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ZYNQ Ultr FPGA Board AXU7EV User Manual
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PL_DDR4_BG0
IO_L7P_T1L_N0_QBC_AD13P_66
AK13
PL_DDR4_CAS_B
IO_L8N_T1L_N3_AD5N_66
AL10
PL_DDR4_CKE
IO_L15P_T2L_N4_AD11P_66
AG13
PL_DDR4_CS_B
IO_L9P_T1L_N4_AD12P_66
AK12
PL_DDR4_CLK_N
IO_L13N_T2L_N1_GC_QBC_66
AJ12
PL_DDR4_CLK_P
IO_L13P_T2L_N0_GC_QBC_66
AH12
Part 2.4: QSPI Flash
The FPGA core board ACU7EV is equipped with two 256MBit Quad-SPI
FLASH chip to form an 8-bit bandwidth data bus, the flash model is
MT25QU256ABA1EW9, which uses the 1.8V CMOS voltage standard. Due to
the non-volatile nature of QSPI FLASH, it can be used as a boot device for the
system to store the boot image of the system. These images mainly include
FPGA bit files, ARM application code, and other user data files. The specific
models and related parameters of QSPI FLASH are shown in Table 2-4-1.
Position
Model
Capacity
Factory
U2, U3
MT25QU256ABA1EW9
256Mbit
Winbond
Table 2-4-1: QSPI FLASH Specification
QSPI FLASH is connected to the GPIO port of the BANK500 in the PS
section of the ZYNQ chip. In the system design, the GPIO port functions of
these PS ports need to be configured as the QSPI FLASH interface. Figure
2-4-1 shows the QSPI Flash in the schematic.