关于TLV320AIC23的操作

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lfzhou1006| 助理工程师

楼主 | 2011-10-10 15:51 | 只看该作者回帖奖励

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ic, AI, McASP, hm, se

我在DM642里面对TLV320AIC23进行Transmit操作时，遇到一个问题。代码如下，各同步时钟信号AFSX、ACLKX、AHCLKX由AIC23提供。

MCASP_ConfigSrctl MysrctlRegs = {

   0x00000009, //AXR00=Xmt

   0x00000000, //AXR01=Rcv

   0x00000000, //AXR02=Xmt

   0x00000000, //AXR03=Rcv

   0x00000000, //AXR04=Xmt

   0x00000000, //AXR05=Rcv

   0x00000000, //AXR06=Xmt

   0x00000000, //AXR07=Rcv

};

hMcasp = MCASP_open(MCASP_DEV0,MCASP_OPEN_RESET);



//1: reset McASP to default values

MCASP_reset(hMcasp);

//2a: Leave PWRDEMU at default.

//2b: Receiver registers:

//2c: Transmit register:

MCASP_RSETH(hMcasp, XMASK, 0x0000FFFF);

MCASP_RSETH(hMcasp, XFMT,    0x00018070);

MCASP_RSETH(hMcasp, AFSXCTL,  0x00000111);

MCASP_RSETH(hMcasp, ACLKXCTL, 0x000000C0);

MCASP_RSETH(hMcasp, AHCLKXCTL,0x00000030);

MCASP_RSETH(hMcasp, XTDM,    0xFFFFFFFF);

MCASP_RSETH(hMcasp, XINTCTL,  0x00000020);

MCASP_RSETH(hMcasp, XCLKCHK,  0x00000000);

//2d: Serialize registers: SRCTL[n]

MCASP_configSrctl(hMcasp, &MysrctlRegs);

//2e: Global registers:$FUNC,PDIR,DITCTL,DLBCTL,AMUTE.

MCASP_RSETH(hMcasp, PFUNC, 0x00000000);

MCASP_RSETH(hMcasp, PDIR,  0x0200FF55);

MCASP_RSETH(hMcasp, DITCTL,0x00000000);

MCASP_RSETH(hMcasp, DLBCTL,0x00000000);

MCASP_RSETH(hMcasp, AMUTE, 0x00000000);

//3:Start high-frequency serial clock AHCLKR

MCASP_enableHclk(hMcasp, MCASP_XMT);

while(!(MCASP_FGETH(hMcasp, GBLCTL, XHCLKRST)));

//4: Start serial clock ACLKR.If external, skipped

//MCASP_enableClk(hMcasp, MCASP_RCV);

//while(!(MCASP_FGETH(hMcasp, GBLCTL,RCLKRST)));

//MCASP_enableClk(hMcasp, MCASP_XMT);

//while(!(MCASP_FGETH(hMcasp, GBLCTL, XCLKRST)));

//5: Enable receive interrupt

MCASP_RSETH(hMcasp,XINTCTL,0x00000020); //enable XDATA interrupt

//6: Activate serializers

MCASP_RSETH(hMcasp,XSTAT,0x0000FFFF);

MCASP_enableSers(hMcasp, MCASP_XMT);

while(!(MCASP_FGETH(hMcasp, GBLCTL, XSRCLR)));

//7: Verify that all transmit buffers are serviced.Ignored.

while(MCASP_FGETH(hMcasp, XSTAT, XDATA));

//8: Release machines from reset

MCASP_enableSm(hMcasp, MCASP_XMT);

while(!(MCASP_FGETH(hMcasp, GBLCTL, XSMRST)));

//9: Release frame sync generators from reset

MCASP_enableFsync(hMcasp, MCASP_XMT);

while(!(MCASP_FGETH(hMcasp, GBLCTL, XFRST)));

为什么我的代码在执行到第六步时，即启动serializers时，程序就停下来了。检查了很久，都没有找到原因，很是郁闷。望大家帮我看看问题出在哪里。谢谢了！

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