SPRUIV7B May 2022 – September 2023 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP
The configuration specific flags are specific to a given TR type. If a TR type does not require additional flags the field should be filled with 0’s. Currently only Types 0-4 and Type 15 support the following configuration specific flags:
Bit | Field | Description |
---|---|---|
0 | ISA | Indirect Source Address 0: Source address in TR is a directly usable pointer to the data 1: Source address in TR is a pointer to a 64-bit location that contains the actual pointer to the data |
1 | IDA | Indirect Destination Address 0: Destination address in TR is a directly usable pointer to the data 1: Destination address in TR is a pointer to a 64-bit location that contains the actual pointer to the data |
2 | SUPR_EVT | Suppress Event Output: 0 = Output events will be generated according to FLAGS.EVENT_SIZE field 1 = No output events will be generated for the duration of this TR execution This field is only valid on split and type 15 TRs (Type 0-3,15) |
3 | Reserved | Reserved for Future use. |
6:4 | EOL | This field is only valid on split TRs (Type 0-3). On source (Read) split TRs, this field specifies whether or not the EOL delimiters should be produced on the Tx PSI-L bus. The encodings of this field for source split TRs is as follows: 0 = SOL/EOL match SOP/EOP 1 = SOL/EOL boundaries are each ICNT0 bytes 2 = SOL/EOL boundaries are each ICNT0*ICNT1 bytes 3 = SOL/EOL boundaries are each ICNT0*ICNT1*ICNT2 bytes 4 = SOL/EOL boundaries are each ICNT0*ICNT1*ICNT2*ICNT3 bytes On destination (Write) split TRs, this field specifies how to handle EOL delimiters when they are encountered on the Rx (write) side of a TR. EOL delimiters can be produced from the Tx (read) side of a block copy operation or from a remotely paired peripheral when operating in split TR mode. The encodings of this field are as follows: 0: Ignore EOL 1: Line length is icnt0 bytes. Clear any remaining ICNT0 bytes and increment ICNT1 by 1 2: Line length is icnt0*icnt1 bytes. Clear any remaining ICNT0/1 bytes and increment ICNT2 by 1 3: Line length is icnt0*icnt1*icnt2 bytes. Clear any remaining ICNT0/1/2 bytes and increment ICNT3 by 1 4: Line length is icnt0*icnt1*icnt2*icnt3 bytes. Move on to next TR 5-7: RESERVED |
7 | EOP | This TR should generate an EOP on the streaming interface for any downstream packet oriented consumers to denote that a ‘packet’ of data is complete 0: No EOP flag will accompany the last PSI-L data phase associated with transfers from this TR 1: On egress the DMA will set the EOP flag coincident with transferring the last of the data for this TR. If the TR data does not complete an entire PSI-L data phase then the remaining bytes in the data phase will be skipped and the internal FIFO pointer will be updated to begin packing new data on a new data phase boundary. |