Quad Serial Peripheral Interface (QuadSPI)
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor 1025
30.4.3.19 Serial Flash Mode Status Register (QSPI_SFMSR)
The QSPI_SFMSR register provides all available status information about SFM command execution and
arbitration, the RX Buffer and TX Buffer and the AHB Buffer.
Address: QSPI_BASE + 0x158 Write: Anytime
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R 0 0 0 0 0 0 0 0
ARMB
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R 0
ARSZ
0 0
ARIC
W
Reset 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1
Figure 30-18. AMBA Control Register (QSPI_ACR)
Table 30-31. QSPI_ACR field descriptions
Field Description
ARMB AMBA Read Mode Byte. Instruction code option for ARIC for continuos mode (Ta bl e 30-53, M7-M0).
ARSZ AMBA Read Size. Defines size of read burst to the external serial flash device for any starting address
not found in the FIFO by a new AMBA AHB read access. The number of bytes read from the external
serial flash device is the value in ARSZ
* 4. Legal values for ARSZ are in the range from 1 to 16,
resulting in 4 up to 64 bytes read from the external serial flash.
ARIC AMBA Read Instruction Code. Selects the read command to be used for any read access to the
external serial flash device.
The reset value of the ARIC field is the READ_DATA command with a size of 4 bytes.
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