Datasheet

PIC32MX5XX/6XX/7XX
DS60001156H-page 154  2009-2013 Microchip Technology Inc.
REGISTER 9-10: CHEHIT: CACHE HIT STATISTICS REGISTER
Bit
Range
Bit
31/23/15/7
Bit
30/22/14/6
Bit
29/21/13/5
Bit
28/20/12/4
Bit
27/19/11/3
Bit
26/18/10/2
Bit
25/17/9/1
Bit
24/16/8/0
31:24
R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x
CHEHIT<31:24>
23:16
R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x
CHEHIT<23:16>
15:8
R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x
CHEHIT<15:8>
7:0
R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x
CHEHIT<7:0>
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 31-0 CHEHIT<31:0>: Cache Hit Count bits
Incremented each time the processor issues an instruction fetch or load that hits the prefetch cache from a
cacheable region. Non-cacheable accesses do not modify this value.
REGISTER 9-11: CHEMIS: CACHE MISS STATISTICS REGISTER
Bit
Range
Bit
31/23/15/7
Bit
30/22/14/6
Bit
29/21/13/5
Bit
28/20/12/4
Bit
27/19/11/3
Bit
26/18/10/2
Bit
25/17/9/1
Bit
24/16/8/0
31:24
R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x
CHEMIS<31:24>
23:16
R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x
CHEMIS<23:16>
15:8
R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x
CHEMIS<15:8>
7:0
R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x
CHEMIS<7:0>
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 31-0 CHEMIS<31:0>: Cache Miss Count bits
Incremented each time the processor issues an instruction fetch from a cacheable region that misses the
prefetch cache. Non-cacheable accesses do not modify this value.