78Q2120C Teridian Semiconductor Corp. (TDK Semiconductor), 78Q2120C Datasheet - Page 15

• Manufacturer Part Number: 78Q2120C
• Description: 10/100 Ethernet PHYS
• Manufacturer: Teridian Semiconductor Corp. (TDK Semiconductor)

78Q2120C
10/100BASE-TX Transceiver
MR5: Auto-Negotiation Link Partner Ability Register
MR6: Auto-Negotiation Expansion Register
© 2003 TDK Semiconductor Corporation, Proprietary and Confidential
5.12:5
6.15:5
5.4:0
5.15
5.14
5.13
Bit
Bit
6.4
6.3
6.2
6.1
6.0
LPANEGA
Symbol
Symbol
LPNPA
RSVD
ACK
A7:0
S4:0
PDF
NPA
PRX
NP
RF
Type
Type
RC
RC
R
R
R
R
R
R
R
R
R
Default Description
Default Description
00h
0
0
0
0
0
0
0
0
0
0
Next Page: When ‘1’ is read, it indicates the link partner wishes to
engage in Next Page exchange.
Acknowledge:
successfully received at least 3 consecutive and consistent FLP bursts.
Remote Fault: When ‘1’ is read, it indicates the link partner has a fault.
Technology Ability Field: This field contains the technology ability of
the link partner. The bit definition is the same as MR4.12:5.
Selector Field: This field contains the type of message sent by the link
partner. For IEEE 802.3 compliant link partner, this field should be
‘00001’.
Reserved
Parallel Detection Fault: When ‘1’ is read, it indicates that more than
one technology has been detected during link up. This bit is cleared
when read.
Link Partner Next Page Able: When ‘1’ is read, it indicates the link
partner supports the Next Page function.
Next Page Able: Reads ‘0’ since the 78Q2120C does not support Next
Page function.
Page Received:
received into the Auto-Negotiation Link Partner Ability Register. This
bit is cleared upon read.
Link Partner Auto-Negotiation Able: When ‘1’ is read, it indicates the
link partner is able to participate in the Auto-Negotiation function.
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When ‘1’ is read, it indicates the link partner has
Reads ‘1’ when a new link code word has been
Rev_1.1