Part # Brief ST20138 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: USB ADSL chipset: ST70138 + MTC20174 for ultra low-cost ADSL modem

Part Details:

ST20138 Unicorn II USB ADSL modem chipset: ST70138 + MTC20174 for ultra-low-BOM ADSL modem designs Data Brief Description The Unicorn II chipset consists of the ST70138 digital chip and the MTC20174 analog front end Performance, cost and time to market are key with integrated line driver. factors in DSL modem development. The ST70138 is supplied in two packages, The Unicorn II chipset has been designed with all LBGA80 and TQFP144. The ST70138T, these care-abouts in mind, providing CPE packaged in TQ144, is pin-compatible to the manufacturers with a complete and extremely ST70137 legacy ADSL USB chipset, enabling cost-effective solution for ADSL USB modems manufacturers to benefit directly from the cost operating under a variety of operating systems, and performance advantages that the ST70138 such as Microsoft WindowsTM, Mac OS and Linux. brings. The controller-less architecture of the Unicorn II Supplied in a compact LBGA80 package, the and the fact that it does not require an external ST70138B brings additional cost advantages to SDRAM, make its external bill-of-materials (E- new designs. BOM) best-in-class. Thanks to its small form factor packages and an external component count The MTC20174 has been designed for use in of less than 140, the Unicorn II easily fits on a DMT-based ADSL CPE modems than comply with small-dimension standard 2-layer single-sided ANSI T1.413 issue 2, ITU G.992.1 (G.dmt) PCB which further reduces overall system cost. andITU G.992.2 (G.lite), for Annex A and B, and Combining low power consumption, high-speed the DT U-R2 specification. performance (up to 8 Mbps), field-proven driver software and customizable user interface, the Unicorn II is the ideal choice for cost-conscious equipment manufacturers, telecom operators/ISPs and ADSL users alike. Figure 1. Chipset architecture overview ST70138 MTC20174 DMT engine + Line Interface AFE USB controller USB Phone Line PC/Mac EEPROM (0-16KB) PC00120 March 2007

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Brief ST20138.pdf Datasheet