参数资料
型号: GT-48212
厂商: Galileo Technology Services, LLC
英文描述: Advanced Switched Ethernet Controllers for 10+10/100 BaseX(高级交换式 10+10/100 BaseX以太网控制器)
中文描述: 先进的交换式以太网控制器的10 10/100 BaseX(高级交换式10 10/100 BaseX以太网控制器)
文件页数: 115/135页
文件大小: 1619K
代理商: GT-48212
GT-482xx Switched Ethernet Controllers for 10+10/100 BaseX
GALI
LEO
TECHNOLOGY
CONFI
D
ENTI
AL
--
DO
NOT
REPRODUCE
80
Revision 1.2
17.
SDRAM INTERFACE
The GT-482xx includes all of the logic needed for a glueless interface to 1-4 megabytes of synchronous DRAM or
synchronous graphics RAM. (SGRAM is supported because of the lower density that allows the creation of
1Mbyte arrays.) The SDRAM interface runs at the switching core frequency as determined by AClk. Speeds up to
66MHz are supported. Refresh is handled automatically by the GT-482xx as well.
17.1
DRAM Configuration
The user can set the DRAM refresh time according to Table 54, “DRAM Configuration, Offset: 0x1448,” on
page 101. The Cas and Ras parameters can be set as shown in Table 55, “DRAM Parameters, Offset: 0x144C,”
17.2
DRAM Initialization
The GT-482xx automatically resets all Address Tables after reset deassertion. For 1 Mb DRAM mode the process
takes 50,000 AClk cycles, for 4 Mb DRAM mode the process takes 200,000 AClk cycles. During Address Table
reset the GT-482xx will not accept any incoming packets. The GT-482xx automatically initializes the SDRAM after
reset. This initialization process can be performed by the CPU using the DRAM configuration registers.
相关PDF资料
PDF描述
GT-64010A System Controller with PCI Interface for R4XXX/ R5000 Family CPUs(带PCI接口用于R4XXX/ R5000 系列 CPUs的系统控制器)
GT-64012 Secondary Cache Controller For the MIPS R4600/4650/4700/5000,(用于MIPS R4600/4650/4700/5000处理器的二级高速缓存控制器)
GT-64111 System Controller for RC4640, RM523X and VR4300 CPUs(用于RC4640, RM523X和 VR4300 CPUs的系统控制器)
GT-96100A Advanced Communication Controller That Handles a Wide Range of Serial Communication Protocols,such as Ethernet,Fast Ethernet,and HDLC(通信协议的高级通信协议(以太网、快速以太网、HDLC)控制器)
GT5-2/1S-HU RECTANGULAR CONNECTOR
相关代理商/技术参数
参数描述
GT48212-A6-PBB1C000 制造商:Marvell 功能描述:
GT48212-A6-PBB-C000 制造商:Marvell 功能描述:12 PORT E + 2 PORT FE SWITCH (MANAGED) - Trays
GT48300-A1-BBE1C083 制造商:Marvell 功能描述:Marvell GT48300-A1-BBE1C083
GT48300-A1-BBE-C000 制造商:Marvell 功能描述:Marvell GT48300-A1-BBE-C000
GT48300-A1-BBE-C08 制造商:Marvell 功能描述:MVLGT48300-A1-BBE-C083 4 PORT 83MHZ G.LI