BCM5722 Programmer’s Guide
10/15/07
Broadcom Corporation
Page 423 Transceiver Registers Document 5722-PG101-R
NEXT PAGE TRANSMIT REGISTER (PHY_ADDR = 0X1, REG_ADDR = 07H)
0 Link Partner Auto-
negotiation Ability
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.
0RO
Table 485: Next Page Transmit Register (PHY_Addr = 0x1, Reg_Addr = 07h)
Bit Field Description Init Access
15 Next Page 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.
0R/W
14 Reserved Write as 0, ignore on read. 0 RO
13 Message Page 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.
1R/W
12 Acknowledge2 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.
0R/W
11 Toggle This bit toggles between different Next Page exchanges to insure a
functional synchronization to the Link Partner. Toggles between exchanges
of different Next Pages.
0RO
10:0 Message or
Unformatted Code
Field
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.
0...01 R/W
Table 484: Auto-Negotiation Expansion Register (PHY_Addr = 0x1, Reg_Addr = 06h) (Cont.)
Bit Field Description Init Access
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