Power Up Sequence
recommends the following power up sequence when powering s:
- Power up
VCCandVCCA_xxfirst. - When
VCCandVCCA_xxare stable, power up all VCCIO pins. There is no specific timing delay between the VCCIO pins. - Apply power to
VCC12A_MIPI_TX,VCC12A_MIPI_RX, andVCC25A_MIPIat least tMIPI_POWER afterVCCis stable.Important: Ensure the power ramp rate is within VCCIO/10 V/ms to 10 V/ms. - After all power supplies are stable, hold
CRESET_Nlow for a duration of tCRESET_N before assertingCRESET_Nfrom low to high to trigger active SPI programming (the loads the configuration data from an external flash device). - FPGA configuration can begin after there has been a tDMIN minimum
delay after
CRESET_Ngoes high (see SPI Passive and JTAG for the delay specification).
When you are not using the GPIO, MIPI or PLL resources, connect the pins as shown in the following table.