Motorola PowerQUICC II MPC8280 Series Reference Manual page 1090

ATM Memory Structure
Table 31-35. AAL5 RxBD Field Descriptions (continued)
Offset Bits Name
0x02 — DL
0x04 RXDBPTR Rx data buffer pointer. Points to the first location of the associated buffer; may reside in
31.10.5.5 AAL1 RxBD
Figure 31-47 shows the AAL1 RxBD.
0 1
Offset + 0x00 E —
Offset + 0x02
Offset + 0x04
Offset + 0x06
Table 31-36 describes AAL1 RxBD fields.
31-76
Freescale Semiconductor, Inc.
Data length. The number of octets written by the CP into this BD's buffer. It is written by
the CP once the BD is closed. In the last BD of a frame, DL contains the total frame
length.
internal or external memory. It is recommended that the pointer be burst-aligned.
2 3 4 5 6
W I SNE — CM
Rx Data Buffer Pointer
Figure 31-47. AAL1 RxBD
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Description
7 8 9 10 11
—
Data Length
12 13 14 15
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