smit LocalLink header words. The relevant LocalLink header words are described in brief below. Refer to the XPS_LL_TEMAC v1.00a hardware specification for more details.<p>
<h4>LocalLink header word 3:</h4>
<p>
<pre>
   Bits    31 (MSB): Transmit Checksum Enable: 1 - enabled, 0 - disabled
   Bits  0-30 (LSB): Reserved
   </pre><p>
<h4>LocalLink header word 4:</h4>
<p>
<pre>
   Bits 16-31 (MSB): Transmit Checksum Insertion Point: Frame offset where the
                     computed checksum value is stored, w