CL-MD1724T [CIRRUS]
Modem-Support Circuit, PQFP44, VQFP-128;
| 型号： | CL-MD1724T |
| 厂家： | 
CIRRUS LOGIC |
| 描述： | Modem-Support Circuit, PQFP44, VQFP-128 电信 电信集成电路 |
| 文件： | 总6页 (文件大小：160K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CL-MD56XX
â
Preliminary Product Bulletin
FEATURES
V.34 FastPathä 56K
■ Complete PC telephony solution
Ñ Controller-based, robust platform
Data/Fax/Voice
Chipset Family
â
Ñ Exceeds Microsoft PC 95 requirements
Ñ Full-duplex, echo-cancelled digital speakerphone
Ñ ITU (International Communications Union) V.80
videoconferencing
Ñ ITU-V.70 DSVD (digital simultaneous voice and data)
upgrade option
Ñ International telephony support
OVERVIEW
The CL-MD56XX chipset family is
a software-
■ Data modulation
upgradable 56K solution with a complete set of industry-
standard voice, data, and fax features. The
â
Ñ US Robotics ´2ä Technology
Ñ ITU-V.34 (33,600 to 2400 bps) symmetric and
asymmetric operation
â
US Robotics ´2ä Technology provides effective data
receive rates of up to 53.33 kbps and ensures
interoperability with major Internet service providers
around the world. Chipset features include
simultaneous voice and data operation, ITU-V.80
videoconferencing, and full-duplex speakerphone.
Ñ ITU-V.32 bis, V.23, V.22 bis, V.21
â
Ñ Bell 212A and 103
■ Fax modulation
Ñ ITU-T V.17, V.29 to 14,400 bps
■ Voice coder
Integrated, Open Architecture
Ñ Voice compression: ADPCM, linear, and CL1
Ñ 4800, 7200, 8000, 9600, and 11025 samples per
second
The CL-MD56XX is based on the FastPath platform,
which comprises an open-architecture ARM (Advanced
RISC Machines) controller and a proprietary high-MIPS
DSP (digital signal processor). Each component is high-
ly integrated using Cirrus LogicÕs state-of-the-art pro-
cess technology.The result is a platform with low power
requirements and high performance.The FastPath plat-
■ Data link layer protocols
â
Ñ Error correction: ITU-V.42 and MNP 2Ð4
â
Ñ Data compression: ITU-V.42 bis and MNP 5
■ DTE integrated interface alternatives
Ñ Serial RS-232/V.24 interface
(cont. next page)
(cont. next page)
System
Block Diagram
FLASH ROM / EPROM / RAM
CL-MD56XX
SRAM
HOST
COMPUTER
BUS
SAFE
TIP
RING
CL-MD1724
or
DAA
mP
CL-MD44XXC
CL-MD1724T
DSP
CL-MD56XXD
or
MICROPHONE / SPEAKER
CL-MD56XXDT
SAFE
CL-MD1724 or
CL-MD1724T
(OPTIONAL)
(OPTIONAL)
NVRAM
+
RAM
June 1997
CL-MD56XX
56K Data/Fax/Voice Chipsets
FEATURES (cont.)
Ñ ISA bus direct or plug and play
Ñ PC Card bus interface
Ñ IS-101 voice commands
■ Minimal-component design
Ñ Direct connection to ISA bus
Ñ Single crystal
■ Voice telephony
Ñ Full-duplex, echo-cancelled digital speakerphone
Ñ Telephone emulation for headset applications
Ñ Passive hybrid
â
Ñ Radish VoiceViewä upgrade option
■ Low power requirements
â
â
Ñ Microsoft Windows TAPI-compliant
Ñ Single +5-V power source; 3.3-V DSP option
Ñ Automatic sleep and wake-up modes
Ñ ITU-V.70 DSVD upgrade option
■ Controller functionality
Ñ Industry-standard AT command-driven
Ñ Class 1 fax
■ Small package options
Ñ Controller and DSP: 128-pin SQFP or VQFP
packages
OVERVIEW (cont.)
â
formÕs scalability allows the graceful addition of comput-
er telephony features such as DSVD, speakerphone,
and telephone emulation. The FastPath platform is
equally suitable for both mobile and desktop solutions
due to its integrated PC Card (PCMCIA), plug-and-play,
and serial interfaces. Additionally, the CL-MD56XX ex-
is upgradable with Radish VoiceViewä for alternate
transfers of voice and data over the same connection.
The DSVD upgrade option enables data transfer in
realtime during a voice conversation, an essential for
whiteboard applications and sophisticated customer
support. Additionally, the full-duplex, echo-cancelled
digital speakerphone offers the latest technology for
hands-free computer telephony.The speakerphone op-
erates in all modes, including DSVD. All voice features
are fully compliant with Microsoft Unimodem V and
TAPI standards, and all voice commands comply with
IS-101 voice command standards.
â
â
ceeds Microsoft PC 95 speciÞcations for Windows
and legacy applications.
SatisÞes Legacy Applications
The CL-MD56XX supports all requirements for PC-
based communications, whether for internal, standal-
one, or PC Card applications. With its robust controller
and powerful DSP, the CL-MD56XX supports even the
most demanding MS-DOS gaming applications. The
CL-MD56XX supports all industry-standard AT com-
mands for data, IS-101 voice, and Class 1 fax.
International Telephony Support
â
The CL-MD56XX chipsets support international appli-
cations for PC Card, ISA, and serial bus designs, and
Cirrus Logic also provides international DAA (data ac-
cess
arrangement)
design
recommendations.
Versatile 56K Platform
Cirrus LogicÕs conÞguration utility enables easy cus-
tomization of Þrmware for international requirements.
The CL-MD56XX offers data receive speeds at up to
56 kbps using US Robotics ´2 Technology. Current re-
strictions by the Federal Communications Commission
limit actual data receive speeds to 53.33 kbps. Prod-
ucts can be designed for complete software upgradabil-
ity or ROM chip upgrades.The CL-MD56XX is expected
to support any eventual ITU 56-kbps standard.
Platform of the Future
The CL-MD56XX is a solid base for future innovation.
The unique caching architecture in the controllerÕs em-
bedded RISC processor enables the use of lower-cost
memory chips.The controller code can be modiÞed in a
C-language development environment, and the ßash
memory interface permits Þeld software upgrades.
Comprehensive Telephony Features
Voice telephony is becoming increasingly important in
modem-based products. The CL-MD56XX has a com-
plete telephony interface (including Caller ID and voice
mail) and answering machine capabilities (including call
progress detection and tone generation).
The DSP delivers the bandwidth to handle multiple
tasks simultaneously and to support specialized func-
tions. Many advanced features are already built-in, in-
cluding a DSVD vocoder and a full-duplex, echo-
cancelled speakerphone. Concurrent operation is en-
abled for even the most advanced features, such as
speakerphone operation in DSVD mode.
For more advanced voice features, the CL-MD56XX
adds telephone emulation for headset applications and
PRODUCT CONFIGURATION OPTIONS
The standard features of each chipset are listed in the following table.
Program
Buffer
Memory
(SRAM)
Parallel/Serial
PC Card
DSP
Memory
Feature Set
Memory
Options
Host Interface Host Interface
Data/fax/voice
CL-MD5650
CL-MD5652
CL-MD5662T
CL-MD5651T
CL-MD5653T
CL-MD5663T
Data/fax/voice
with speakerphone
two 256K ´ 8;
32K ´ 8;
25 ns
two 32K ´ 8;
70 ns
12 ns
Data/fax/voice with
ITU-V.70 DSVD
upgrade option and
speakerphone
COMPLETE DESIGN GUIDELINES
19 modes related to voice features. Seven of these
modes provide basic voice features and three modes
support DSVD operation.
Reference Designs Available
Cirrus Logic provides reference designs for use and
modiÞcation by customers. These designs demonstrate
chipset applications for several common configurations.
The design documentation includes schematics, bills of
materials, fabrication drawings, and MS-DOSÐ or Win-
dowsâ-based OrCADâ Þles.
Minimal-Component Design
Besides the SRAM and ßash or ROM components listed
above, only a single crystal and 2 Kbytes of NVRAM
(non-volatile RAM) are required to complete the de-
signs. No additional components are needed to add ISA
bus interface, plug-and-play, speakerphone, or DSVD
features.The I/O interface circuit does require relay sup-
port for Caller ID and telephony features.
Simple Software Upgrades
End users can easily download and install upgrades of
56K software from manufacturer-supported Internet
sites. The use of ßash memory permits these Þeld up-
grades. Additional program memory is required to sup-
port the 32 Kbytes of RAM needed for 56K operation
and a full feature set.
Reduced EMI/RFI Emissions
A single crystal serves as a clock for both the controller
and DSP in the CL-MD56XX chipsets. Besides reducing
cost, the single-crystal design minimizes high-frequen-
cy harmonics and simpliÞes EMI/RFI design consider-
ations.
Complete Telephony Interface Design
A proprietary telephone interface design is included in
each reference design provided to all Cirrus Logic cus-
tomers. The telephony interface supports Caller ID and
CL-MD56XX
56K Data/Fax/Voice Chipsets
DESIGN KITS AND SUPPORTING DOCUMENTATION
The following table details the contents of reference design kits and documentation.
Kit / Document
Contents
● ISA half card
56K ISA Half Card Kit
● CL-MDK56XX-XX Applications Book
● Commercial software
MDK56SPD-2IXX
Includes international DAA interface and an
audio/voice hardware interface
● Modem utilities disk (including .INF Þle and drivers)
● ISA combo card
56K ISA Combo Card Kit
MDK56A37-1CXX
Based on CrystalÕs CS4236 audio solution
● CL-MDK56XX-XX Applications Book
● Audio and communication drivers
● Commercial software
● Modem utilities disk (including .INF Þle and drivers)
● PC Card
56K PC Card (PCMCIA) Kit
MDK56-0PXX
Includes Caller ID and all voice features,
including DSVD on a headset interface
● Interface cable
● CL-MDK56XX-XX Applications Book
● Commercial software
● Modem utilities disk (including .INF Þle and drivers)
● Serial PC Card
56K Serial Box Modem Kit
MDK56SPD-5SXX
Includes Caller ID and all voice features,
including DSVD
● CL-MDK56XX-XX Applications Book
● Commercial software
● Modem utilities disk (including .INF Þle and drivers)
● CL-MDK56XX Data Book
● CL-MD56XX Programmer's Guide
● Support documentation:
Ñ Demonstration Board Design Considerations Application Alert
Ñ CL-MDK56SPD-2I01 Half Card 56K
Hardware Application Note
Ñ CL-MDK56A37-1C01 ISA 56K Combo Card
Hardware Application Note
Ñ CL-MDK56-OP01 PC Card 56K
Hardware Application Note
Ñ CL-MDK56SPD-5SXX Serial Box 56K Modem
Hardware Application Note
CL-MDK56XX-XX
Applications Book
Ñ Use of Microphones with V.34 FastPathä Chipsets
Ñ Modem PCB Layout Guidelines
â
Ñ Windows 95 .INF File UserÕs Guide
Ñ 56K Upgrading Instructions
Ñ Installation Instructions for the International Configuration Utility
Ñ Class 1 Fax Application Note
Ñ IS-101 Voice Application Note
NOTE: For information on availability, please contact your local Cirrus Logic representative.
CL-MD56XX
56K Data/Fax/Voice Chipsets
ORDERING INFORMATION
Chipset Composition
The following table gives a brief description of each chipset and a list of its parts.
Parallel/Serial
Host Interface
PC Card
Host Interface
Market
CL-MD5650
CL-MD5651T
Data/fax/
voice
SAFE
CL-MD1724
SAFE
CL-MD1724T
mP
DSP
mP
DSP
CL-MD4450C CL-MD5650D
CL-MD4451C CL-MD5651DT
CL-MD5652
CL-MD5653T
Data/fax/
voice,
full-duplex
speaker-
phone
SAFE
CL-MD1724
SAFE
CL-MD1724
SAFE
SAFE
mP
DSP
mP
DSP
CL-MD4450C CL-MD5650D
CL-MD4451C CL-MD5651DT
CL-MD1724T CL-MD1724T
Data/fax/
voice,
CL-MD5662T
CL-MD5663T
full-duplex
speaker-
phone,
SAFE
SAFE
SAFE
SAFE
mP
DSP
DSP
CL-MD5660DT
mP
CL-MD4451C
DSVD
CL-MD4450C CL-MD5660DT CL-MD1724T CL-MD1724T
CL-MD1724T CL-MD1724T
Part IdentiÞcation
CL Ð MDXXXXXX Ð SC Ð A
Device Revision Level
Cirrus Logic Inc.
Temperature Range:
Modem, Data Communications
C = Commercial
Package Type:
Device Number:
MD5650D
MD5651DT
MD5660DT
S = SQFP (shrink quad ßat pack)
V = VQFP (very-tight-pitch quad ßat pack)
CL-MD56XX
Preliminary Product Bulletin
Direct Sales OfÞces
Irving, TX
TEL: 972/252-6698
FAX: 972/252-5681
JAPAN
International
Domestic
Tokyo
TEL: 81/3-3340-9111
FAX: 81/3-3340-9120
CHINA
Beijing
TEL: 86/10-642-807-83-5
FAX: 86/19-672-807-86
N. CALIFORNIA
Fremont
TEL: 510/623-8300
FAX: 510/252-6020
Houston, TX
TEL: 281/257-2525
FAX: 281/257-2555
KOREA
Seoul
TEL: 82/2-565-8561
FAX: 82/2-565-8565
FRANCE
S. CALIFORNIA
Westlake Village
TEL: 805/371-5860
FAX: 805/371-5861
NORTHEASTERN
AREA
Paris
TEL: 33/1-48-12-2812
FAX: 33/1-48-12-2810
Andover, MA
SINGAPORE
TEL: 65/743-4111
FAX: 65/742-4111
TEL: 508/474-9300
FAX: 508/474-9149
GERMANY
Herrsching
TEL: 49/81-52-92460
FAX: 49/81-52-924699
NORTHWESTERN AREA
Portland, OR
TEL: 503/620-5547
FAX: 503/620-5665
SOUTHEASTERN
AREA
Raleigh, NC
TEL: 919/859-5210
FAX: 919/859-5334
TAIWAN
Taipei
TEL: 886/2-718-4533
FAX: 886/2-718-4526
HONG KONG
Tsimshatsui
TEL: 852/2376-0801
FAX: 852/2375-1202
SOUTH CENTRAL
AREA
Austin, TX
TEL: 512/255-0080
FAX: 512/255-0733
UNITED KINGDOM
London, England
TEL: 44/1727-872424
FAX: 44/1727-875919
Boca Raton, FL
TEL: 407/241-2364
FAX: 407/241-7990
ITALY
Milan
TEL: 39/2-3360-5458
FAX: 39/2-3360-5426
The Company
Headquartered in Fremont, California, Cirrus Logic is a leading manufacturer of advanced integrated circuits for
desktop and portable computing, telecommunications, and consumer electronics. The Company applies its system-
level expertise in analog and digital design to innovate highly integrated, software-rich solutions.
Cirrus Logic has developed a broad portfolio of products and technologies for applications spanning
multimedia, graphics, communications, system logic, mass storage, and data acquisition.
The Cirrus Logic formula combines innovative architectures in silicon with system design expertise. We deliver
complete solutions Ñ chips, software, evaluation boards, and manufacturing kits Ñ on-time, to help you win in the
marketplace.
Cirrus LogicÕs manufacturing strategy ensures maximum product quality, availability, and value for our
customers.
Talk to our systems and applications specialists; see how you can beneÞt from a new kind of semiconductor
company.
Copyright ã 1997 Cirrus Logic Inc. All rights reserved.
Preliminary product information describes products that are in production, but for which full characterization data is not yet available. Cirrus Logic Inc. has
made best efforts to ensure that the information contained in this document is accurate and reliable. However, the information is subject to change without
notice. No responsibility is assumed by Cirrus Logic Inc. for the use of this information, nor for infringements of patents or other rights of third parties. This
document implies no license under patents, copyrights, or trade secrets. Cirrus Logic, AccuPak, Clear3D, DirectVPM, DIVA, FastPath, FasText,
FeatureChips, FilterJet, Get into it, Good Data, Laguna, Laguna3D, MediaDAC, MotionVideo, RSA, SimulSCAN, S/LA, SMASH, SofTarget, Systems in
Silicon, TextureJet, TVTap, UXART, Video Port Manager, VisualMedia, VPM, V-Port, Voyager, WavePort, and WebSet are trademarks of Cirrus Logic Inc.,
which may be registered in some jurisdictions. Other trademarks in this document belong to their respective companies. CRUS and Cirrus Logic
International, Ltd. are trade names of Cirrus Logic Inc.
Cirrus Logic Inc.
3100 West Warren Ave., Fremont, CA 94538
TEL: 510/623-8300 FAX: 510/252-6020
Publications Ordering: 800/359-6414 (USA) or 510/249-4200
World Wide Web: http://www.cirrus.com
555699-002
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