KSZ8441HL Datasheet, PDF (117/194 Pages) Micrel Semiconductor – IEEE 1588v2, Precision Time Protocol-Enabled, 10/100Mbs, Ethernet End-Point Connection with 8- or 16-Bit Host Bus Interface

Micrel, Inc.
Bit
Default
11
0
10-0
0x001
KSZ8441HL/FHL
R/W Description
Toggle
Toggle (T) is used by the arbitration function to ensure synchronization with the link partner
during Next Page exchange. This bit shall always take the opposite value of the Toggle bit in
the previously exchanged Link Codeword. The initial value of the Toggle bit in the first Next
RO _{Page transmitted is the inverse of bit [11] in the base Link Codeword and, therefore, may}
assume a value of logic one or zero. The Toggle bit shall be set as follows:
1 = Previous value of the transmitted Link Codeword equal to logic zero.
0 = Previous value of the transmitted Link Codeword equal to logic one.
Message and Unformatted Code Field
RO
Message/Unformatted code field bits [10:0]
Port 1 Auto-Negotiation Link Partner Received Next Page Register (0x0DE – 0x0DF):
P1ALPRNP
This register contains the Port 1 auto-negotiation link partner received next page related bits.
Bit
Default
R/W Description
Next Page
Next Page (NP) is used by the Next Page function to indicate whether or not this is the last
15
0
RO ^{Next Page to be transmitted. NP shall be set as follows:}
1 = Additional Next Page(s) will follow.
0 = Last page.
Acknowledge
Acknowledge (Ack) is used by the auto-negotiation function to indicate that a device has
successfully received its Link Partner’s Link Codeword. The Acknowledge bit is encoded in bit
14
0
RO _{[14] regardless of the value of the Selector Field or Link Codeword encoding. If no Next Page}
information is to be sent, this bit shall be set to logic one in the Link Codeword after the
reception of at least three consecutive and consistent FLP Bursts (ignoring the Acknowledge
bit value).
Message Page
Message Page (MP) is used by the Next Page function to differentiate a Message Page from
13
0
RO ^{an Unformatted Page. MP shall be set as follows:}
1 = Message Page.
0 = Unformatted Page.
Acknowledge 2
Acknowledge 2 (Ack2) is used by the Next Page function to indicate that a device has the
12
0
RO ^{ability to comply with the message. Ack2 shall be set as follows:}
1 = Able to comply with message.
0 = Unable to comply with message.
Toggle
Toggle (T) is used by the arbitration function to ensure synchronization with the link partner
during Next Page exchange. This bit shall always take the opposite value of the Toggle bit in
the previously exchanged Link Codeword. The initial value of the Toggle bit in the first Next
11
0
RO _{Page transmitted is the inverse of bit [11] in the base Link Codeword and, therefore, may}
assume a value of logic one or zero. The Toggle bit shall be set as follows:
1 = Previous value of the transmitted Link Codeword equal to logic zero.
0 = Previous value of the transmitted Link Codeword equal to logic one.
10-0
0x000
Message and Unformatted Code Field
RO
Message/Unformatted code field bits [10:0]
June 17, 2014
117
Revision 1.0