31 |
LOOPBACK |
Loopback enable. When set (1), causes the TX Streaming I/F to loopback to the RX Streaming I/F. For normal operation, this bit must be set for the QMSS PKTDMA, and cleared (0) for all others. This field has a reset value of 1.
Note: Some PKTDMAs are internally configured such that their channels may be used for infrastructure transfers when the IP itself is not in use. For KeyStone I, the SRIO and FFTC_x PKTDMAs may be used in this manner. To do this, set this field to 1, and make sure the IP’s configuration registers are not programmed. Then simply program the PKTDMA channels and flows as if it were the QMSS Infrastructure PKTDMA, but (of course) limiting the number of channels used to that of the IP’s PKTDMA.
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