Texas Instruments TMS320C645X - Manual (Page 170)

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5.68 Processing Element Features CAR (PE_FEAT)
SRIO Registers
Figure 124. Processing Element Features CAR (PE_FEAT)
31 30 29 28 27-16
BRIDG MEMO PROC SWIT Reserved
E RY ESSO CH
R
R- R- R- R- R-0x00
0x00 0x00 0x01 0x00
LEGEND: R = Read only; -n = value after reset
15-8 7 6 5 4 3 2-0
Reserved FLOW RETR CRF_ LARG EXTE EXTENDED_ADDRESS
_CON ANSMI SUPP E_SU NDED ING_SUPPORT
TROL T_SU ORT PPOR _FEAT
_SUP PPRE T URES
PORT SS
R-0x00 R- R- R- R- R- R-0x0001
0x00 0x00 0x00 0x00 0x01
LEGEND: R = Read only; -n = value after reset
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
non-maintenance (i.e., non-coherent read and write) operations. This local address space may be
limited to local configuration Registers, or could be on-chip SRAM, etc.
29 PROCESSOR PE physically contains a local processor or similar device that executes code. A device that bridges
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
count as a switch port. For example, a device with two RapidIO ports and a local endpoint is a two
port switch, not a three port switch, regardless of the internal architecture.
27-8 Reserved Reserved
7 FLOW_CONTRO PE supports congestion flow control mechanism
L_SUPPORT
0b PE does not support flow control
1b PE supports flow control
6 RETRANSMIT_S PE supports suppression of error recovery on packet CRC errors.
UPPRESS
0b PE does not support suppression
1b PE supports suppression
5 CRF_SUPPORT This bit indicates PE support for the Critical Request Flow (CRF) Function.
0b PE does not support CRF Function
1b PE supports CRF Function
4 LARGE_SUPPO Support of common transport large systems.
RT
0b PE does not support common transport large systems
1b PE supports common transport large systems
3 EXTENDED_FEA PE has extended features list; the extended features pointer is valid.
TURES
2-0 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
111b PE supports 66, 50 and 34 bit addresses
101b PE supports 66 and 34 bit addresses
011b PE supports 50 and 34 bit addresses
001b PE supports 34 bit addresses
Serial RapidIO (SRIO) 170 SPRU976 – March 2006
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