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EDMA3 Registers
11.4.2.7.6 Source Active Memory Protection Proxy Register (SAMPPRXY)
The source active memory protection proxy register (SAMPPRXY) is shown in Figure 11-120 and
described in Table 11-105.
Figure 11-120. Source Active Memory Protection Proxy Register (SAMPPRXY)
31 16
Reserved
R-0
15 9 8 7 4 3 0
Reserved PRIV Reserved PRIVID
R-0 R-0 R-0 R-0
LEGEND: R = Read only; -n = value after reset
Table 11-105. Source Active Memory Protection Proxy Register (SAMPPRXY) Field Descriptions
Bit Field Value Description
31-9 Reserved 0 Reserved. Always write 0 to this bit; writes of 1 to this bit are not supported and attempts to do so may
result in undefined behavior.
8 PRIV Privilege level. The privilege level used by the host to set up the parameter entry in the channel
controller. This field is set up when the associated TR is submitted to the EDMA3TC.
The privilege ID is used while issuing read and write command to the target endpoints so that the target
endpoints can perform memory protection checks based on the PRIV of the host that set up the DMA
transaction.
0 User-level privilege.
1 Supervisor-level privilege.
7-4 Reserved 0 Reserved. Always write 0 to this bit; writes of 1 to this bit are not supported and attempts to do so may
result in undefined behavior.
3-0 PRIVID 0-Fh Privilege ID. This contains the privilege ID of the host that set up the parameter entry in the channel
controller. This field is set up when the associated TR is submitted to the EDMA3TC.
This PRIVID value is used while issuing read and write commands to the target endpoints so that the
target endpoints can perform memory protection checks based on the PRIVID of the host that set up
the DMA transaction.
1009
SPRUH73H–October 2011–Revised April 2013 Enhanced Direct Memory Access (EDMA)
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