Description

The low-power high-performance CS89712 is designed for ultra-low-power communication applications such as VoIP telephones, industrial control, data acquisition, special purpose servers and RF to Ethernet bridges. The core-logic functionality of the device is built around an ARM720T processor with 8 Kbytes of four-way set-associative unified cache and a write buffer. Incorporated into the ARM720T is an enhanced memory management unit (MMU) which allows for support of sophisticated operating systems like embedded Linux.

The CS89712 Ethernet port includes on-chip RAM and 10BASE-T transmit and receive filters.

Features

● ARM720T (ARM7 TDMI) processor

– 8 Kbytes of four-way set-associative cache

– MMU with 64-entry TLB

– Write Buffer

– Thumb code support enabled

● Dynamically clocked at 18, 36, 49 or 74 MHz

● 10 Mbit Ethernet Controller with integrated PHY

● Comprehensive Suite of Software Drivers

● On-Chip Transmit and Receive RAM Buffers

● 10BASE-T Port with Analog Filters provides automatic polarity detection and correction

● Programmable Transmit Features:

– Automatic Re-transmission on Collision

– Automatic Padding and CRC Generation

● Programmable Receive Features:

– Early Interrupts for Frame Pre-Processing

– Automatic Rejection of Erroneous Packets