194
Am79C978
TBR6: 10BASE-T
Auto-Negotiation Expansion
Register (Register 6)
The Auto-Negotiation Expansion Register provides ad-
ditional information which aids the Auto-Negotiation
process. The Auto-Negotiation Expansion Register bits
are Read Only. See Table 72.
Table 72.
TBR6: 10BASE-T Auto-Negotiation Expansion Register (Register 6)
TBR7: 10BASE-T Auto-Negotiation Next Page
Register (Register 7)
The Auto-Negotiation Next Page Register contains the
next page link code word to be transmitted. On power-
up the default value of 2001h represents a message
page with the message code set to null. See Table 73.
Table 73.
TBR7: 10BASE-T Auto-Negotiation Next Page Register (Register 7)
Reserved Registers (Registers 8-15, 18, 20-23, and
25-31)
The
Am79C978 home networking
device contains re-
served registers at addresses 8-15, 18, 20-23, and 25-
31. These registers should be ignored when read and
should not be written at any time.
Bit(s)
Name
Description
Read/
Write
H/W or Soft
Reset
15:5
Reserved
RO
0
4
Parallel Detection
Fault
1=Parallel detection fault
0=No parallel detection fault
RO, LH
0
3
Link Partner Next
Page Able
1 = Link partner is next page able
0 = Link partner is not next page able
RO
0
2
Next Page Able
1 = Am79C978 home networking device channel is next page
able
0 = Am79C978 home networking device channel is not next page
able
RO
1
1
Page Received
1 = A new page has been received
0 = A new page has not been received
RO, LH
0
0
Link Partner ANEG
Able
1 = Link partner is Auto-Negotiation able
0 = Link partner is not Auto-Negotiation able
RO
0
Bit(s)
Name
Description
Read/
Write
H/W or Soft
Reset
15
Next Page
Am79C978 home networking device channel next page request
R/W
0
14
Reserved
RO
0
13
Message Page
Am79C978 home networking device channel message page
request
R/W
1
12
Acknowledge 2
1 = Am79C978 home networking device channel can comply with
the request
0 = Am79C978 home networking device channel cannot comply
with the request
R/W
0
11
Toggle
Am79C978 home networking device channel toggle bit
RO
0
10:0
Message Field
Message code field
R/W
0x001