In 'Individual Flash Modes', the 3/4 address bytes (as
programmed in the instruction/operand in the sequence)
available for the flash address is determined by SFADR [23:0]
or SFADR [31:0]as given in the table above.
33.5.1 AHB Bus Access Considerations
It has to be noted that all logic in the QuadSPI module implementing the AHB Bus access
is designed to read the content of an external serial flash device. Therefore, the following
restrictions apply to the QuadSPI module with respect to accesses to the AHB bus.
• At present, the QuadSPI does not support AHB writes so any write access is
answered with the ERROR condition according to the AMBA AHB Specification.
No write occurs.
• Any AHB Command resulting in the assertion of the QSPI_FR[ABSEF] flag is
answered with the ERROR condition according to the AMBA_AHB specification.
The resulting AHB Command is ignored.
• AHB Bus access types fully supported are NONSEQ and BUSY.
• AHB access type SEQ is treated in the same way like NONSEQ. Refer to the AMBA
AHB Specification for further details.
33.5.2 Memory Mapped Serial Flash Data - Individual Flash Mode
on Flash A
Starting with address QSPI_AMBA_BASE the content of the first external serial flash
devices is mapped into the address space of the device containing the QuadSPI module.
Serial flash address byte address 0x0 corresponds to bus address QSPI_AMBA_BASE
with increasing order. Refer to the following table for the address mapping. The byte
ordering for 32 bit access is given in
and for 64 bit read access the byte
.
Table 33-10. Memory Mapped Individual Flash Mode - Flash A Address Scheme
Memory Mapped Address 32 Bit
Access
Memory Mapped Address 64 Bit
Access
Serial Flash Byte Address
Flash
Device
QSPI_AMB 0x00
QSPI_AMB 0x00
0x00_0000 to 0x00_0003
A1
QSPI_AMB 0x04
0x00_0004 to 0x00_0007
…
…
…
Table continues on the next page...
Flash memory mapped AMBA bus
MWCT101xS Series Reference Manual, Rev. 3, 07/2019
880
NXP Semiconductors
Summary of Contents for MWCT101 S Series
Page 2: ...MWCT101xS Series Reference Manual Rev 3 07 2019 2 NXP Semiconductors...
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Page 50: ...Conventions MWCT101xS Series Reference Manual Rev 3 07 2019 50 NXP Semiconductors...
Page 70: ...Aliased bit band regions MWCT101xS Series Reference Manual Rev 3 07 2019 70 NXP Semiconductors...
Page 78: ...Pinout diagrams MWCT101xS Series Reference Manual Rev 3 07 2019 78 NXP Semiconductors...
Page 96: ...WCT101xS safety concept MWCT101xS Series Reference Manual Rev 3 07 2019 96 NXP Semiconductors...
Page 130: ...Functional description MWCT101xS Series Reference Manual Rev 3 07 2019 130 NXP Semiconductors...
Page 284: ...Functional description MWCT101xS Series Reference Manual Rev 3 07 2019 284 NXP Semiconductors...
Page 430: ...Functional Description MWCT101xS Series Reference Manual Rev 3 07 2019 430 NXP Semiconductors...
Page 472: ...Application Information MWCT101xS Series Reference Manual Rev 3 07 2019 472 NXP Semiconductors...
Page 528: ...Module clocks MWCT101xS Series Reference Manual Rev 3 07 2019 528 NXP Semiconductors...
Page 634: ...SRAM configuration MWCT101xS Series Reference Manual Rev 3 07 2019 634 NXP Semiconductors...
Page 818: ...Functional description MWCT101xS Series Reference Manual Rev 3 07 2019 818 NXP Semiconductors...
Page 960: ...Functional description MWCT101xS Series Reference Manual Rev 3 07 2019 960 NXP Semiconductors...
Page 992: ...ADC calibration scheme MWCT101xS Series Reference Manual Rev 3 07 2019 992 NXP Semiconductors...
Page 1348: ...Functional description MWCT101xS Series Reference Manual Rev 3 07 2019 1348 NXP Semiconductors...
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Page 1514: ...Functional description MWCT101xS Series Reference Manual Rev 3 07 2019 1514 NXP Semiconductors...
Page 1726: ...Debug and security MWCT101xS Series Reference Manual Rev 3 07 2019 1726 NXP Semiconductors...
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