Teledyne LeCroy USB Chief - File Based Decode Manual - Manual (Page 15)

11
C OMPUTER A CCESS T ECHNOLOGY C ORPORATION USB R EQUEST D EFINITION (. REQ ) F ILES
Reference Manual
Bitmap
Use Bitmap to define the decoding of bit data in a data field. The Bitmap defi-
nition also specifies the output of bit data in the decoding dialog window. The
Bitmap entry allows each bit value to be identified by a text string in the decoded
data output.
Bitmap entries are formatted as follows:
Bitmap=
{
<Bit#>=<string>
<Bit#>=<string>
...
}
This example is taken from the hub.req GET_STATUS definition.
Bytes(2,3)={
Endian=Little
Name=Port Change bits
Bitmap={
0=C_PORT_CONNECTION
1=C_PORT_ENABLE
2=C_PORT_SUSPEND
3=C_PORT_OVER_CURRENT
4=C_PORT_RESET
}
}
In the trace output, the decoded
data can be viewed by position-
ing the mouse cursor over the
Data field name. This action
causes the Data field's tool tip
window to be displayed. The
box contains details about the
data, including the decoded
bitmap information.
Figure 7: Data field pop-up information box