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ST20138 Arkusz danych(PDF) 3 Page - STMicroelectronics |
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ST20138 Arkusz danych(HTML) 3 Page - STMicroelectronics |
3 / 6 page 3/6 ST70138 September 2004 This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice. 4 HARDWARE FEATURES ■ SUPPORT DIGITAL SIGNAL PROCESSING REQUIREMENTS FOR ONE ADSL CPE CHANNEL (ITU-R) ■ COMPLIANT WITH ITU 992.1 (ADSL FULL RATE) ANNEX A (ADSL OVER POTS), ANNEX B (ADSL OVER ISDN), ITU 922.2 (G.LITE) AND ANSI T1.413. ■ ENHANCED FTP TRANSFER CAPABILTIES ■ DIRECT INTERFACE TO USB (USB RELEASE 1.1 SPECIFICATION) ■ DIRECT INTERFACE TO EXTERNAL 8/16bit SERIAL MEMORY TO SUPPORT USB USER'S CONFIGURATION. ■ DIRECT ANALOG FRONT END INTERFACE FOR MTC20174 ■ CLOCK & RESET INTERFACE ■ 1.8V AND 3.3V POWER SUPPLY ■ TTL LOGIC LEVELS COMPATIBLE ■ POWER MANAGEMENT CAPABILITIES ■ LOW POWER CONSUMPTION : MAX 0.45W ■ TQFP144 (ORDER CODE ST70138T - BACKWARD COMPATIBLE WITH PREVIOUS ST70137) ■ LFBGA80 (ORDER CODE ST70138B) 5 DESCRIPTION Unicorn II is an evolution of the field-proven and mass deployed Unicorn modem that dramatically lowers the overall system cost when designing and producing a USB ADSL modem. The Unicorn II chipset is designed using cost effective CMOS technology, further integrating external compo- nents which leads to even lower E-BOM costs, re- duced component count and lower PCB complexity; All of this while increasing overall per- formance. Its proven controller-less and SDRAM- less architecture is highly competitive and well suited in today's cost focused modem market. The Unicorn II chipset is designed to simplify the development of low-cost ADSL CPE modems for Windows, Mac and Linux based environments and enables manufacturers to achieve a very compet- itive production cost. Due to its controller-less ar- chitecture and particularly the advantage that it does not require an external SDRAM in its E-BOM, the total cost of the external components needed in the modem is the best in its class. With a low component count of less then 140 external compo- nents and small form factor packages, the Unicorn II easily fits on a standard 2 layer single sided PCB with small dimensions which is contributes signifi- cantly to further lowering overall system costs. To- gether with its low power consumption, high- speed performance up to 8 Mbps and customiz- able complete software driver packages, the Uni- corn II is the ideal choice for USB based ADSL modems. The ST70138T/B is the ADSL DMT transceiver chip of the UNICORN2™ Chipset. ST70138T in intended to be used as a pin-to-pin replacement part of the ST70137 device in order to get advantage from its better cost-structure and its enhanced FTP transfer capabilities. ST70138T is packaged in a TQ144 package. Full backward compatibility with already existing USB PCB de- signs is assured. ST70138B, packaged in LFBGA80 is intended for new PCB designs, which will benefit from exten- sive E-BOM reduction in the reference design, mass production friendly EEPROM programma- tion, enhanced FTP throughput and overall lower system cost structures. Eleven years of experience have enabled ST to de- velop a chipset that offers full compatibility with all current full-rate and G.lite ADSL standards, USB standards including plug-and-play support. The Uni- corn II chipset has a comprehensive driver suite that supports Windows operating systems from 98 to XP, Mac operating systems 8 to X and Linux. The Unicorn is fully interoperable with all major DSLAMs and is compliant to TR-048 (DSLforum) and ETSI 101 388 performance requirements. DATA BRIEF UNICORN II™ USB CONTROLLERLESS ADSL DMT TRANCEIVER Figure 2. Packages Table 1. Order Codes Part Number Package ST70138T TQFP144 ST70138B LFBGA80 TQFP144 LFBGA80 |
Podobny numer części - ST20138 |
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Podobny opis - ST20138 |
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