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The DSP uses the same reset sources than those mapped to the DSP C66x CorePac; i.e. DSP C66x CorePac reset inputs will be pinned out as DSP system reset inputs.
The Table 5-4 summarizes the DSP hardware reset inputs and their functional descriptions.
| DSP1 reset input | DSP1 reset "done" output to PRCM | Description |
|---|---|---|
| DSP1_PWR_RST | - | This is power-on reset signal used inside DSP1 to reset mainly the emulation logic. It resets the entire DSP1 logic. |
| DSP1_RST | - | Reset signal used to reset all logic inside DSP1 except Emulation logic. |
| DSP1_LRST | - | Reset applied ONLY to the C66x CPU inside DSP1 |
| - | DSP1_LRST_DONE | Indicates completion of the DSP1 local C66x CPU reset to device PRCM |
See also the Section 5.2 for more information on the PRCM reset sources to DSP reset inputs connectivity.
Refer to the Section 3.5.6.6, DSP1 Subsystem Power-on Reset Sequence in the chapter, Power, Reset and Clock Manamgement for more details on the DSP1 power-on reset sequence, respectively.
In the case of DSP1 recovery from the “Powerdown-grid off”, a full power-on-reset sequence is required before re-booting and resuming functional operation.