Datasheet 搜索 > DSP数字信号处理器 > TI（德州仪器） > TMS320C25FNA 数据手册 > TMS320C25FNA 其他数据使用手册 1/2 页
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TMS320C25FNA 其他数据使用手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
DSP数字信号处理器
封装:
PLCC-68
描述:
第二代数字信号处理器 SECOND-GENERATION DIGITAL SIGNAL PROCESSORS
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TMS320C25FNA数据手册
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Key Features
• Supports multiple applications and
file formats, including MPEG-4,
MPEG-1, JPEG, M-JPEG, H.263,
MP3 and AAC
• Highly integrated system-on-a-
chip (SoC) design with a power-
efficient DSP core reduces overall
system cost
• Specifically designed for a low-
cost, high-performance digital
camera solution but has the
headroom to run all your portable
multimedia applications
Product Bulletin
TMS320DSC25
High-Performance/Low-Power
Digital Imaging Solution
Flexibility and Performance
Offering features that provide
greater design flexibility and speed,
the TMS320DSC25 processor
solution from Texas Instruments
(TI) achieves video performance
increases of up to 100 percent
and reduces power consumption
by 25 percent over its previous
generation. Providing system
designers with a means to improve
and differentiate their digital audio,
imaging and video products, the
DSC25 programmable solution
extends the performance and
functionality of TI’s successful
DSC21 platform.
The DSC25 is a single-chip
audio/visual image-processing
engine containing all functions
required for communication with
external devices, including an on-
chip CCD controller; USB; seamless
interface to popular storage media
like CompactFlash
TM
, Secure
Digital
TM
, MultiMediaCard (MMC),
SmartMedia
TM
and Memory Stick
TM
;
an integrated NTSC/PAL video
encoder; and a real-time preview
engine for live viewing. Combining
the power-efficient TMS320C5000
TM
DSP with an ARM7TDMI
®
RISC
processor provides programming
flexibility for inclusion of unique
features in new digital imaging
and multimedia systems. The
DSC25 also permits product up-
gradeability as standards evolve
and hardware platform reuse to
secure a time-to-market advantage.
This new device supports the
capture of still images at up to
3 megapixels in less than a
1-second shot-to-shot delay.
Though targeted at the digital still
camera market, the DSC25 is
much more than just a digital
camera chip—it is a multimedia
system-on-a-chip (SoC) solution.
In addition to supporting basic
camera functions such as JPEG
capture, the DSC25 fully supports
other highly valued multimedia
compression standards including
M-JPEG, MPEG-1, MPEG-4, H.263,
MP3 and AAC. The DSC25 sup-
ports CIF resolution (352 × 288)
MPEG-4 I+P frame video encode
and decode of 20 frames per second
(fps). The DSC25 is a fully program-
mable, highly flexible solution
ideally suited for imaging applica-
tions including digital cameras,
dual-purpose PC cameras and
other multimedia consumer
applications.
ARM System Controller
ARM7TDMI, a 32-bit RISC proces-
sor, is built into the DSC25 as the
system controller. The ARM7TDMI
CPU performs general system
R EAL
W
ORLD S IGNAL P ROCESSING
TM
CCD
Module
External
CPU
(Host or
Slave)
A/D, D/A Serial
Interface for Audio (2)
USB/UART
Serial Interface
General-Purpos
I/O
TV, LCD
Screen
SRAM/
Flash ROM/
Other Devices
SDRAM
Preview
Engine
SDRAM
Controller
NTSC/PAL
Encoder,
OSD
DSP Subsystem
TMS320C5000
TM
System
Controller
ARM7
Memory
USB
Core
I/O
Block
External
Memory
Interface
External
CPU
Interface
CCD
Controller
TMS320DSC25 Functional Block Diagram
Technical Details
• TMS320C5000
TM
DSP and
ARM7TDMI
®
RISC processor
• 500-MIPS DSP subsystem
• Support for 32-bit and 16-bit SDRAM
interface at 80 MHz
• 30 fps, full NTSC/PAL preview (real-
time)
• Support for NTSC/PAL composite,
analog RGB, S-video and 8-bit digital
LCD outputs
• Supports CMOS and CCD imagers
• Efficient support of real-time
operating systems such as
Nucleus
TM
, VxWorks
®
, Linux
TM
and
MicroITRON
TM
• Fully compatible with SmartMedia
TM
,
Secure Digital
TM
, CompactFlash
TM
,
MMC and Memory Stick
TM
• 32 user-programmable, general-
purpose serial I/Os for peripheral
control
• 288 GHK MicroStar BGA
TM
package
(16 × 16 × 0.8 mm)
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