TMS320C6678: 关于C6678 SRIO提供例程问题

YU CHI

Prodigy 120 points

Part Number: TMS320C6678

我现在阅读提供的demo device_srio_loopback.c 文件，函数 SrioDevice_init中代码，手册中寄存器是只读属性，为什么可以写入，手册中寄存器只有11个选项，但是代码为什么有14个输入，有的选项我没有找到

/* TODO: Configure the processing element features

* The SRIO RL file is missing the Re-transmit Suppression Support (Bit6) field definition */

peFeatures.isBridge = 0;

peFeatures.isEndpoint = 0;

peFeatures.isProcessor = 1;

peFeatures.isSwitch = 0;

peFeatures.isMultiport = 0;

peFeatures.isFlowArbiterationSupported = 0;

peFeatures.isMulticastSupported = 0;

peFeatures.isExtendedRouteConfigSupported = 0;

peFeatures.isStandardRouteConfigSupported = 1;

peFeatures.isFlowControlSupported = 1;

peFeatures.isCRFSupported = 0;

peFeatures.isCTLSSupported = 1;

peFeatures.isExtendedFeaturePtrValid = 1;

peFeatures.numAddressBitSupported = 1;

CSL_SRIO_SetProcessingElementFeatures (hSrio, &peFeatures);

CSL_IDEF_INLINE void CSL_SRIO_SetProcessingElementFeatures
(
CSL_SrioHandle hSrio,
SRIO_PE_FEATURES* ptrPEFeatures
)
{
Uint32 value = 0;

/* Initialize the various fields in the register */
CSL_FINS (value, SRIO_RIO_PE_FEAT_BRDG, ptrPEFeatures->isBridge);
CSL_FINS (value, SRIO_RIO_PE_FEAT_MEM, ptrPEFeatures->isEndpoint);
CSL_FINS (value, SRIO_RIO_PE_FEAT_PROC, ptrPEFeatures->isProcessor);
CSL_FINS (value, SRIO_RIO_PE_FEAT_SW, ptrPEFeatures->isSwitch);
CSL_FINS (value, SRIO_RIO_PE_FEAT_MULT_P, ptrPEFeatures->isMultiport);
CSL_FINS (value, SRIO_RIO_PE_FEAT_FLOW_ARB, ptrPEFeatures->isFlowArbiterationSupported);
CSL_FINS (value, SRIO_RIO_PE_FEAT_MC, ptrPEFeatures->isMulticastSupported);
CSL_FINS (value, SRIO_RIO_PE_FEAT_ERTC, ptrPEFeatures->isExtendedRouteConfigSupported);
CSL_FINS (value, SRIO_RIO_PE_FEAT_SRTC, ptrPEFeatures->isStandardRouteConfigSupported);
CSL_FINS (value, SRIO_RIO_PE_FEAT_FLOW_CTRL,ptrPEFeatures->isFlowControlSupported);
CSL_FINS (value, SRIO_RIO_PE_FEAT_CRF, ptrPEFeatures->isCRFSupported);
CSL_FINS (value, SRIO_RIO_PE_FEAT_CTLS, ptrPEFeatures->isCTLSSupported);
CSL_FINS (value, SRIO_RIO_PE_FEAT_EXT_FEA, ptrPEFeatures->isExtendedFeaturePtrValid);
CSL_FINS (value, SRIO_RIO_PE_FEAT_EXT_AS, ptrPEFeatures->numAddressBitSupported);

hSrio->RIO_PE_FEAT = value;
}