MTC50150

2/20

Figure 2. Block diagram

3

DESCRIPTION

The MTC50150 is a low cost ADSL bridge and LAN router. One 10/100Mbits Ethernet port allows the con-

nection of a LAN to the WAN in bridged or routed mode. The data traffic can be routed through a local

terminal by using the LAN port. The presence of NAT and DHCP and the API slots for firewall functions

allow for a high-speed connection of LAN connected devices, like PC, to the public Internet in an isolated

and secure environment.

The chip is built around an ARM946ES RISC processor. It embeds a complete ADSL transceiver and LAN

interfaces with an MII allowing multiple medium utilization. A comprehensive software package is available

with the SOC solution, which has been developed with customization in mind. Several software license

plans are available as well as a user friendly development environment.

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HARDWARE DESCRIPTION

The MTC50150 processor combines a DynaMiTe™ ADSL transceiver with a dedicated ARM946ES RISC

processor. To maintain high data throughput, the RISC processor includes 16Kbyte cache memory for

programming and 16Kbyte memory for data. Processing of most of the layer 2 protocols on the ATM (SAR

and AAL) and IP (Mac filter and bridge) sides are performed by specific hardware blocks, relieving the pro-

cessors from these tasks. The chip provides minimal external components and maximum flexibility. In ad-

dition, it contains one Ethernet 10/100 Base-T MAC and the exposed MII interface allows the connection

to alternate LAN mediums like HPNA, WLAN, and HPLUG. The MTC-50150 device is targeted for low-

cost residential gateways. Its primary design goal is to minimize cost. Secondary design goals are:

– Low system cost using a reduced BOM and optimized SOC technology

– Low power to facilitate primary service capabilities and thermal system issues

– Low EMI to simplify packaging and qualification of systems

PLL

APB BRIDGE

ISA

(FLASH)

COMMUNICATION

CONTROLLER

ARM946ES

DMA

SDRAM INTERFACE

ROM

JTAG

UART

GPIO

10/100

BRIDGE &

MAC

ADSL

DMT-U

AAL5

SAR

D02TL543