UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
371 of 1269
NXP Semiconductors
UM10503
Chapter 18: LPC43xx Serial GPIO (SGPIO)
18.7.2 Pattern match
All slices feature pattern match functionality. This can be used for example to detect a
start code. To use this functionality, REG_SS must be programmed with the pattern to be
matched (Note that REG_SS will not be swapped with REG when POS reaches zero!).
The MATCH_MODE bit must be set to 1. The input data is now compared to the
programmed pattern. When a match is found the pattern match interrupt is raised.
E = external data input mode
8 = 8 slices concatenated mode
4 = 4 slices concatenated mode
2 = 2 slices concatenated mode
0 = 0 slices concatenated (self loop) mode
Fig 38. Concatenation interconnections
E
8
4
2
0
I
(8)
E
8
4
2
0
E
(4)
E
8
4
2
0
J
(9)
E
8
4
2
0
A
(0)
E
8
4
2
0
K
(10)
E
8
4
2
0
F
(5)
E
8
4
2
0
L
(11)
E
8
4
2
0
C
(2)
E
8
4
2
0
M
(12)
E
8
4
2
0
G
(6)
E
8
4
2
0
N
(13)
E
8
4
2
0
B
(1)
E
8
4
2
0
H
(7)
E
8
4
2
0
P
(15)
E
8
4
2
0
O
(14)
E
8
4
2
0
D
(3)
Examples: 4 input slices concatenated
2 output slices selfloop