參數(shù)資料
型號(hào)： ICSXXXXY
英文描述： Auto-Negotiation Advertisement Register (register 4 [0x04])
中文描述： 自動(dòng)談判廣告登記（注冊(cè)4 [0x04]）
文件頁(yè)數(shù)： 27/66頁(yè)
文件大小： 1725K
代理商： ICSXXXXY
27
ICS1890
Auto-Negotiation Link Partner Ability Register (register 5
[0x05]
)
Auto-Negotiation Link Partner Ability
Register (register 5)
The Auto-Negotiation link partner ability register is a 16-bit
read-only register used to indicate the abilities of the link
partner. When compared to local abilities in register 4 and
sorted by the standard IEEE priority table the highest possible
performance link can be determined. Note that the values in
this register are only valid when Auto-Negotiation is complete
as indicated by (1:5) or the equivalent bit in the QuickPoll
register.
Next Page (bit 15)
If set to a logic one, this bit indicates that the link partner can
operate in the next page mode. Since the
ICS1890
does not
support the next page function, no action or response results
from this indication.
Reserved (bit 14)
This reserved bit will always be returned as a logic zero.
Remote Fault (bit 13)
When the remote fault bit of the Link Code Word is set to a
logic one, the
ICS1890
sets the remote fault bit in the Link
Partner Ability Register to a logic one. This indicates that the
link partner has detected an error.
Technology Field (bits 12:5)
This 8-bit field specifies the data transmission technologies
supported by the remote partner. The contents are valid on
successful completion of Auto-Negotiation as indicated by a
logic one in bit 5 of the
ICS1890
status register.
Selector Field (bits 4:0)
This 5-bit field indicates the technology supported by the link
partner. A valid IEEE 802.3 link partner will always signal
( 00001). A code of ( 00010) indicates an IEEE 802.9a partner.
All other codes are currently undefined.
Bit
Definition
When bit=0
When bit=1
partner supports next
page exchange
Access
Default
Hex
15
Next Page
partner does not support
next page exchange
always 0
RO
0
0
14
Reserved by IEEE
RO
0
13
Remote Fault
no fault
a fault has occurred at
the remote link partner
RO
0
12
Technology Ability Field
bit A7
Technology Ability Field
bit A6
Technology Ability Field
bit A5
TAF bit A4: 100Base-T4
Capability
reserved by IEEE
RO
0
11
reserved by IEEE
RO
0
0
10
reserved by IEEE
RO
0
9
partner does not support
100Base-T4
partner does not support
100Base- TX Full
Duplex
partner does not support
100Base- TX Half
Duplex
partner does not support
10Base-T Full Duplex
partner does not support
10Base-T Half Duplex
see decode table
see decode table
see decode table
see decode table
see decode table
partner supports
100Base-T4
partner supports
100Base- TX Full
Duplex
partner supports
100Base- TX Half
Duplex
partner supports
10Base-T Full Duplex
partner supports
10Base-T Half Duplex
RO
0
8
TAF A3: 100Base-TX
Full Duplex Capability
RO
0
7
TAF A2: 100Base-TX
Half Duplex Capability
RO
0
0
6
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
RO
0
5
RO
0
4
3
2
1
0
RO
RO
RO
RO
RO
0
0
0
0
0
802.3 = 00001
802.9 = 00010
0
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