
KS8721BL/SL
Micrel
M9999-051704
20
May 2004
Address
Name
Description
Mode(1)
Default
5.11:10
Pause
5.10 5 .11
RO
0
00
No PAUSE
01
Asymmetric PAUSE (link partner)
10
Symmetric PAUSE
11
Symmetric & Asymmetric PAUSE (local device)
5.9
100 BASE-T4
1 = T4 capable; 0 = no T4 capability.
RO
0
5.8
100BASE-TX Full-Duplex
1 = TX with full-duplex; 0 = no TX full-duplex capability.
RO
0
5.7
100BASE-TX
1 = TX capable; 0 = no TX capability.
RO
0
5.6
10BASE-T Full-Duplex
1 = 10Mbps with full-duplex.
RO
0
0 = no 10Mbps full-duplex capability.
5.5
10BASE-T
1 = 10Mbps capable; 0 = no 10Mbps capability.
RO
0
5.4:0
Selector Field
[00001] = IEEE 802.3.
RO
00001
Register 6h - Auto-Negotiation Expansion
6.15:5
Reserved
RO
0
6.4
Parallel Detection Fault
1 = fault detected by parallel detection.
RO/LH
0
0 = no fault detected by parallel detection.
6.3
Link Partner Next
1 = link partner has next page capability.
RO
0
Page Able
0 = link partner does not have next page capability.
6.2
Next Page Able
1 = local device has next page capability.
RO
1
0 = local device does not have next page capability.
6.1
Page Received
1 = new page received; 0 = new page not yet received.
RO/LH
0
6.0
Link Partner
1 = link partner has auto-negotiation capability.
RO
0
Auto-Negotiation Able
0 = link partner does not have auto-negotiation capability.
Register 7h - Auto-Negotiation Next Page
7.15
Next Page
1 = additional next page(s) will follow; 0 = last page.
RW
0
7.14
Reserved
RO
0
7.13
Message Page
1 = message page; 0 = unformatted page.
RW
1
7.12
Acknowledge 2
1 = will comply with message.
RW
0
0 = cannot comply with message.
7.11
Toggle
1 = previous value of the transmitted link code word.
RO
0
equaled logic One; 0 = logic Zero.
7.10:0
Message Field
11-bit wide field to encode 2048 messages.
RW
001
Register 8h - Link Partner Next Page Ability
8.15
Next Page
1 = additional next page(s) will follow; 0 = last page.
RO
0
8.14
Acknowledge
1 = successful receipt of link word.
RO
0
0 = no successful receipt of link word.
8.13
Message Page
1 = Message Page; 0 = unformatted page.
RO
0
8.12
Acknowledge 2
1 = able to act on the information.
RO
0
0 = not able to act on the information.
8.11
Toggle
1 = previous value of transmitted link code word equal
RO
0
to logic zero; 0 = previous value of transmitted link code
word equal to logic one.
8.10:0
Message Field
RO
0
Note:
1. RW: Read/Write, RO: Read Only, SC: Self Clear, LH: Latch High, LL: Latch Low. Some of the default values are set by strap-in. See “Strapping
Options.”