ADV612BST Analog Devices Inc, ADV612BST Datasheet - Page 2

• Manufacturer Part Number: ADV612BST
• Manufacturer: Analog Devices Inc

Specifications of ADV612BST

• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: -25C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 120
• Lead Free Status / Rohs Status: Compliant

ADV611/ADV612
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
THE WAVELET KERNEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
THE PROGRAMMABLE QUANTIZER . . . . . . . . . . . . . . . . . 8
THE RUN LENGTH CODER AND HUFFMAN CODER . . . . . 9
PROGRAMMER’S MODEL . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ADV611/ADV612 REGISTER DESCRIPTIONS . . . . . . . . . . 11
VIDEO AREA REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . 18
APPLYING THE ADV611/ADV612 . . . . . . . . . . . . . . . . . . . . 30
GETTING THE MOST OUT OF ADV611/ADV612 . . . . . . . 32
ADV611/ADV612 SPECIFICATIONS . . . . . . . . . . . . . . . . . . 33
TEST CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
TIMING PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
ADV611/ADV612 LQFP PINOUTS . . . . . . . . . . . . . . . . . . . . 44
ADV611/ADV612 PIN CONFIGURATION . . . . . . . . . . . . . . 45
OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard
Name
CCIR-601/525
CCIR-601/625
NOTES
1
2
The maximum active field size is 720 by 288.
The maximum pixel rate is 13.5 MHz.
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Encoding vs. Decoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Video Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Video Formats–CCIR-656 . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Host Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
DRAM Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Compressed Data-Stream Definition . . . . . . . . . . . . . . . . . . . 24
Using the ADV611/ADV612 in Computer Applications . . . . . . 30
Connecting the ADV611/ADV612 to Popular Video
How Much Compression Can Be Expected . . . . . . . . . . . . . . 32
Evaluation Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Clock Signal Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CCIR-656 Video Format Timing . . . . . . . . . . . . . . . . . . . . . . 35
Multiplexed Philips Video Timing . . . . . . . . . . . . . . . . . . . . . 37
Host Interface (Indirect Address, Indirect Register Data,
Host Interface (Compressed Data) Register Timing . . . . . . . 42
Using the ADV611/ADV612 in Stand-Alone Applications . . . . 31
Software Codec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Field Rate Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Edge Enhancement and Detection . . . . . . . . . . . . . . . . . . . . . 32
Motion Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Decoders and Encoders . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
and Interrupt Mask/Status) Register Timing . . . . . . . . . . . 40
Active
Region
Horizontal
720
720
Active
Region
Vertical
243
288
Table I. ADV611/ADV612 Field Rates and Sizes
1
Total
Region
Horizontal
858
864
46
–2–
GENERAL DESCRIPTION
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.
DIGITAL VIDEO IN
VIDEO INTERFACE
DIGITAL VIDEO
OUT (DECODE)
(ENCODE)
Total
Region
Vertical
262.5
312.5
Figure 2. Functional Block Diagram
VIDEO CODEC
CCTV DIGITAL
ADV611/
ADV612
(Continued from page 1)
(Hz)
59.94
50.00
Field Rate
COMPRESSED
VIDEO OUT
(ENCODE)
HOST INTERFACE
COMPRESSED VIDEO
IN (DECODE)
STATUS AND CONTROL
Pixel Rate
(MHz)
13.50
13.50
REV. 0
2