Table 59

+========-============================-===================+
|  Mode  |  Description               |    Type           |
|--------+----------------------------+-------------------|
|  000b  |  Combined header and data  |  Optional         |
|  001b  |  Vendor-specific           |  Vendor-specific  |
|  010b  |  Data                      |  Optional         |
|  011b  |  Descriptor                |  Optional         |
|  100b  |  Reserved                  |  Reserved         |
|  101b  |  Reserved                  |  Reserved         |
|  110b  |  Reserved                  |  Reserved         |
|  111b  |  Reserved                  |  Reserved         |
+=========================================================+