In this paper, an access network controller for ADSL (Asymmetric Digital Su
bscriber Line) access is described. It consists of a Vr4120 MPU core, a sys
tem controller, an Ethernet double dagger controller, an ATM (Asynchronous
Transfer Mode) cell processor, a USE (Universal Serial Interface) controlle
r and other blocks. This controller, along with ADSL PHY devices, can provi
de a total solution for ADSL modem and ADSL router.