用户手册
C166S V2
中央处理单元
指令预取。该PMU地址保持稳定（T
n+4
），直到整个64位
双字可以缓冲（T
n+7
）中的96位的预取缓冲器一次。
T
n
PMU地址
I
a+16
PMU数据64位我
d+1
预取
96位缓冲
取
指令
卜FF器
FIFO内容
I
n+6
...
I
n+9
I
n+5
T
n+1
I
a+24
I
d+2
I
n+9
...
I
n+11
I
n+6
I
n+7
I
n+8
I
n+4
...
I
n+8
I
n+5
I
n+4
I
n+3
I
n+2
I
n+1
I
n
T
n+2
I
a+32
I
d+3
I
n+12
I
n+13
I
n+9
I
n+10
I
n+11
I
n+5
...
I
n+11
I
n+6
I
n+5
I
n+4
I
n+3
I
n+2
I
n+1
T
n+3
I
a+40
I
d+4
I
n+14
I
n+15
I
n+12
I
n+13
I
n+6
...
I
n+13
I
n+7
I
n+6
I
n+5
I
n+4
I
n+3
I
n+2
T
n+4
I
a+40
I
d+5
I
n+15
...
I
n+19
I
n+14
T
n+5
I
a+40
I
d+5
I
n+15
...
I
n+19
-
T
n+6
I
a+40
I
d+5
I
n+16
...
I
n+19
I
n+15
T
n+7
I
a+48
I
d+5
I
n+17
...
I
n+19
I
n+16
T
n+8
I
a+48
I
d+7
I
n+18
...
I
n+21
I
n+17
I
n+3
...
I
n+5
I
n+7
...
I
n+14
I
n+7
I
n+6
I
n+6
I
n+5
I
n+4
I
n+3
I
n+7
...
I
n+14
I
n+8
I
n+7
I
n+6
I
n+6
I
n+5
I
n+4
I
n+8
...
I
n+15
I
n+9
I
n+8
I
n+7
I
n+6
I
n+6
I
n+5
I
n+9
...
I
n+16
I
n+10
I
n+9
I
n+8
I
n+7
I
n+6
I
n+6
I
n+10
...
I
n+17
I
n+11
I
n+10
I
n+9
I
n+8
I
n+7
I
n+6
从FIFO我取
n+4
解码
地址
内存
执行
回写
图2-4
I
n+3
I
n+2
I
n+1
I
n
顺序指令执行
用户手册
2-25
V 1.7, 2001-01
