参数资料
型号: GT-48001A
厂商: Galileo Technology Services, LLC
英文描述: Switched Ethernet Controller For 10BaseX(10BaseX交换式快速以太网控制器)
中文描述: 交换式以太网控制器10BaseX(10BaseX交换式快速以太网控制器)
文件页数: 90/101页
文件大小: 1235K
代理商: GT-48001A
GT-48001A Switched Ethernet Controller
Revision 1.6
89
21.3
Register Modification Restrictions
Below are two registers for which the port should be disabled before bits are modified by the CPU.
Note that all ports must be disabled before modifying the bits in the Serial Parameters Register.
Table 40: Port Control Register Bit Modification Restrictions (Offset 0x040200 - 0x04021C)
Bit #
Bit Name
Must Disable
Port?
0PortEn
n/a
1FullDx
No
3:2
SerMode
Yes
4MonMode
No
6:5
Reserved- do not modify
n/a
7
AutoPol
No
9:8
Reserved- do not modify
n/a
10
FilBroad
No
11
ForwUnk
No
12
SpanEn
No
13
VTagEn
Yes
Table 41: Serial Parameters Register Bit Modification Restrictions (Offset 0x040220)
Bit #
Bit Name
Must Disable all
Ports?
17:0
Reserved- do not modify
n/a
24:18
IPGData
Yes
31:25
DataBlind
Yes
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