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MD565X
ISA/External 56K V.90 Modem Chip Set

The MD565X is a controller-based modem chipset featuring an ISA interface. This ITU-V.90 56K solution provides a complete set of industry-standard data, fax, and voice features. The MD565X owes its capabilities to the sophisticated architecture of its controller and DSP. This highly integrated design minimizes part count and board area.

MD565X 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.