IP175A LF
Preliminary Data Sheet
49/60
February 20, 2006
Copyright © 2004, IC Plus Corp.
IP175A LF-DS-R08
Bit
Function
R/W
Description
Default
MII status register (address 01H)
14
100Base-X full
duplex Capable
RO
1 = 100Base-X full duplex capable
0 = not 100Base-X full duplex capable
The default of this bit will change depend on the external
setting of IP175A LF. If external pin setting without
100Base-X full duplex support, then this bit will change
default to logic 0.
1
13
100Base-X half
duplex Capable
RO
1 = 100Base-X half duplex capable
0 = not 100Base-X half duplex capable
The default of this bit will change depend on the external
setting of IP175A LF. If external pin setting without
100Base-X half duplex support, then this bit will change
default to logic 0
1
12
10Base-T full
duplex Capable
RO
1 = 10Base-T full duplex capable
0 = not 10Base-T full duplex capable
The default of this bit will change depend on the external
setting of IP175A LF. If external pin setting without 100Base-T
full duplex support, then this bit will change default to logic 0
1
11
10Base-T half
duplex Capable
RO
1 = 10Base-T half duplex capable
0 = not 10Base-T half duplex capable
The default of this bit will change depend on the external
setting of IP175A LF. If external pin setting without
100Base-X full duplex support, then this bit will change
default to logic 0
1
10:7 Reserved
RO
Ignore on read
-
6
MF preamble
Suppression
RO
1 = preamble may be suppressed
0 = preamble always required
1
5
Auto-Negotiation
Complete
RO
1 = Auto-Negotiation complete
0 = Auto-Negotiation in progress
When read as logic 1, indicates that the Auto-Negotiation
process has been completed, and the contents of register 4
and 5 are valid. When read as logic 0, indicates that the
Auto-Negotiation process has not been completed, and the
contents
of
register
4
and
5
are
meaningless.
If
Auto-Negotiation is disabled (bit 0.12 set to logic 0), then this
bit will always read as logic 0.
0
4
Remote fault
RO
LH
1 = remote fault detected
0 = not remote fault detected
When read as logic 1, indicates that IP175A LF has detected
a remote fault condition. This bit is set until remote fault
condition gone and before reading the contents of the
register. This bit is cleared after IP175A LF reset.
0
3
Auto-Negotiation
Ability
RO
1 = Auto-Negotiation capable
0 = not Auto-Negotiation capable
When read as logic 1, indicates that IP175A LF has the
ability to perform Auto-Negotiation. The value of this bit will
depend on the external mode setting of IP175A LF operation
mode.
1
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