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MPC8280 датащи(PDF) 196 Page - Freescale Semiconductor, Inc

номер детали MPC8280
подробное описание детали  PowerQUICC??II Family Reference Manual
PDF  1386 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC8280 датащи(HTML) 196 Page - Freescale Semiconductor, Inc

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System Interface Unit (SIU)
MPC8280 PowerQUICC II Family Reference Manual, Rev. 1
4-24
Freescale Semiconductor
4.3.1.6
SIU Interrupt Vector Register (SIVEC)
The SIU interrupt vector register (SIVEC), shown in Figure 4-18, contains an 8-bit code representing the
unmasked interrupt source of the highest priority level.
The SIVEC can be read as either a byte, half word, or a word. When read as a byte, a branch table can be
used in which each entry contains one instruction (branch). When read as a half word, each entry can
contain a full routine of up to 256 instructions. The interrupt code is defined such that its two lsbs are
zeroes, allowing indexing into the table, as shown in Figure 4-19.
0
5
6
7
8
9
10
11
12
13
14
15
Field
Interrupt Code
00
00
00
00
00
Reset
0000_0000_0000_0000
R/W
R
Addr
0x10C04
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Field
0
00
00
00
00
00
00
00
0
Reset
0000_0000_0000_0000
R/W
R
Addr
0x10C06
Figure 4-18. SIU Interrupt Vector Register (SIVEC)



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