
Agere Systems Inc.
151
Data Sheet
July 2001
T8302 Internet Protocol Telephone
Advanced RISC Machine (
ARM
)
12 Ethernet 10/100 PHY(s)
(continued)
12.5.6 MR4 Autonegotiation Advertisement Register Bit Description
12.5.7 MR5 Autonegotiation Link Partner Ability (Base Page) Register Bit Description
Table 132. MR5 Autonegotiation Link Partner Ability (Base Page) Register Bit Description
Table 131. MR4 Autonegotiation Advertisement Register Bit Description
Bit #
15
Name
Type
R/W
Description
NEXT_PAGE
Next page. The next page function is activated by setting this bit to a 1. This
will allow the exchange of additional data. Data is carried by optional next
pages of information.
Acknowledge.
This bit is the acknowledge bit from the link code word.
Remote fault.
When set to 1, the 10/100 Ethernet transceiver macrocell indi-
cates to the link partner a remote fault condition.
Pause.
When set to a 1, it indicates that the 10/100 Ethernet transceiver
macrocell 10/100 Ethernet transceiver macrocell wishes to exchange flow
control information with its link partner.
100Base-T4.
This bit should always be set to 0.
100Base-TX full-duplex. If written to 1, autonegotiation will advertise that the
10/100 Ethernet transceiver macrocell is capable of 100Base-TX full-duplex
operation.
100Base-TX.
If written to 1 autonegotiation will advertise that the
10/100 Ethernet transceiver macrocell is capable of 100Base-TX operation.
10Base-T full-duplex. If written to 1, autonegotiation will advertise that the
10/100 Ethernet transceiver macrocell is capable of 10Base-T full-duplex
operation.
10Base-T.
If written to 1, autonegotiation will advertise that the 10/100 Ether-
net transceiver macrocell is capable of 10Base-T operation.
Selector field. Reset with the value 00001 for
IEEE
802.3.
14
13
ACK
R/W
R/W
REM_FAULT
12:10
PAUSE
R/W
9
8
100BASET4
100BASET_FD
R/W
R/W
7
100BASETX
R/W
6
10BASET_FD
R/W
5
10BASET
R/W
4:0
SELECT
R/W
Bit #
15
Name
Type
R
Description
LP_NEXT_PAGE
Link partner next page.
When this bit is set to 1, it indicates that the
link partner wishes to engage in next page exchange.
Link partner acknowledge.
When this bit is set to 1, it indicates that
the link partner has successfully received at least three consecutive
and consistent FLP (fast link pulse) bursts.
Remote fault.
When this bit is set to 1, it indicates that the link partner
has a fault.
Technology ability field.
This field contains the technology ability of
the link partner. These bits are similar to the bits defined for the
MR4
register
(see Table 131 on page 151)
.
Selector field. This field contains the type of message sent by the link
partner. For
IEEE
802.3u 1995 compliant link partners, this field
should read 00001.
14
LP_ACK
R
13
LP_REM_FAULT
R
12:5
LP_TECH_ABILITY
R
4:0
LP_SELECT
R