Realtek DWA User Guide.doc Realtek DWA User’s Guide Revision A Author : Robert Teng Date : 06/03/2007 Realtek Corp. 1 All Rights Reserved by Realtek Corp.
Realtek DWA User Guide.doc Table of Contents 1. Introduction .............................................................................. 3 2. System Description................................................................... 3 2.1. UWB PHY ....................................................................... 4 2.2. NEC MAC ....................................................................... 4 2.3. EEPROM ......................................................................... 4 3.
Realtek DWA User Guide.doc 1. Introduction This document describes the operations, interfaces, schematic and layout of Rev. 2.1 of the NEC DWA Demo Board. The DWA is the hub function device to connect wired USB device with wireless USB host controller. If the upstream port is connected to host PC with USB cable, DWA worked as wired USB Hub device. If DWA upstream port isn’t connected to host PC, DWA can worked as wireless USB Hub device. 2.
Realtek DWA User Guide.doc The RF performance can also be tested using the test utility provided by NEC. Two basic clock frequencies are used in the system – 30MHz for MAC and 66MHz for PHY. Some more details of the components are shown in the following sections. The system block diagram is shown below. Figure 1 System Block Diagram 2.1.UWB PHY This chip integrates the RF and baseband functions of a UWB PHY defined by the standard. This version of PHY chip is packaged in 48-pin QFN form factor.
Realtek DWA User Guide.doc 3. Hardware Interfaces 3.1. USB Interface Table 1 USB series “Mini-B” connector termination assignment Pin# Pin Name Description 1 VBUS See USB specification 2 D- See USB specification 3 D+ See USB specification 4 NC See USB specification 5 GND See USB specification 6 SHELL See USB specification 4. Document History Date 06/03/07 Revision A Description Initial Release Author Robert Teng 5.
Realtek DWA User Guide.doc 6. Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
