Visible to Intel only — GUID: sam1412835918956
Ixiasoft
Visible to Intel only — GUID: sam1412835918956
Ixiasoft
6.7.2. Delay Elements
Delay Element | .qsf Assignment |
---|---|
Input Delay Element | set_instance_assignment –to <PIN> -name INPUT_DELAY_CHAIN <0..63> |
Output Delay Element | set_instance_assignment –to <PIN> -name OUTPUT_DELAY_CHAIN <0..15> |
Output Enable Delay Element | set_instance_assignment –to <PIN> -name OE_DELAY_CHAIN <0..15> |
The Agilex™ M-series device datasheet provides information on delay chain specification and offset settings across fast and slow models. The Fast Model specifies the delay value when the maximum delay chain offset setting is selected using the fastest process. The Slow Model specifies the delay value when the maximum delay chain offset setting is selected using the slowest process within a specific speed grade.
For example, if you assign input delay chain setting to #10 using an Agilex™ M-series device with -1 speedgrade:
Minimum delay value = 10*Delay specification for Fast Model/63 = x ns
Maximum delay value = 10*Delay specification for -1V Slow Model/63 = y ns
The input delay ranges from x ns to y ns when -1 device speedgrade is selected in your design.