Quad 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 quad SPI boot mode, the BootROM sets the registers to the initial values shown in the following table.

Table 1. BootROM Initialization for Quad SPI
Register Name Base Address Register Value Description
QSPI_REF_CTRL 0xF126_0118 0x0100_0B00 Select PPLL divided by 11 (DIVISOR), clock enabled
MIO_Bank0_Schmitt_En 0xF106_010C 0x0000_1FBF Enable Schmitt on QSPI MIO pins
OSPI_AXI_Sel 0xF106_0504 0x0000_0000 QSPI selected
MIO_Bank0_Tristate 0xF106_0200 0x03FF_E040 Disable 3-state override on QSPI MIO pins
RST_QSPI 0xF126_0300 0x0000_0000 QSPI RST not asserted
Mode 0xF103_0144 0x0000_0001 Generic QSPI mode
GQSPI_Cfg 0xF103_0100 0x8008_0008 QSPI_REF_CLK is divided by 4 (BAUD_RATE_DIV)
GQSPI_En 0xF103_0114 0x0000_0001 Generic QSPI controller enabled
PMCPLL_CTRL 0xF126_0040 0x0002_4800 PMC PLL (PPLL) setup uses reset defaults (REF_CLK multiplied by72 (FBDIV) and divided by 4 (CLKOUTDIV)