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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： | 16/135页 |
| 文件大小： | 1619K |
| 代理商： | GT-48212 |
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GT-482xx Switched Ethernet Controllers for 10+10/100 BaseX
GALI
LEO
TECHNOLOGY
CONFI
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ENTI
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DO
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REPRODUCE
112
Revision 1.2
19.
GT-482XX PINOUT DIFFERENCES
Currently all members of the Galaxy Switch Family are “supersocket compatible”. This means that a properly
designed system can accept a GT-48207 (unmanaged 8+2), a GT-48208 (managed 8+2) or a GT-48212 (man-
aged 12+2).
This section describes how to design such a system.
19.1
Pinout Differences between GT-48207, GT-48208, and GT-48212 Devices
The pinout differences between the three Galaxy devices are summarized in Table 64.
19.2
Using a GT-48212 in a GT-48208/7 Socket: Disabling Unused Ethernet Ports
The GT-48208 and GT-48207 do not implement Ethernet port numbers 1, 5, 7 and 11 that are found on the GT-
48212. In GT-48208/7 silicon these ports do not exist so no special “tying off” is required. However, if you need to
use a GT-48212 in a GT-48208/7 socket (using only 8 of the 12 ports) then you MUST properly disable these
ports. Simply following the attached pinout for the GT-48208/7 will disable these ports if a GT-48212 is placed in
the same socket. The pins that are used for receive data for the ports not implemented on the GT-48207/8
(RxdE1,5,7,11) are shown as Vcc (pins 29, 31, 46, and 50). This disables these ports and prevents accidental
clocking when using a GT-48212 in a GT-48208/7 design.
If you wish to build a system that can implement either 12 or 8 Ethernet ports in the same socket, be sure to pull
these pins high through a resistor or jumper. That way you can make it a “stuffing option” to disable the 4 addi-
tional ports or to implement them when a GT-48212 is installed.
Note: The attached pinout for the GT-48208/7 is updated from previous documentation to reflect the “tying off” of
RxdE1/5/7/11. This is the final pinout.
19.3
Using a GT-48212 or GT-48208 in a GT-48207 Socket: Disabling Unused CPU
Interface
A similar situation exists with regards to the CPU interface when using a GT-48212/08 in a GT-48207 socket.
Since the GT-48207 does not implement this interface, if you wish to use a GT-48208/212 in a GT-48207 socket
then you MUST properly disable the CPU interface. Simply following the attached pinout for the GT-48207 will dis-
able the CPU interface if a GT-48208/212 is placed in the GT-48207 socket.
Table 64: Pinout Differences
G a laxy
De v ic e
Funct ions not
implement e d
P ins D e let e d
N ote
GT-48212
N/A
Baseline pinout
GT-48208
Ethernet ports 1, 5, 7
and 11
All pins relating to these
ports
For a GT-48212 to be used in a GT-
48208 socket you must properly dis-
able the four unused Ethernet ports
as described below.
GT-48207
Ethernet ports 1, 5, 7
and 11
Management CPU
interface
All pins relating to the
these Ethernet ports and
the CPU interface
For a GT-48212 to be used in a GT-
48207 socket you must properly dis-
able the four unused Ethernet ports
and disable the CPU interface.
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| 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 |
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