
IP101
6.0 Register Descriptions
(continued)
Register 1 : MII Status Register
Copyright
2003, IC Plus Corp.
Confidential, All rights reserved.
Advanced, Specification subject to change without notice.
10 / 33
IP101-DS-R0.02
Feb. 24, 2003
NOT APPROVED BY TECHNICAL DOCUMENT CONTROL
Address
Name
Description/Usage
Default value (h):
7849
15
100Base-T4
1 = enable 100Base-T4 support
0 = suppress 100Base-T4 support
0, RO
14
100Base-TX
Full Duplex
1 = enable 100Base-TX full duplex support
0 = suppress 100Base-TX full duplex support
1, RO
13
100BASE-TX
Half Duplex
1 = enable 100Base-TX half duplex support
0 = suppress 100Base-TX half duplex support
1, RO
12
10Base-T Full
Duplex
1 = enable 10Base-T full duplex support
0 = suppress 10Base-T full duplex support
1, RO
11
10_Base-T
Half Duplex
1 = enable 10Base-T half duplex support
0 = suppress 10Base-T half duplex support
1, RO
10:7
Reserved
0, RO
6
MF Preamble
Suppression
The IP101 will accept management frames with preamble
suppressed. The IP101 accepts management frames without
preamble. A Minimum of 32 preamble bits are required for the
first SMI read/write transaction after reset. One idle bit is
required between any two management transactions as per
IEEE802.3u specifications
1, RO
5
Auto-
Negotiation
Complete
1 = auto-negotiation process completed
0 = auto-negotiation process not completed
0, RO
4
Remote Fault
1 = remote fault condition detected (cleared on read)
0 = no remote fault condition detected
When in 100Base-FX mode, this bit means an in-band signal
Far-End-Fault is detected.
0, RO/LH
3
Auto-
Negotiation
1 = Link had not been experienced fail state
0 = Link had been experienced fail state
1, RO
2
Link Status
1 = valid link established
0 = no valid link established
0, RO/LL
1
Jabber Detect
1 = jabber condition detected
0 = no jabber condition detected
0, RO/LH
0
Extended
Capability
1 = extended register capability
0 = basic register capability only
1, RO