ONDA Plus SOM/ONDA Plus Hardware/Power and Reset/PL initialization signals
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PL initialization signals[edit | edit source]
This page provides information about the Programmable Logic (PL) initialization signals: PS_PROGRAM_B, PS_INIT_B, and PS_DONE.
Please refer to UltraScale Architecture PCB Design User Guide for more information about the usage and configuration of the initialization circuit and signals. As described in the link, the user can initialize the PL using these PS signals.
ONDA Plus SOM signals are configured in the following way:
| Pin# | Pin name | Function | Notes |
|---|---|---|---|
| J1.A33 | PS_PROG_B | Signal to reset configuration block | Internal 10K Ω pull-up |
| J1.A34 | PS_INIT_B | Initialization completion indicator after POR | Internal 10K Ω pull-up |
| J1.A32 | PS_DONE | PL programmed DONE signal | Internal 10K Ω pull-up. It does not require any external pull-up or pull-down but can be used for connecting a user-led for a configuration completed indication (see for example ONDA EVK schematics).
These signals are referenced to the Bank 503 power rail, which operates at 1.8 V (see Processing System (PS) Bank Voltage). |
