KS8695X
Micrel
KS8695X
Integrated Multi-Port High-Performance Gateway Solutions
Rev. 1.02
General Description
The CENTAUR KS8695X, Multi-Port Gateway-on-a-Chip,
delivers a new level of networking integration and perfor-
mance for accelerating broadband gateway development.
Key components integrated in the KS8695X include:
鈥?Integrated Layer 2 managed switch with five Fast
Ethernet transceivers and patented mixed-signal low-
power technology, five media access control (MAC)
units, a high-speed non-blocking switch fabric, a dedi-
cated address look-up engine, an on-chip frame buffer
memory, and LED controls. One port is partitioned for
WAN interface with the other four ports for LAN access.
鈥?A 166MHz ARM鈩?(ARM992T) processor with memory
management unit (MMU) and 8KB I-cache and 8KB D-
cache.
鈥?XceleRouter鈩?technology for the WAN and LAN
interfaces.
鈥?Shared programmable 8/16/32-bit data bus and 22-bit
address bus with up to 64MB total memory space for
SDRAM, ROM, Flash, SRAM, and all peripheral de-
vices.
鈥?Other peripheral support logic including GPIO, a watch-
dog timer, an interrupt controller, and a JTAG debug-
ging interface.
Complete hardware and software reference designs are
available.
The KS8695X represents a new level of total solution opti-
mized for broadband gateway system development and
renders speedy routing performance and connectivity inter-
faces for value-added networking expansions.
Functional Diagram
KS8695X
Advanced Memory Controller
External I/O
Controller
FLASH/ROM/
SRAM
Controller
SDRAM
Controller
PLL
JTAG
ARM鈩?/div>
922T
MMU
8KB
I-Cache
Advanced High-Performance Bus (AHB)
8KB
D-Cache
XceleRouter鈩?/div>
APB
Bridge
Switch
Registers
High-Performance
Non-Blocking
5-Port Switch
Advanced Peripheral Bus (APB)
Interrupt
Controller
8 GPIOs
UART
TX/RX
MAC
10/100
PHY
TX/RX
MAC
10/100
PHY
TX/RX
MAC
10/100
PHY
TX/RX
MAC
10/100
PHY
TX/RX
MAC
10/100
PHY
Timer/
Watchdog
XceleRouter is a trademark of Micrel, Inc. AMD is a registered trademark of Advanced Micro Devices, Inc. ARM is a trademark of Advanced RISC Machines Ltd.
Intel is a registered trademark of Intel Corporation. WinCE is a registered trademark of Microsoft Corporation.
Micrel, Inc. 鈥?2180 Fortune Drive 鈥?San Jose, CA 95131 鈥?USA 鈥?tel + 1 (408) 944-0800 鈥?fax + 1 (408) 474-1000 鈥?http://www.micrel.com
October 2004
1
M9999-102604
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