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📄 求助: slave fifo ep2 out 驱动程序开发网技术社区 - powered by phpwind_net.htm

📁 关于FIFO的一些设计资料
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            &nbsp; &nbsp; // 低电平有效<BR>SYNCDELAY;<BR><BR><BR><BR>&nbsp; EP1OUTCFG 
            = 0xA0; &nbsp; &nbsp; //EP1OUT VALID BULK<BR>&nbsp; SYNCDELAY; 
            <BR>&nbsp; EP1INCFG = 0xA0; &nbsp; &nbsp; &nbsp; //端点1 EP1IN VALID 
            BULK<BR>&nbsp; SYNCDELAY;<BR><BR><BR>EP2CFG = 0xA0; &nbsp; &nbsp; 
            &nbsp; &nbsp; &nbsp; // BUF[1:0]=00 for 4x buffering 
            已验证<BR><BR>SYNCDELAY; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // 
            <BR>EP6CFG = 0xE0; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // BUF[1:0]=00 
            for 4x buffering<BR>SYNCDELAY;<BR><BR><BR>SYNCDELAY;<BR>&nbsp; 
            <BR>EP6FIFOCFG = 0x09; &nbsp; &nbsp; &nbsp; &nbsp; // AUTOIN=1, 
            ZEROLENIN=1, WORDWIDE=1<BR>SYNCDELAY;<BR><BR>EP4CFG = 0x20; 
            <BR><BR>EP8CFG = 0x60; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // clear 
            valid bit<BR><BR>EP2AUTOINLENH = 
            0x02;<BR>SYNCDELAY;<BR>EP2AUTOINLENL = 
            0x00;<BR>SYNCDELAY;<BR><BR>EP6AUTOINLENH = 
            0x02;//已验证<BR>SYNCDELAY;<BR>EP6AUTOINLENL = 0x00;//已验证<BR>SYNCDELAY; 
            &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // <BR>FIFORESET = 0x80; &nbsp; 
            &nbsp; &nbsp; &nbsp; // activate NAK-ALL to avoid race 
            conditions<BR>SYNCDELAY; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
            // see TRM section 15.14<BR>FIFORESET = 0x02; &nbsp; &nbsp; &nbsp; 
            &nbsp; // reset, FIFO 2<BR>SYNCDELAY; &nbsp; &nbsp; &nbsp; &nbsp; 
            &nbsp; &nbsp; // <BR>FIFORESET = 0x04; &nbsp; &nbsp; &nbsp; &nbsp; 
            // reset, FIFO 4<BR>SYNCDELAY; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
            &nbsp; // <BR>FIFORESET = 0x06; &nbsp; &nbsp; &nbsp; &nbsp; // 
            reset, FIFO 6<BR>SYNCDELAY; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
            &nbsp; // <BR>FIFORESET = 0x08; &nbsp; &nbsp; &nbsp; &nbsp; // 
            reset, FIFO 8<BR>SYNCDELAY; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
            &nbsp; // <BR>FIFORESET = 0x00; &nbsp; &nbsp; &nbsp; &nbsp; // 
            deactivate NAK-ALL<BR>SYNCDELAY;<BR>REVCTL = 0x03;<BR><BR>OUTPKTEND 
            = 0x82;<BR>&nbsp; SYNCDELAY;<BR>OUTPKTEND = 0x82;<BR>&nbsp; 
            SYNCDELAY;<BR>OUTPKTEND = 0x82;<BR>&nbsp; SYNCDELAY;<BR>OUTPKTEND = 
            0x82;<BR>&nbsp; SYNCDELAY;<BR><BR>EP2FIFOCFG = 0x15; 
            <BR><BR>配置如上,用的是SLAVE FIFO 
            自动传输,可以通过EP6从FPGA里读数据,却无法用EP2写数据,<BR>请问各位高手,EP2的设置哪儿有问题?</SPAN><BR><!----></TD></TR>
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          <TD colSpan=5><!----><FONT color=red>[楼 主]</FONT> 
            <!----><B>Posted:</B>2006-05-24 14:31|</TD>
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