ADV611/
ADV612 provides a number of options to stretch compression
performance. These options are outlined in the Applying the
ADV611/ADV612 section.
Table I. ADV611/ADV612 Field Rates and Sizes
Active
Total
Standard
Region
Field Rate
Pixel Rate
Name
Horizontal
Vertical
1
Horizontal
Vertical
(Hz)
(MHz)
2
CCIR-601/525
720
243
858
262.5
59.94
13.50
CCIR-601/625
720
288
864
312.5
50.00
13.50
NOTES
1The maximum active field size is 720 by 288.
2The maximum pixel rate is 13.5 MHz.
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