ksz8695x

Product Summary

The CENTAUR KSZ8695X is a cost-effective, high-performance router-on-a-chip solution for Ethernet-based systems. It integrates a powerful processor with a 5-port switch that consists of five MAC units, five physical layer transceivers(PHYs), DMA engines, and hardware protocol engines for CPU off loading.The KSZ8695X is built around the 16/32-bit ARM922T RISC processor. The ARM922T is a scalable, high-performance,microprocessor developed for highly integrated system-on-a-chip applications. The KSZ8695X offers an 8KB I-cache andan 8KB D-cache to reduce memory access latency for high-performance applications. There are also SDRAM, SRAM,and ROM interfaces with configurable bus speeds and data width. The KSZ8695X provides external I/O interfaces, a UARTinterface, ageneral purpose I/O, a JTAG debugging port, an internal interrupt controller, and internal timers.The KSZ8695X contains independent DMA engines for the WAN and LAN. Each of the independent DMA engines supportsburst mode as well as little-endian byte ordering for memory buffers and descriptors. Each DMA engine contains one 3KBreceive FIFO and one 3KB transmit FIFO to ensure back-to-back packet reception and no under-runs on packettransmission.

Parametrics

ksz8695x absolute maximum ratings: (1)Supply Voltage: (VDDAR,VDDA_PLL,VDD_CORE) –0.5V to +2.4V; (VDDAT,VDD_IO) –0.5V to +4.0V; (2)Input Voltage (all inputs): –0.5V to +4.0V; (3)Output Voltage (all outputs): –0.5V to +4.0V; (4)Lead Temperature (soldering, 10sec.): 270°C; (5)Pb (Lead) Free Temperature (soldering, 10sec.): 260°C; (6)Storage Temperature (Ts): –55°C to +150°C.

Features

ksz8695x features: (1)The CENTAUR KS8695X featuring XceleRouter technology is a single-chip multi-port gateway-on-a-chip withall the key components integrated for a high-perfor-mance and low-cost broadband gateway; (2)ARM922T High-Performance CPU Core: ARM922T core at 166MHz; 8KB I-cache and 8KB D-cache; Memory management unit (MMU) for Linux andWinCE2; 32-bit ARM and 16-bit thumb instruction sets for smaller memory footprints; (3)XceleRouter Technology; TCP/UDP/IP packet header checksum generation tooffload CPU tasks; IPv4 packet filtering on checksum errors; Automatic error packet discard.

Diagrams