2.2.3. Sources and Probes
The design example uses multiple instances of In-System Sources and Probes IPs (ISSP). These IP instances are mainly used to control the resets, and to capture status. The following tables summarize the different ISSP instances and their functions. For more information, refer to Design Debugging Using In-System Sources and Probes.
Remember: In the following tables, n = number of channels, up to 4.
Port Name | Width | Description |
---|---|---|
source | 1 + 3*n |
Used to control different resets.
|
probe | 1 + 3*n | Read back the same signals from source. |
Port Name | Width | Description |
---|---|---|
source | 1 | Unused |
probe | 1 | iopll_sclk_locked – PLL lock status from IOPLL that generates sampling_clk. |
Port Name | Width | Description |
---|---|---|
source | 1*n | Unused |
probe | 1*n | checker_pass—asserted when the test is completed without error. |
Port Name | Width | Description |
---|---|---|
source | 1*n | restart—resets the pattern generator/checker. |
probe | 20*n | rt_count—captures the value of counter_out from the Round Trip Counter module. |
Port Name | Width | Description |
---|---|---|
source | 1*n | Unused |
probe | 20*n |
Captures various status signals:
|