Texas Instruments TMS320C6745 DSP - Source Active Source Address Register (SASRC); Source Active Count Register (SACNT); Source Active Source Address Register (SASRC) Field Descriptions; Source Active Count Register (SACNT) Field Descriptions

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SPRUH91D–March 2013–Revised September 2016
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Enhanced Direct Memory Access (EDMA3) Controller
Table 16-71. Source Active Options Register (SAOPT) Field Descriptions (continued)
Bit Field Value Description
1 DAM Destination address mode within an array.
0 Increment (INCR) mode. Destination addressing within an array increments.
1 Constant addressing (CONST) mode. Destination addressing within an array wraps around upon
reaching FIFO width.
0 SAM Source address mode within an array.
0 Increment (INCR) mode. Source addressing within an array increments.
1 Constant addressing (CONST) mode. Source addressing within an array wraps around upon reaching
FIFO width.
16.4.3.6.2 Source Active Source Address Register (SASRC)
The source active source address register (SASRC) is shown in Figure 16-92 and described in
Table 16-72.
Figure 16-92. Source Active Source Address Register (SASRC)
31 0
SADDR
R-0
LEGEND: R = Read only; -n = value after reset
Table 16-72. Source Active Source Address Register (SASRC) Field Descriptions
Bit Field Value Description
31-0 SADDR 0-FFFF FFFFh Source address for program register set. EDMA3TC updates value according to source
addressing mode (SAM bit in the source active options register, SAOPT) .
16.4.3.6.3 Source Active Count Register (SACNT)
The source active count register (SACNT) is shown in Figure 16-93 and described in Table 16-73.
Figure 16-93. Source Active Count Register (SACNT)
31 16
BCNT
R-0
15 0
ACNT
R-0
LEGEND: R = Read only; -n = value after reset
Table 16-73. Source Active Count Register (SACNT) Field Descriptions
Bit Field Value Description
31-16 BCNT 0-FFFFh B dimension count. Number of arrays to be transferred, where each array is ACNT in length. It is
decremented after each Read command appropriately. Represents the amount of data remaining to be
Read. It should be 0 when transfer request (TR) is complete.
15-0 ACNT 0-FFFFh A dimension count. Number of bytes to be transferred in first dimension. It is decremented after each
Read command appropriately. Represents the amount of data remaining to be Read. It should be 0 when
transfer request (TR) is complete.