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SRIO Registers
5.56 Processing Element Features CAR (PE_FEAT)
The processing element features CAR (PE_FEAT) is shown in Figure 119 and described in Table 127.
Figure 119. Processing Element Features CAR (PE_FEAT) - Address Offset 1010h
31 | 30 |
| 29 | 28 | 27 |
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| 24 |
BRIDGE | MEMORY | PROCESSOR | SWITCH |
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23 |
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| 16 |
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| Reserved |
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15 |
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| 8 |
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| Reserved |
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7 | 6 |
| 5 |
| 4 | 3 | 2 | 0 |
FLOW_ | RETRANSMIT_ | CRF_ | LARGE_ | EXTENDED_ |
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CONTROL_ |
| EXTENDED_ADDRESSING_SUPPORT | ||||||
SUPPRESS |
| SUPPORT | SUPPORT | FEATURES |
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SUPPORT |
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LEGEND: R = Read only; |
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Table 127. Processing Element Features CAR (PE_FEAT) Field Descriptions
| Bit | Field | Value | Description |
| 31 | BRIDGE |
| PE can bridge to another interface. Examples are PCI, |
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| proprietary processor buses, DRAM, etc. |
| 30 | MEMORY |
| PE has physically addressable local address space and can be |
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| accessed as an endpoint through |
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| space may be limited to local configuration Registers, or could be |
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| 29 | PROCESSOR |
| PE physically contains a local processor or similar device that |
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| executes code. A device that bridges to an interface that |
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| connects to a processor does not count (see bit 31). |
| 28 | SWITCH |
| PE can bridge to another external RapidIO interface. An internal |
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| port to a local endpoint does not count as a switch port. For |
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| example, a device with two RapidIO ports and a local endpoint is |
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| a two port switch, not a three port switch, regardless of the |
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| internal architecture. |
| Reserved | 0 | These | |
| 7 | FLOW_CONTROL_SUPPORT |
| PE supports congestion flow control mechanism |
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| 0 | PE does not support flow control |
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| 1 | PE supports flow control |
| 6 | RETRANSMIT_SUPPRESS |
| PE supports suppression of error recovery on packet CRC errors. |
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| 0 | PE does not support suppression |
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| 1 | PE supports suppression |
| 5 | CRF_SUPPORT |
| This bit indicates PE support for the Critical Request Flow (CRF) |
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| Function. |
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| 0 | PE does not support CRF Function |
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| 1 | PE supports CRF Function |
| 4 | LARGE_SUPPORT |
| Support of common transport large systems. |
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| 0 | PE does not support common transport large systems |
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| 1 | PE supports common transport large systems |
| 3 | EXTENDED_FEATURES |
| PE has extended features list; the extended features pointer is |
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| valid. |
186 | Serial RapidIO (SRIO) |
| SPRUE13A |