参数资料
型号: GT-48208
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: 119/135页
文件大小: 1619K
代理商: GT-48208
GT-482xx Switched Ethernet Controllers for 10+10/100 BaseX
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TECHNOLOGY
CONFI
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Revision 1.2
18.1
Register Description
Table 22: Base Address, Offset: 0x00
B i t s
Field N a m e
Funct ion
Init ia l Va lue
31:27
BaseAddress
Device Base Address
DAddr[4:0] at reset
26:0
Reserved
0x0
Table 23: Global Control, Offset: 0x04
B i t s
Field N a m e
Funct ion
Init ia l Va lue
0
SwReset
Software Reset
1
0 - No effect
1 - Reset all internal units except for the CPU unit to
their initial state
0x0
1
AgingTrigger
Aging Trigger (only valid if 3:2 are written ‘10’). When
this bit is changed from low to high, the GT-482xx will
scan the Address Table and age out (remove old
addresses)
CPU should clear this bit.
NOTE: If Aging Mode is set to trigger mode and this
bit is set to ‘1’ and is not cleared, it is equivalent to
automatic aging mode.
0x0
3:2
AgingMode
Aging mode:
00 - No Aging support
01 - Automatic aging
10 - Trigger mode
11 - Reserved
0x01
4
Learning
Address MAC Learning Mode
0 - Mode 0
1 - Mode 1
In most applications, this bit does not need to be
changed. Designers of managed systems may want
to experiment with this bit to improve address learn-
ing performance.
Initial Value should be 0x1 for P-0/1/2 and 0x0 for P-
3/4.
0x1 for P-0/1/2
0x0 for P-3/4
5
ForwUnk
Forward Unknown Packets.
Defines whether the GT-482xx will forward Unknown
packets to the CPU or not.
0 - Do not forward to CPU
1 - Forward to CPU
Note: For exact description see "Address Recogni-
0x0
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