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: 29/101页
文件大小: 1235K
代理商: GT-48001A
GT-48001A Switched Ethernet Controller
Revision 1.6
33
10.2
GalNet Messages Between Devices
The five groups of GalNet messages as described in the sections below are sent from one GalNet device to another.
The data format for all GalNet messages is
little-endian, which is the PCI standard.
10.2.1 NEW_ADDRESS Message between GalNet devices
A message sent from one GalNet device to another to alert of a new address.
The NEW_ADDRESS message may also be posted as a 'question' to other GalNet devices during the recovery pro-
cess (see Section 4.2 on page 16). The indication is via the Address Unknown/New Address bit (bit 29). If bit 29 is
clear, then the NEW_ADDRESS message is a 'question'. When bit 29 is set, the message indicates a 'real' address to
put into the target devices’ address tables.
The NEW_ADDRESS message must be transferred in a burst of three words over the PCI.
Table 6: NEW_ADDRESS Message between GalNet devices
PCI Bi t s
De scr ipt i on
Address
[31:27]
[26:22]
[21]
[20:18]
[17:0]
GalNet Protocol Region
Target Device Number
‘0’ (Internal registers)
‘100’ (NEW_ADDRESS message)
‘0’
Data 0
[31:3]
[2]
[1]
[0]
MAC address [19:47]
Aging
Skip
Valid
Data 1
[31]
[30]
[29]
[28]
[27]
[26:24]
[23:19]
[18:0]
‘1’
Static
Address Unknown/New address
Multiple
‘0’
Port Number
Device Number
MAC address [0:18]
Data 2
[24]
[25]
Intervention mode for Destination Address
Intervention mode for Source Address
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