ICS1892 Datasheet, PDF (78/148 Pages) Integrated Circuit Systems – 10Base-T/100Base-TX Integrated PHYceiver

ICS1892 Data Sheet
Chapter 8 Management Register Set
8.7 Register 5: Auto-Negotiation Link Partner Ability Register
Table 8-12 lists the bits for the Auto-Negotiation Link Partner Ability Register. An STA uses this register to
determine the capabilities being advertised by the remote link partner. During the auto-negotiation process,
the ICS1892 advertises (that is, exchanges) the capability data with its remote link partner using a
pre-defined Link Code Word. The value of the Link Control Word received from its remote link partner
establishes the value of the bits in this register.
Note:
1. For an explanation of acronyms used in Table 8-12, see Chapter 1, “Abbreviations and Acronyms”.
2. The values in this register are valid only when the auto-negotiation process is complete, as indicated by
bit 1.5 or bit 17.4.
Table 8-12. Auto-Negotiation Link Partner Ability Register (register 5 [0x05])
Bit
Definition
When Bit = 0
When Bit = 1
Ac- SF De- Hex
cess
fault
5.15 Next Page
Next Page disabled
Next Page enabled
RO – 0 0
5.14 Acknowledge
Always 0
N/A
RO – 0
5.13 Remote fault
No faults detected
Remote fault detected RO – 0
5.12 IEEE reserved
Always 0
N/A
RO – 0†
5.11 IEEE reserved
Always 0
N/A
RO – 0† 0
5.10 IEEE reserved
Always 0
N/A
RO – 0†
5.9 100Base-T4
Always 0. (Not supported.) N/A
RO – 0
5.8 100Base-TX, full duplex Link partner is not capable
Link partner is capable RO – 0
5.7 100Base-TX, half duplex Link partner is not capable
Link partner is capable RO – 0
0
5.6 10Base-T, full duplex
Link partner is not capable
Link partner is capable RO – 0
5.5 10Base-T, half duplex Link partner is not capable
Link partner is capable RO – 0
5.4 Selector Field bit S4
IEEE 802.3 defined. Always 0. N/A
RO – 0
5.3 Selector Field bit S3
IEEE 802.3 defined. Always 0. N/A
CW – 0 0
5.2 Selector Field bit S2
IEEE 802.3 defined. Always 0. N/A
CW – 0
5.1 Selector Field bit S1
IEEE 802.3 defined. Always 0. N/A
CW – 0
5.0 Selector Field bit S0
N/A
IEEE 802.3 defined.
Always 1.
CW – 0
† As per the IEEE Std 802.3u, during any write operation to any bit in this register, the STA must write the default value
to all Reserved bits.
8.7.1 Next Page (bit 5.15)
If bit 5.15 is logic:
• Zero, then the remote link partner is indicating that this is the last page being transmitted.
• One, then the remote link partner is indicating that additional pages follow.
ICS1892, Rev. D, 2/26/01
© 2000-2001, Integrated Circuit Systems, Inc.
All rights reserved.
78
February 26, 2001