PXD10RM Datasheet, PDF (1037/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

Address: QSPI_BASE + 0x158
Write: Anytime
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
R0 0 0 0 0 0 0 0
W
ARMB
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
R0
W
ARSZ
00
ARIC
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
ARMB
ARSZ
ARIC
Description
AMBA Read Mode Byte. Instruction code option for ARIC for continuos mode (Table 30-53, M7-M0).
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.
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.
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.
Freescale Semiconductor
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
30-33