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Intel
®
82575EB Gigabit Ethernet Controller — PHY Registers
Intel
®
82575EB Gigabit Ethernet Controller 324632-003
Software Developer’s Manual and EEPROM Guide Revision: 2.1
316 January 2011
14.3.8.7 Auto-Negotiation Expansion Register - ANE (06d; R)
14.3.8.8 Auto-Negotiation Next Page Transmit Register - NPT
(07d; R/W)
Field Bit(s) Description Mode Default
Link Partner Auto-
Negotiation Able
0 1b = Link Partner is Auto-Negotiation able.
0b = Link Partner is not Auto-Negotiation able.
RO 0b
Page Received 1 Indicates that a new page has been received and the received
code word has been loaded into PHY register 05d (base pages)
or PHY register 08d (next pages) as specified in clause 28 of
802.3. This bit clears on read. If PHY register 16d bit 1
(Alternate NP Feature) is set, the Page Received bit also clears
when mr_page_rx = false or transmit_disable = true.
RO/LH 0b
Next Page Able 2 1b = Local device is next page able.
0b = Local device is not next page able.
RO 1b
Link Partner Next Page
Able
3 1b = Link Partner is next page able.
0b = Link Partner is not next page able.
RO 0b
Parallel Detection Fault 4 1b = Parallel detection fault has occured.
0b = Parallel detection fault has not occured.
RO/LH 0b
Base Page 5 This bit indicates the status of the auto-negotiation variable,
base page. If flags synchronization with the auto-negotiation
state diagram enabling detection of interrupted links. This bit is
only used if PHY register 16d, bit 1 (Alternate NP Feature) is
set.
1b = base_page = true.
0b = base_page = false.
RO/LH 0b
Reserved 15:6 Always read as 0b. RO 0b
Field Bit(s) Description Mode Default
Message/Unformatted
Field
10:0 11-bit message code field. R/W 1b
Toggle 11 1b = Previous value of the transmitted Link Code Word = 0b.
0b = Previous value of the transmitted Link Code Word = 1b.
RO 0b
Acknowledge 2 12 1b = Complies with message.
0b = Cannot comply with message.
R/W 0b
Message Page 13 1b = Message page.
0b = Unformatted page.
R/W 1b
Reserved 14 Always read as 0b. Write to 0b for normal operation. RO 0b
Next Page 15 1b = Additional next pages follow.
0b = Last page.
R/W 0b