Flash Memory
MPC5606S Microcontroller Reference Manual, Rev. 7
656
Freescale Semiconductor
bkn_fl_abort
signal remains asserted until
bkn_fl_done
is driven high. For this setting, there are
no notification interrupts generated.
•
Bn_RWWC = 0b100
— This setting provides the basic stall-while-write capability with the ability to abort any
program/erase operation if a read access is initiated plus the generation of an abort notification
interrupt. For this setting, the read request is captured and retried as described for the basic
stall-while-write, the program/erase operation is aborted by the PFLASH2P_LCA’s assertion
of the
bkn_fl_abort
signal and an abort notification interrupt generated. There are two abort
notification interrupts, one for each bank.
As detailed above, there are a total of 4 interrupt requests associated with the stall-while-write
functionality. These interrupt requests are captured as part of ECSM’s Interrupt Register and logically
summed together to form a single request to the interrupt controller.
For example timing diagrams of the stall-while-write and abort-while-write operations, see
and
respectively.
17.4.4.12 Wait-State emulation
Emulation of other memory array timings are supported by the PFLASH2P_LCA on read cycles to the
flash. This functionality may be useful to maintain the access timing for blocks of memory which were
used to overlay flash blocks for the purpose of system calibration or tuning during code development.
The PFLASH2P_LCA inserts additional wait-states according to the values of
haddr[28:24]
. When these
inputs are non-zero, additional cycles are added to AHB read cycles. Write cycles are not affected. In
addition, no page read buffer prefetches are initiated, and buffer hits are ignored.
show the relationship of
haddr[28:24]
to the number of additional primary
wait-states. These wait-states are applied to the initial access of a burst fetch or to single-beat read accesses
on the AHB system bus.
Table 17-67. PFLASH2P_LCA Stall-While-Write interrupts
MIR[n]
Interrupt Description
ECSM.MIR[7]
Platform flash bank0 abort notification, MIR[FB0AI]
ECSM.MIR[6]
Platform flash bank0 stall notification, MIR[FB0SI]
ECSM.MIR[5]
Platform flash bank1 abort notification, MIR[FB1AI]
ECSM.MIR[4]
Platform flash bank1 stall notification, MIR[FB1S1]
Содержание MPC5602S
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Страница 82: ...Memory Map MPC5606S Microcontroller Reference Manual Rev 7 80 Freescale Semiconductor...
Страница 112: ...Signal Description MPC5606S Microcontroller Reference Manual Rev 7 110 Freescale Semiconductor...
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Страница 524: ...Enhanced Direct Memory Access eDMA MPC5606S Microcontroller Reference Manual Rev 7 522 Freescale Semiconductor...
Страница 546: ...Error Correction Status Module ECSM MPC5606S Microcontroller Reference Manual Rev 7 544 Freescale Semiconductor...
Страница 669: ...Flash Memory MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 667...
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Страница 882: ...LIN Controller LINFlex MPC5606S Microcontroller Reference Manual Rev 7 880 Freescale Semiconductor...
Страница 901: ...Memory Protection Unit MPU MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 899...
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Страница 955: ...Mode Entry Module MC_ME MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 953...
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Страница 1072: ...Quad Serial Peripheral Interface QuadSPI MPC5606S Microcontroller Reference Manual Rev 7 1070 Freescale Semiconductor...
Страница 1096: ...Reset Generation Module MC_RGM MPC5606S Microcontroller Reference Manual Rev 7 1094 Freescale Semiconductor...
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Страница 1213: ...System Integration Unit Lite SIUL MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 1211...
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