78Q2120-64CG ETC [List of Unclassifed Manufacturers], 78Q2120-64CG Datasheet - Page 14

• Manufacturer Part Number: 78Q2120-64CG
• Description: 10/100BASE-TX Ethernet Transceiver
• Manufacturer: ETC [List of Unclassifed Manufacturers]

78Q2120
10/100BASE-TX
Ethernet Transceiver
REGISTER DESCRIPTION (continued)
MR5 - AUTO-NEGOTIATION LINK PARTNER ABILITY REGISTER
MR6 - AUTO-NEGOTIATION EXPANSION REGISTER
6.15:5
5.12:5
5.4:0
5.15
5.14
5.13
BIT
6.4
6.3
6.2
6.1
6.0
LPANEGA
SYMBOL
LPNPA
RSVD
PDF
NPA
PRX
ACK
A7:0
S4:0
NP
RF
R, 0, RC
R, 0, RC
R, 00000
TYPE
R, 0
R, 0
R, 0
R, 0
R, 0
R, 0
R, 0
R, 0
RESERVED
PARALLEL DETECTION FAULT: When set, it indicates that more
than one technology was detected during link up. This bit is cleared
when read.
LINK PARTNER NEXT PAGE ABLE: When set, it indicates that the
link partner supports the next page function.
NEXT PAGE ABLE: Permanently tied to logic zero since the
78Q2120 does not support next page function.
PAGE RECEIVED: Set when a properly matched link code word has
been received into the Auto-negotiation Link Partner.
cleared when read.
LINK PARTNER AUTO-NEGOTIATION ABLE: When set it indicates
that the link partner is able to participate in the auto-negotiation
function.
DESCRIPTION
NEXT PAGE: When set, it indicates that the link partner wishes to
engage in next page exchange.
ACKNOWLEDGE: When set, it indicates that the link partner has
successfully received at least 3 consecutive and consistent FLP
bursts.
REMOTE FAULT: When set, it indicates that the link partner has a
fault.
TECHNOLOGY ABILITY F IELD: This f i eld 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 transceiver,
this field should be 00001.
14
This bit is