[ Modem-Help ]

MD566X
ISA, Serial PCMCIA -- Advanced DSP Architecture Eliminates Need for External SRAM

The MD566X is an enhancement of the MD565X chipset. Due to advancements in architecture the DSP no longer requires external SRAM. Board size and power consumption have been decreased too. This new technology improves performance and reduces cost. In addition, this software upgradable 56-kbps solution delivers a complete set of industry-standard features for data, fax and voice applications, including full-duplex speakerphone. And it supports ISA, Serial and PCMCIA interfaces

MD566X System Block Diagram

Data modulation

• Data rates up to 56 kbps*
• ITU-V.90 56K compliant
• ITU-T V.34 (33,600 to 2,400 kbps)
• ITU-T V.32 bis, V.23, V.22 bis, V.21
• Bell^® 212A and 103
• Error correction: ITU V.42 and MNP^® 2–4
• Data compression: ITU V.42 bis and MNP^® 5

Fax modulation

• ITU-T V.17, V.29 to 14,400 kbps
• Fax Class 1 commands

ISA

• ISA bus direct or plug and play
• Serial RS-232/V.24 interface
• PCMCIA interface

PC telephony

• International telephony support
• Voice compression: ADPCM, linear, and CL1
• 4800, 7200, 8000, 9600, and 11025 samples/sec.
• Full-duplex, echo-cancelled digital speakerphone
• Telephone emulation for headset applications
• Voice IS-101 commands

Power requirements

• Single +5-V power source; 3.3-V DSP
• Automatic sleep and wake-up modes

Packaging

• Controller and DSP: 128-pin MQFP or LQFP
• SAFE: 44-pin LQFP

Exceeds Microsoft^® PC 98 requirements

Microsoft^® Windows^® TAPI-compliant

Industry-standard AT command-driven

*maximum speed allowed by the FCC is 53.333 kbps.