Motorola MPC8260 - Manual (Page 851)

29-71 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA
Part IV. Communications Processor Module
29.10.5.5 AAL1 RxBD
Figure 29-47 shows the AAL1 RxBD.
0x02 Ñ DL Data length. The number of octets written by the CP into this BDÕs 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.
0x04 RXDBPTR Rx data buffer pointer. Points to the Þrst location of the associated buffer; may reside in
internal or external memory. This pointer must be burst-aligned.
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Offset + 0x00 E Ñ W I SNE Ñ CM Ñ
Offset + 0x02 Data Length
Offset + 0x04 Rx Data Buffer Pointer
Offset + 0x06
Figure 29-47. AAL1 RxBD
Table 29-35. AAL5 RxBD Field Descriptions (Continued)
Offset Bits Name Description