SPRUGR9H November 2010 – April 2015 66AK2E05 , 66AK2H06 , 66AK2H12 , 66AK2H14 , 66AK2L06 , AM5K2E02 , AM5K2E04 , SM320C6678-HIREL , TMS320C6652 , TMS320C6654 , TMS320C6655 , TMS320C6657 , TMS320C6670 , TMS320C6671 , TMS320C6672 , TMS320C6674 , TMS320C6678
The TX Channel Configuration Register B (Figure 4-25) is used to initialize special handling modes for the TX DMA channel. This register should be written only when the channel is disabled (tx_enable is 0).
31 | 30 | 29 | 28 | 25 | 24 | 23 | 0 |
Reserved | TX_FILT
_EINFO |
TX_FILT
_PSWORDS |
Reserved | TX_AIF_MONO
_MODE |
Reserved |
R-0 | W-0 | W-0 | R-0 | W-0 | R-0 |
Legend: R = Read only; W = Write only; - n = value after reset |
Bit | Field | Description |
---|---|---|
31 | Reserved | Reads return 0 and writes have no effect. |
30 | TX_FILT_EINFO | TX Filter Software Info: This field controls whether or not the DMA controller will pass the extended packet information fields (if present) from the descriptor to the back end application. This field is encoded as follows:
|
29 | TX_FILT_PSWORDS | TX Filter Protocol Specific Words: This field controls whether or not the DMA controller will pass the protocol specific words (if present) from the descriptor to the back end application. This field is encoded as follows:
|
28-25 | Reserved | Reads return 0 and writes have no effect. |
24 | TX_AIF_MONO_MODE | TX AIF Specific Monolithic Packet Mode: This field, when set, indicates that all monolithic packets that will be transferred on this channel will be formatted in an optimal configuration as needed by the antenna interface peripheral. The AIF configuration uses a fixed descriptor format that includes a 4 word header (3 mandatory descriptor info words, and 1 protocol specific word), and payload data immediately following (data offset always set to 16).
Note: When packets are sent automatically from another IP using this mode, it is mandatory that the packets are built using the format mentioned above, and pushed with the Descriptor Size field = 3. The FFTC pushes its output packets with a Descriptor Size field = 1, so automatic (CPU free) transfers from the FFTC are not possible. |
23-0 | Reserved | Reads return 0 and writes have no effect. |