
Cache
5-20
Freescale Semiconductor
The following tables present the same information as
, organized by the current state of the cache
the current state is invalid.
Table 5-6. Cache Line State Transitions (Current State Invalid)
Access
Response
Read miss
(C,W)I1 Read line from memory and update cache.
Supply data to processor.
Go to valid state.
Read hit
(C,W)I2 Not possible.
Write miss (copy-back)
CI3
Read line from memory and update cache.
Write data to cache.
Go to modified state.
Write miss (write-through)
WI3
Write data to memory.
Stay in invalid state.
Write hit (copy-back)
CI4
Not possible.
Write hit (write-through)
WI4
Not possible.
Cache invalidate
(C,W)I5 No action.
Stay in invalid state.
Cache push
(C,W)I6 No action.
Stay in invalid state.
Cache push
(C,W)I7 No action.
Stay in invalid state.
Table 5-7. Cache Line State Transitions (Current State Valid)
Access
Response
Read miss
(C,W)V1
Read new line from memory and update cache.
Supply data to processor. stay in valid state.
Read hit
(C,W)V2
Supply data to processor.
Stay in valid state.
Write miss (copy-back)
CV3
Read new line from memory and update cache.
Write data to cache.
Go to modified state.
Write miss (write-through)
WV3
Write data to memory.
Stay in valid state.
Write hit (copy-back)
CV4
Write data to cache.
Go to modified state.
Write hit (write-through)
WV4
Write data to memory and to cache.
Stay in valid state.
Cache invalidate
(C,W)V5
No action.
Go to invalid state.
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...