K60P100M100SF2RM Datasheet, PDF (1222/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Functional Description
• Ethernet length/type field
• Payload
Frames on the FIFO interface do not contain preamble and SFD fields, which are inserted
and discarded by the MAC on transmit and receive, respectively.
• On receive, CRC and frame padding can be stripped or passed through transparently.
• On transmit, padding and CRC can be provided by the user application, or appended
automatically by the MAC independent for each frame. No size restrictions apply.
Note
On transmit, if ENETn_TCR[ADDINS] is set, bytes 6–11 of
each frame can be set to any value, since the MAC overwrites
the bytes with the MAC address programmed in the
ENETn_PAUR and ENETn_PALR registers.
Table 44-89. FIFO Interface Frame Format
Byte Number
0–5
6–11
12–13
14–N
Field
Destination MAC address
Source MAC address
Length/type field
Payload data
VLAN-tagged frames are also supported on both transmit and receive and implement
additional information (VLAN type and info).
Table 44-90. FIFO Interface VLAN Frame Format
Byte Number
0–5
6–11
12–15
16–17
18–N
Field
Destination MAC address
Source MAC address
VLAN tag and info
Length/type field
Payload data
Note
The standard defines that the LSB of the MAC address is sent/
received first, while for all the other header fields (i.e. length/
type, VLAN tag, VLAN info and pause quanta), the MSB is
sent/received first.
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K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.