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SRIO Registers
5.68Processing Element Features CAR (PE_FEAT)
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| Figure 124. Processing Element Features CAR (PE_FEAT) |
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31 | 30 | 29 | 28 |
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BRIDG | MEMO | PROC | SWIT |
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E | RY | ESSO | CH |
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| R |
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R- | R- | R- | R- |
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0x00 | 0x00 | 0x01 | 0x00 |
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LEGEND: R = Read only; |
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| 7 | 6 | 5 | 4 | 3 | ||
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| Reserved | FLOW | RETR CRF_ LARG EXTE EXTENDED_ADDRESS | ||||
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| _CON | ANSMI | SUPP | E_SU | NDED | ING_SUPPORT |
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| TROL | T_SU | ORT | PPOR | _FEAT |
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| _SUP | PPRE |
| T | URES |
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| PORT | SS |
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| R- | R- | R- | R- | R- | ||
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| 0x00 | 0x00 | 0x00 | 0x00 | 0x01 |
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LEGEND: R = Read only;
Table 98. Processing Element Features CAR (PE_FEAT) Field Descriptions
Bit | Field | Value | Description |
31 | BRIDGE |
| PE can bridge to another interface. Examples are PCI, proprietary processor buses, DRAM, etc. |
30 | MEMORY |
| PE has physically addressable local address space and can be accessed as an endpoint through |
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| limited to local configuration Registers, or could be |
29 | PROCESSOR |
| PE physically contains a local processor or similar device that executes code. A device that bridges |
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| to an interface that connects to a processor does not count (see bit 31). |
28 | SWITCH |
| PE can bridge to another external RapidIO interface- an internal port to a local endpoint does not |
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| count as a switch port. For example, a device with two RapidIO ports and a local endpoint is a two |
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| port switch, not a three port switch, regardless of the internal architecture. |
Reserved |
| Reserved | |
7 | FLOW_CONTRO |
| PE supports congestion flow control mechanism |
| L_SUPPORT |
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| 0b | PE does not support flow control |
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| 1b | PE supports flow control |
6 | RETRANSMIT_S |
| PE supports suppression of error recovery on packet CRC errors. |
| UPPRESS |
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| 0b | PE does not support suppression |
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| 1b | PE supports suppression |
5 | CRF_SUPPORT |
| This bit indicates PE support for the Critical Request Flow (CRF) Function. |
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| 0b | PE does not support CRF Function |
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| 1b | PE supports CRF Function |
4 | LARGE_SUPPO |
| Support of common transport large systems. |
| RT |
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| 0b | PE does not support common transport large systems |
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| 1b | PE supports common transport large systems |
3 | EXTENDED_FEA |
| PE has extended features list; the extended features pointer is valid. |
| TURES |
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EXTENDED_ADD |
| Indicates the number address bits supported by the PE both as a source and target of an operation. | |
| RESSING_SUPP |
| All PEs shall at minimum support 34 bit addresses. Encodings other than below are reserved. |
| ORT |
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| 111b | PE supports 66, 50 and 34 bit addresses |
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| 101b | PE supports 66 and 34 bit addresses |
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| 011b | PE supports 50 and 34 bit addresses |
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| 001b | PE supports 34 bit addresses |
170 | Serial RapidIO (SRIO) |
| SPRU976 |