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參數(shù)資料
| 型號： | ICSXXXXY |
| 英文描述： | Auto-Negotiation Advertisement Register (register 4 [0x04]) |
| 中文描述： | 自動談判廣告登記（注冊4 [0x04]） |
| 文件頁數(shù)： | 25/66頁 |
| 文件大?。?/td> | 1725K |
| 代理商： | ICSXXXXY |
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ICS1890
Auto-Negotiation Advertisement Register (register 4
[0x04]
)
Auto-Negotiation Advertisement Register
(register 4)
The Auto-Negotiation advertisement register is a 16-bit read/
write register used to indicate the basic capabilities of the
local device. The values written into this register are exchanged
with the remote link partner to determine the best link technol-
ogy to enable. Normally it is desirable to advertise all of the
capabilities supported by a node. In some cases a certain
technology is not desired and in this case the corresponding
bit can be set to logic zero. If a connection cannot be made in
this case, management should enable all of the capabilities
possessed and restart Auto-Negotiation.
Next Page (bit 15)
The
ICS1890
does not support the next page function. This bit
is permanently set to a logic zero.
Reserved by IEEE (bit 14)
This reserved bit has no effect on the
ICS1890
. When read,
a logic zero is always returned.
Bit
Definition
When bit=0
When bit=1
Access
Default
Hex
15
Next Page
always 0 - not capable of
sending next pages
always 0
no fault
reserved by IEEE
reserved by IEEE
reserved by IEEE
always 0 - 100Base-T4 not
supported
RO
0
0
14
13
12
11
10
Reserved by IEEE
Fault Indication to link partner
Technology Ability Field bit A7
Technology Ability Field bit A6
Technology Ability Field bit A5
RO
RW
CW
CW
CW
0
0
0
0
0
a fault has occurred locally
1
9
TAF bit A4: 100Base-T4 Capability
RO
0
8
TAF A3: 100Base-TX Full Duplex
Capability
TAF A2: 100Base-TX Half Duplex
Capability
TAF A1: 10Base-T Full Duplex
Capability
TAF A0: 10Base-T Half Duplex
Capability
Selector Field bit S4
Selector Field bit S3
Selector Field bit S2
Selector Field bit S1
Selector Field bit S0
100Base-TX FD not desired
100Base-TX FD supported
RW
1
7
100Base-TX HD not desired 100Base-TX HD supported
RW
1
E
6
10Base-T FD not desired
10Base-T FD supported
RW
1
5
10Base-T HD not supported
10Base-T HD supported
RW
1
4
3
2
1
0
IEEE 802.3 default
IEEE 802.3 default
IEEE 802.3 default
IEEE 802.3 default
IEEE 802.3 default
CW
CW
CW
CW
CW
0
0
0
0
1
1
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