K60P100M100SF2RM Datasheet, PDF (1214/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Functional Description
NOTE
The following addresses are shown for a big endian
implementation.
Table 44-83. Legacy FEC Transmit Buffer Descriptor (TxBD)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Offset + 0 R TO1 W TO2 L
TC
ABC
1
—
—
—
—
—
—
—
—
—
Offset + 2
Offset + 4
Offset + 6
Data Length
Tx Data Buffer Pointer - A[31:16]
Tx Data Buffer Pointer - A[15:0]
1. This bit is not supported by the uDMA.
44.4.14 Enhanced Buffer Descriptors
This section provides a description of the enhanced operation of the driver/DMA via the
buffer descriptors. It is followed by a detailed description of the receive and transmit
descriptor fields. To enable the enhanced features, set ENETn_ECR[1588EN].
44.4.14.1 Enhanced Receive Buffer Descriptor
This section discusses the enhanced uDMA receive buffer descriptor.
NOTE
The following addresses are shown for a big endian
implementation.
Table 44-84. Enhanced uDMA Receive Buffer Descriptor (RxBD)
15 14 13 12 11
Offset + 0 E RO1 W RO2 L
Offset + 2
Offset + 4
Offset + 6
Offset + 8 ME — — — —
Offset + A — — — — —
Offset + C
Header length
Offset + E
Offset + 10 BDU — — — —
10 9 8 7 6 5 4 3 2 1 0
— — M BC MC LG NO — CR OV TR
Data length
Rx data buffer pointer - A[31:16]
Rx data buffer pointer - A[15:0]
PE CE UC INT — — — — — — —
—
—
—
—
—
ICE PCR
—
VLA
N
IPV6
FRA
G
———
Protocol type
Payload checksum
———————————
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K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.