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MD567X
USB V.90 Modem Chipset for Mac & Windows

The MD567X is a controller-based modem chipset featuring a USB interface. This ITU-V.90 56K solution provides a complete set of industry-standard data, fax and voice features. The MD567X interfaces to the host on a USB bus utilizing the National Semiconductor‚ USBN9602 USB node controller. Power is supplied by the USB bus eliminating the need for a power adapter. All this makes the MD567X a low-cost, high-speed serial solution.

MD567X 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

USB

• USB Specification v1.0-compliant

PC telephony

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

Power requirements

• +5-V power source supplied by USB bus
• 3.3-V DSP
• Automatic sleep and wake-up modes

Packaging

• Controller and DSP: 128-pin MQFP
• SAFE: 44-pin LQFP
• National^® USBN9602 28-pin SOIC package

Exceeds Microsoft^® PC 98 requirements

Apple^® Mac OS 8.5 (and higher) support

Microsoft^® Windows^® TAPI-compliant

Industry-standard AT command-driven

*maximum speed allowed by the FCC is 53.333 kbps.