Digi NS9750 - Manual (Page 537)

w w w . d i g i e m b e d d e d . c o m 5 1 3
B B u s D M A C o n t r o l l e r
9000 0000 / 0020 / 0040 / 0060 / 0080 / 00A0 / 00C0 / 00E0 / 0100 / 0120 /
0140 / 0160 / 0180 / 01A0 / 01C0 / 01E0
Address: DMA2
9011 0000 / 0020 / 0040 / 0060 / 0080 / 00A0 / 00C0 / 00E0 / 0100 / 0120 /
0140 / 0160 / 0180 / 01A0 / 01C0 / 01E0
The DMA Buffer Descriptor Pointer register contains a 32-bit pointer to the first
buffer descriptor in a contiguous list of buffer descriptors. There is one Buffer
Descriptor Pointer for each channel within each DMA controller module. Each buffer
descriptor is 16 bytes in length.
Register bit assignment
Bits Access Mnemonic Reset Description
D31:00 R/W BuffDesc 0x00000000 Buffer descriptor
32-bit pointer to a buffer descriptor.
Table 312: BBus DMA Buffer Descriptor Pointer register bit definition
13 12 11 10 9 8 7 6 5 4 3 2 1 0 15 14
31 29 28 27 26 25 24 23 22 21 20 19 18 17 16 30
BuffDesc
BuffDesc