AM79C901AJCT AMD [Advanced Micro Devices], AM79C901AJCT Datasheet - Page 62

• Manufacturer Part Number: AM79C901AJCT
• Description: HomePHY Single-Chip 1/10 Mbps Home Networking PHY
• Manufacturer: AMD [Advanced Micro Devices]

TBR6: 10BASE-T Auto-Negotiation Expansion Register (Register 6)
The Auto-Negotiation Expansion Register provides ad-
ditional information which aids the Auto-Negotiation
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
Reserved Registers (Registers 8-15, 18, 20-23, and 25-31)
The
addresses 8-15, 18, 20-23, and 25-31. These registers
62
Bits
15:5
Bits
10:0
15
14
13
12
11
4
3
2
1
0
Am79C901A
Link Partner ANEG
Parallel Detection
Link Partner Next
Next Page Able
Page Received
Acknowledge 2
Message Page
Message Field
Page Able
Next Page
Reserved
Reserved
Toggle
Name
Name
Table 48. TBR6: 10BASE-T Auto-Negotiation Expansion Register (Register 6)
Fault
Able
Table 49. TBR7: 10BASE-T Auto-Negotiation Next Page Register (Register 7)
device contains reserved registers at
1 = Parallel detection fault
0 = No parallel detection fault
1 = Link partner is next page able
0 = Link partner is not next page able
1 = Am79C901A device channel is next page able
0 = Am79C901A device channel is not next page able
1 = A new page has been received
0 = A new page has not been received
1 = Link partner is Auto-Negotiation able
0 = Link partner is not Auto-Negotiation able
Am79C901A device channel next page request
Am79C901A device channel message page request
1 = Am79C901A device channel can comply with the request
0 = Am79C901A device channel cannot comply with the request
Am79C901A device channel toggle bit
Message code field
P R E L I M I N A R Y
Am79C901A
Description
Description
process. The Auto-Negotiation Expansion Register bits
are Read Only. See Table 48.
the default value of 2001h represents a message page
with the message code set to null. See Table 49.
should be ignored when read and should not be written
to at any time.
Read/
Write
R, LH
R, LH
Read/
Write
R/W
R/W
R/W
R/W
R
R
R
R
R
R
Default Value
Default Value
(hex)
(hex)
001
0
0
0
1
0
0
0
0
1
0
0