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CX11627-11 数据表(PDF) 7 Page - Synaptics Incorporated. |
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CX11627-11 数据表(HTML) 7 Page - Synaptics Incorporated. |
7 / 56 page AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 1-1 1. Introduction 1.1 Overview The Conexant AccessRunner ADSL-USB Modem Device Set combines an “always-on” high speed Asymmetric Digital Subscriber Line (ADSL) connection to the telephone line, and Universal Serial Bus (USB) connection to a host PC into a single cost-effective solution. Conexant’s AccessRunner ADSL modem device set is compliant with the full-rate ANSI T1.413 Issue 2 and ITU G.dmt (G.992.1) ADSL standards, and with the splitterless ITU G.lite (G.992.2) specification. This rate-adaptive solution is designed for Customer Premise Equipment and supports downstream data rates of up to 8 Mbps and upstream data rates of up to 1 Mbps. The device set takes advantage of the processing power available with today’s computers by eliminating the need for a separate ATM Segmentation and Reassembly (SAR) device, resulting in a cost-effective solution suitable for both full rate and G.lite applications. Additionally, host-based software provides support for current industry standards for PPP over ATM (RFC 2364) and bridged Ethernet over ATM (RFC 1483) for Windows 98 and Windows 2000. The USB specification version 1.1 is supported and is the preferred standard method to connect peripherals to PCs. During periods of no data transmission, the Conexant ADSL DMT data pump performs idle cell insertion and deletion thus unloading this task from the host PC. The device set consists of four devices (see Figure 1-1 and Figure 1-2): • USB Interface Controller (UIC), part no. P5200, in a 176-pin TQFP • ADSL DMT Data Pump (ADDP), part no. CX11627, in a 176-pin TQFP • Analog Front End (AFE), part no. CX20431, in a 32-pin TQFP • Line Driver (LD), part no. CX20441, in a 32-pin TQFP ADSL (Asymmetric Digital Subscriber Line) is a transmission technology used to carry user data over a single twisted pair line between the Central Office and the Customer Premises. The downstream (Central Office to Customer Premises) direction typically supports a much higher data rate than the upstream or return (Customer Premises to Central Office) channel. This asymmetric nature lends itself to applications like remote LAN access, Internet access, and video delivery. The downstream data rates can go up to 8 Mbps. The upstream data rates can go up to 1 Mbps. Actual data rates depend on the transceiver implementation, loop length, impairments, and transmitted power. The Conexant ADSL-USB Modem Device Set is based upon a scalable architecture. This architecture enables the device set to support splitterless G.lite as well as splittered and splitterless full-rate ADSL. G.lite enables telephone companies to deploy consumer-oriented, “always on” 1.5 Mbps Internet access services without the need for splitter equipment, micro-filters, or wiring changes at the customer premises. 1.2 Applications • ADSL Customer Premise Equipment • ADSL USB modems for desktop PCs • ADSL USB modems for notebook PCs P5200 USB Interface Controller (UIC) 176-Pin TQFP CX11627 ADSL DMT Data Pump (ADDP) 176-Pin TQFP CX20431 Analog Front End (AFE) 32-Pin TQFP TIP RING 100428_F1-1_SID USB Interface TELEPHONE LINE CX20441 Line Driver (LD) 32-Pin TQFP Host-Based ADSL Drivers Device Set Figure 1-1. AccessRunner ADSL-USB Modem Device Set Simplified Hardware Interface |
类似零件编号 - CX11627-11 |
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类似说明 - CX11627-11 |
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