Octal SPI Register Boot Settings

Versal ACAP Technical Reference Manual (AM011)

Document ID
AM011
Release Date
2022-04-26
Revision
1.4 English

The BootROM sets configuration registers that apply to each boot mode. For octal SPI boot mode, the BootROM sets the registers to the initial values shown in the following table.

Table 1. BootROM Initialization for Octal SPI
Register Name Base Address Register Value Description
OSPI_REF_CTRL 0xF126_0120 0x0100_0B00 Select PPLL divided by 11 (DIVISOR), clock enabled
MIO_Bank0_Schmitt_En 0xF106_010C 0x0000_17BF Enable Schmitt on OSPI MIO pins
MIO_Bank0_Tristate 0xF106_0200 0x03FF_E840 Disable 3-state override on OSPI MIO pins
RST_OSPI 0xF126_0304 0x0000_0000 OSPI RST not asserted
OSPI_AXI_Sel 0xF106_0504 0x0000_0001 OSPI selected
PMCPLL_CTRL 0xF126_0040 0x0002_4800 PMC PLL (PPLL) setup uses reset defaults ( REF_CLK multiplied by 72 (FBDIV) and divided by 4 (CLKOUTDIV))