NXP Semiconductors K22F series, Reference Manual, Page: 478 / 1407

DMA_TCDn_CITER_ELINKNO field descriptions (continued)
Field Description
example, final source and destination address calculations, optionally generating an interrupt to signal
channel completion before reloading the CITER field from the Beginning Iteration Count (BITER) field.
NOTE: When the CITER field is initially loaded by software, it must be set to the same value as that
contained in the BITER field.
NOTE: If the channel is configured to execute a single service request, the initial values of BITER and
CITER should be 0x0001.
22.3.33 TCD Last Destination Address Adjustment/Scatter Gather
Address (DMA_TCDn_DLASTSGA)
Address: 4000_8000h base + 1018h (32d × i), where i=0d to 15d
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
DLASTSGA
W
Reset
x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x* x*
* Notes:
x = Undefined at reset. •
DMA_TCDn_DLASTSGA field descriptions
Field Description
DLASTSGA Destination last address adjustment or the memory address for the next transfer control descriptor to be
loaded into this channel (scatter/gather).
If (TCDn_CSR[ESG] = 0) then:
• Adjustment value added to the destination address at the completion of the major iteration count.
This value can apply to restore the destination address to the initial value or adjust the address to
reference the next data structure.
• This field uses two's complement notation for the final destination address adjustment.
Otherwise:
• This address points to the beginning of a 0-modulo-32-byte region containing the next transfer
control descriptor to be loaded into this channel. This channel reload is performed as the major
iteration count completes. The scatter/gather address must be 0-modulo-32-byte, otherwise a
configuration error is reported.
Memory map/register definition
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
478 NXP Semiconductors