User's Manual

Table Of Contents

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. The analog/RF section requires 1.8V and 3.3V to operate. The digital

core operates with 1.5V and the I/O voltage can support a range of 1.8V~3.3V.

2.2. NEC MAC

This MAC chip is from NEC which has a standard MPI interface to

communicate with a standard UWB PHY, as well as a high speed USB

interface(the upstream port) to connect directly to a PC. This chip requires

voltages of 1.5V and 3.3V.

2.3. EEPROM

This chip is a serial EEPROM from Atmel with a capacity of 256Kb. It is used

by the MAC to store the initialization data and command sequence required

by the MAC and PHY on start up. This chip requires 3.3V only.