xst.xmsgs

运用FPGA控制AD9957的操作

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_21</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_20</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_17</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_19</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_18</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_16</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_15</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_14</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_13</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_12</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_11</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_8</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_10</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_9</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_7</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_6</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_3</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_5</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_4</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_2</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_1</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">dout_0</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">serl</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1291" delta="unknown" >FF/Latch &lt;<arg fmt="%s" index="1">0</arg>&gt; is unconnected in block &lt;<arg fmt="%s" index="2">state_cur</arg>&gt;.
</msg>

<msg type="info" file="Xst" num="2387" delta="unknown" >HDL ADVISOR - A <arg fmt="%d" index="1">3</arg>-bit shift register was found for signal &lt;<arg fmt="%s" index="2">start_sync&lt;2&gt;</arg>&gt; and currently occupies <arg fmt="%d" index="3">3</arg> logic cells (<arg fmt="%d" index="4">1</arg> slices). Removing the set/reset logic would take advantage of SRL16 (and derived) primitives and reduce this to 1 logic cells (1 slices). Evaluate if the set/reset can be removed for this simple shift register. The majority of simple pipeline structures do not need to be set/reset operationally.
</msg>

<msg type="info" file="Xst" num="2387" delta="unknown" >HDL ADVISOR - A <arg fmt="%d" index="1">3</arg>-bit shift register was found for signal &lt;<arg fmt="%s" index="2">ser_start_sync&lt;2&gt;</arg>&gt; and currently occupies <arg fmt="%d" index="3">3</arg> logic cells (<arg fmt="%d" index="4">1</arg> slices). Removing the set/reset logic would take advantage of SRL16 (and derived) primitives and reduce this to 1 logic cells (1 slices). Evaluate if the set/reset can be removed for this simple shift register. The majority of simple pipeline structures do not need to be set/reset operationally.
</msg>

<msg type="info" file="Xst" num="2261" delta="unknown" >The FF/Latch &lt;<arg fmt="%s" index="1">state_cur_3</arg>&gt; in Unit &lt;<arg fmt="%s" index="2">modulator</arg>&gt; is equivalent to the following <arg fmt="%s" index="3">FF/Latch</arg>, which will be removed : <arg fmt="%s" index="4">&lt;state_cur_5&gt; </arg>
</msg>

<msg type="warning" file="Xst" num="1710" delta="unknown" >FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_37</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_38</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_39</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_40</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_41</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_42</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_43</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_44</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_45</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_46</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_47</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_48</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_49</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_50</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_51</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_53</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_54</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_55</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_56</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_57</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_58</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_59</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_60</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_61</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_62</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>

<msg type="warning" file="Xst" num="1895" delta="unknown" >Due to other FF/Latch trimming, FF/Latch  &lt;<arg fmt="%s" index="1">shift_data_63</arg>&gt; (without init value) has a constant value of <arg fmt="%d" index="2">0</arg> in block &lt;<arg fmt="%s" index="3">serial</arg>&gt;.
</msg>