Table 485: Next Page Transmit Register (Phy_Addr = 0X1, Reg_Addr = 07H) - Broadcom BCM5722 Programmer's Manual

BCM5722
Table 484: Auto-Negotiation Expansion Register (PHY_Addr = 0x1, Reg_Addr = 06h) (Cont.)
Bit Field
0 Link Partner Auto-
negotiation Ability
N P T
EXT AGE RANSMIT

Table 485: Next Page Transmit Register (PHY_Addr = 0x1, Reg_Addr = 07h)

Bit Field
15 Next Page
14 Reserved
13 Message Page
12 Acknowledge2
11 Toggle
10:0 Message or
Unformatted Code
Field
Page 423 Transceiver Registers
Description
The BCM5722 Ethernet controller returns a 1 on bit 0 of the Auto-negotiation
Expansion Register when the link partner is known to have auto-negotiation
capability. Before any auto-negotiation information is exchanged, or if the link
partner does not comply with IEEE auto-negotiation, the bit returns a 0.
• 1 = Link partner has auto-negotiation capability.
• 0 = Link partner does not have auto-negotiation.
R (PHY_A
EGISTER
Description
Bit 15 of the Next Page Transmit Register must be set to 1 to indicate that
more Next Pages are to be sent. This bit must be set to 0 to indicate that this
is the last Next Page to be transmitted. When this bit is read, it returns the
last value written.
• 1 = Additional Next Pages follow.
• 0 = Sending last Next Page.
Write as 0, ignore on read.
Bit 13 of the Next Page Transmit Register must be set to 1 to indicate that a
formatted message page is being sent. This bit must be set to 0 to indicate
that an unformatted page is being sent. When this bit is read, it returns the
last value written.
• 1 = Formatted page.
• 0 = Unformatted page.
When this bit is set to 1, the BCM5722 Ethernet controller indicates that it can
comply with the Next Page request. When this bit is set to 0, the BCM5722
Ethernet controller indicates that it cannot comply with the Next Page
request. When this bit is read, it returns the last value written.
• 1 = Complies with message.
• 0 = Cannot comply with message.
This bit toggles between different Next Page exchanges to insure a
functional synchronization to the Link Partner. Toggles between exchanges
of different Next Pages.
These 11 bits make up the message code defined IEEE 802.3 section 28,
Annex C when sending formatted pages. When sending unformatted Next
Pages, these 11 bits contain an arbitrary data value.
Bro adco m C orp or atio n
= 0 1, R _A
DDR X EG DDR
Programmer's Guide
10/15/07
Init Access
0 RO
= 07 )
H
Init Access
0 R/W
0 RO
1 R/W
0 R/W
0 RO
0...01 R/W
Document 5722-PG101-R