NW721
Advanced Information
DV Codec (Encoder/Decoder)
Features and Benefits
Video
· Full Codec functionality
Encodes ITU-R BT.656 to DV
Decodes DV to ITU-R BT.656
· IEC-61834 compliant
DV "Blue Book" standard video
· NTSC (30 fps) and PAL (25 fps) support
· Integrated high-quality multi-tap filter
4:2:2 to 4:1:1 conversion (NTSC)
4:2:2 to 4:2:0 conversion (PAL)
· Adaptive bit-rate allocation (patent pending)
· Standard ITU-R BT.656 output video bus
Audio
· 12-bit and 16-bit audio
32, 44.1, 48 kHz
· Lip-Locked
TM
A/V synchronization
· Direct I
2
S interface to audio CODEC
System
· Embedded microcontroller:
8051 compatible
ARM/MIPS style external host interface
· Direct interface to 1394 Link devices
· Direct interface to standard SDRAM
· AUX code processing
· Two-wire serial interface (I
2
C)
· 12 GPIO pins for enhanced system control
Physical
· BGA package
· 0.18 micron process
· 1.8V core, 3.3V (5V compatible) I/O
Overview
Description
The
divio
NW721 DV Codec connects directly to standard
1394 A/V Link layer devices and performs full video codec
functionality between IEC-61834 DV and ITU-R BT.656.
Complete audio and AUX code processing is also provided.
The NW721 provides a bi-directional digital-to-digital path
for DV camcorders ensuring the highest possible quality A/V
processing all over a single cable. Full codec functionality
provides real-time output, and editing, capability in addition
to standard decoding.
Block Diagram
ITU-R BT.656
Video
DV
I
2
S
Audio
NW721 DV Codec
DV
Codec
1394
RTI Interface
8051
Micro
Host
Interface
Data
Formatter
Memory
Controller
1394 Link
Interface
I
2
C
Host Interface
(ARM/MIPS)
GPIO
SDRAM
Sales Information:
divio
inc.
441 De Guigne Drive
Sunnyvale, CA 94085 USA
Tel: (408)
328-3333
Fax: (408)
328-3399
web:
www.divio.com
email: sales@divio.com
Confidential Information Requires NDA
page 1
April 6, 2002
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