Motorola MPC823e - Page 192

Instruction Cache
MOTOROLA MPC823e REFERENCE MANUAL 9-3
INSTRUCTION CACHE
9
Figure 9-1. Instruction Cache Organization Block Diagram
28 292721200
WORD SELECT
20
BIDIRECTIONAL MUX 4-> 1
20
128
HIT0
HIT
128
INSTRUCTION POINTER
8
. .
. .
. .
. .
SET0
SET1
SET255
SET254
COMP
L
R
U
A
R
R
A
Y
.
.
.
.
20
COMP
HIT1
TO LINE BUFFER/
FROM BURST BUFFER
2
MMU
WAY0
TAG0 W0 W1 w2 W3
VALID BIT
LOCK BIT
TAG1 W0 W1 W2 W3
TAG255 W0 W1 W2 W3
TAG254 W0 W1 W2 W3
. . . . . . . . . . . .
W2
WAY1 WAY2 WAY3
20
COMP
20
COMP
HIT2
HIT3
128
128
128
19