
Queued Serial Peripheral Interface (QSPI)
Freescale Semiconductor
30-7
30.3.5
QSPI Address Register (QAR)
The QAR is used to specify the location in the QSPI RAM that read and write operations affect. As shown
in
, the transmit RAM is located at addresses 0x0 to 0xF, the receive RAM
is located at 0x10 to 0x1F, and the command RAM is located at 0x20 to 0x2F. (These addresses refer to
the QSPI RAM space, not the device memory map.)
NOTE
A read or write to the QSPI RAM causes QAR to increment. However, the
QAR does not wrap after the last queue entry within each section of the
RAM. The application software must manage address range errors.
Table 30-6. QIR Field Descriptions
Field
Description
15
WCEFB
Write collision access error enable. A write collision occurs during a data transfer when the RAM entry containing
the current command is written to by the CPU with the QDR. When this bit is asserted, the write access to QDR
results in an access error.
14
ABRTB
Abort access error enable. An abort occurs when QDLYR[SPE] is cleared during a transfer. When set, an attempt to
clear QDLYR[SPE] during a transfer results in an access error.
13
Reserved, must be cleared.
12
ABRTL
Abort lock-out. When set, QDLYR[SPE] cannot be cleared by writing to the QDLYR. QDLYR[SPE] is only cleared by
the QSPI when a transfer completes.
11
WCEFE
Write collision (WCEF) interrupt enable.
0 Write collision interrupt disabled
1 Write collision interrupt enabled
10
ABRTE
Abort (ABRT) interrupt enable.
0 Abort interrupt disabled
1 Abort interrupt enabled
9
Reserved, must be cleared.
8
SPIFE
QSPI finished (SPIF) interrupt enable.
0 SPIF interrupt disabled
1 SPIF interrupt enabled
7–4
Reserved, must be cleared.
3
WCEF
Write collision error flag. Indicates that an attempt has been made to write to the RAM entry that is currently being
executed. Writing a 1 to this bit (w1c) clears it and writing 0 has no effect.
2
ABRT
Abort flag. Indicates that QDLYR[SPE] has been cleared by the user writing to the QDLYR rather than by completion
of the command queue by the QSPI. Writing a 1 to this bit (w1c) clears it and writing 0 has no effect.
1
Reserved, must be cleared.
0
SPIF
QSPI finished flag. Asserted when the QSPI has completed all the commands in the queue. Set on completion of
the command pointed to by QWR[ENDQP], and on completion of the current command after assertion of
QWR[HALT]. In wraparound mode, this bit is set every time the command pointed to by QWR[ENDQP] is completed.
Writing a 1 to this bit (w1c) clears it and writing 0 has no effect.
MCF5329 Reference Manual, Rev 3
Summary of Contents for MCF5329
Page 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...