pic32mx320f064h Microchip Technology Inc., pic32mx320f064h Datasheet - Page 41

• Manufacturer Part Number: pic32mx320f064h
• Description: 64/100-pin General Purpose, 32-bit Flash Microcontrollers
• Manufacturer: Microchip Technology Inc.

4.0
The Prefetch cache increases performance for appli-
cations executing out of the cacheable program flash
memory region by implementing instruction caching,
data caching, and instruction prefetching.
FIGURE 4-1:
© 2007 Microchip Technology Inc.
Note:
CTRL
PREFETCH CACHE
Reference Manual” (DS61132) for a
This data sheet summarizes the features of
the PIC32MX family of devices. It is not
intended to be a comprehensive reference
source. Refer to the “PIC32MX Family
detailed description of this peripheral.
Prefetch Ctrl
Cache Ctrl
Miss LRU
Bus Ctrl
Hit LRU
FSM
PREFETCH MODULE BLOCK DIAGRAM
Tag Logic
PreFetch
Pre-Fetch
Hit Logic
Tag
Advance Information
PFM
Address
Encode
Cache
Line
CTRL
4.1
• 16 Fully Associative Lockable Cache Lines
• 16-byte Cache Lines
• Up to 4 Cache Lines allocated to Data
• 2 Cache Lines with Address Mask to hold
• Pseudo LRU replacement policy
• All Cache Lines are software writable
• 16-byte parallel memory fetch
• Predictive Instruction Prefetch
repeated instructions
PIC32MX FAMILY
Features
Cache Line
Pre-Fetch
PreFetch
DS61143A-page 39
RDATA