28
ICS1890
Auto-Negotiation Expansion Register (register 6
[0x06]
)
Auto-Negotiation Expansion Register
(register 6)
The Auto-Negotiation expansion register is a 16-bit read-only
register used to indicate the status of the auto-negotiation
process. It is accessed via the management interface of the
MII.
Reserved (bits 15:5)
These bits are reserved. The contents are permanently set to
logic zeros.
Parallel Detection Fault (bit 4)
If set to a logic one, this bit indicates that a parallel detection
fault has been detected. This means that more than one of the
allowed technologies has detected a valid link.
Link Partner Next Page Able (bit 3)
If set to a logic one, this bit indicates that the link partner is
capable of operating in the next page mode.
Next Page Able (bit 2)
This bit is permanently set to a logic zero indicating that the
ICS1890
is not able to operate in the next page mode.
Page Received (bit 1)
If set to a logic one, this bit indicates that three identical and
consecutive link code words have been received from the link
partner.
Link Partner Auto-Negotiation Able (bit 0)
If set to a logic one, this bit indicates that the link partner is
able to participate in the auto-negotiation process. If set to a
logic zero, it is not able to participate in the auto-negotiation
process.
Bit
Definition
When bit=0
When bit=1
Access
Default
Hex
15
Reserved by IEEE
always 0
CW
0
0
14
Reserved by IEEE
always 0
CW
0
13
Reserved by IEEE
always 0
CW
0
12
Reserved by IEEE
always 0
CW
0
11
Reserved by IEEE
always 0
CW
0
0
10
Reserved by IEEE
always 0
CW
0
9
Reserved by IEEE
always 0
CW
0
8
Reserved by IEEE
always 0
CW
0
7
Reserved by IEEE
always 0
CW
0
0
6
Reserved by IEEE
always 0
CW
0
5
Reserved by IEEE
always 0
CW
0
4
Parallel Detection Fault
no fault
more than one technology
appeared valid
RO
/LH
0
3
Link Partner Next Page Able
link partner is not Next
Page Able
link partner is Next Page
Able
RO
0
0
2
Next Page Able
always 0 - next page not
supported
RO
0
1
Page Received
new link code word not
received
new link code word
received
RO
/LH
0
0
Link Partner is Auto-
Negotiation Able
link partner not able
link partner support Auto-
Negotiation
RO
0
Summary of Contents for PHYceiver ICS1890
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