The Timing Set Index Editor page is used to view and edit all 64 Timing Sets. Each cell represents the timing information for a particular timing set. Each timing set is composed of 4 pairs of phase assert, phase return, window open, and window close parameter. The edge timing resolution of the entered value is equal to 1/8 of the period of the master clock frequency. For example, if the master clock period is set to 100MHz, then each of the phase assert, phase return, window open, and window close edge timing parameters can be set with a resolution of 1.25nSec, and the available values will be 0, 1.25, 2.5, 3.75, 5, 6.25, and 7.5 ns accordingly (for a clocks per vector setting of 1).
Virtual Panel –Timing Set Editor Page
The following controls are shown in the Timing Set Editor page:
Timing Set Editor Grid: This is the primary control to view and edit the timing set memory. The indexed timing set memory is divided into 64 sets of 4 groups each. Each group contains a Phase Assert, Phase Return, Window Open and Window Close time value. The resolution of the timing edge value is 0.25 nSec. In the default case of T0 period is set to 100 nSec, each of the phase assert, phase return, window open, and window close parameters can be set with a resolution of 0.25 nSec. The available values will be 0, 10, 20, 30, 40, 50, 60, 70, 80, and 90 nSec accordingly.
Write button: Write the timing set data from the grid control to the timing memory.
Read button: Read the timing set memory and show in the vector editor.
Relevant API functions: GtDio6xTimingSetMemoryWriteData and GtDio6xTimingSetMemoryReadData .
Global Edge Settings group box: The timing set engine generates 10 programmable edges that can be set from 0nSec to the current programmable system clock period, e.g. If the system clock was programmed to 100nSec, then each of the 10 edges can be programmed to any value between 0 to 100nSec with 0.25 nSec resolution. The user only needs to set those global values once, as the phase assert/return and window open/close are then associated with any of these eight values.
Set button: program all 10 Global Edge Settings.
Reset button: program all 10 Global Edge Settings to be in 1/10 interval from each other.
Relevant API functions: GtDio6xTimingSetEdgeSet.