UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
308 of 1269
NXP Semiconductors
UM10503
Chapter 16: LPC43xx Global Input Multiplexer Array (GIMA)
[1]
To configure the GIMA inputs for the timers and SCT, set the CTOUTCTRL bit in CREG6 (
). This bit controls whether the
SCT outputs are ORed with the timer match output or whether the SCT outputs only are considered.
16.3.2 GIMA clock synchronization
The clock synchronization control for each GIMA output consists of five stages
(
):
1. Input selection
2. Input inversion: inverts the path between source and destination.
3. Asynchronous capture
4. Synchronization to peripheral clock
5. Pulse generation
26
Event router input 14
SCT output 6 or T1
match channel 2
SGPIO12
T1 match
channel 2
-
27
Event router input 16
SCT output 14 or T3
match channel 2
T3 match
channel 2
-
-
28
ADC0 and ADC1 start0
input (ADC CR register
START bits = 0x2)
SCT output 15 or T3
match channel 3
T0 match
channel 0
-
-
29
ADC0 and ADC1 start1
input (ADC CR register
bit START = 0x3)
SCT output 8 or T2
match channel 0
T2 match
channel 0
-
-
Table 148. GIMA outputs
GIMA
output
GIMA output
connected to
GIMA inputs
Reference
Fig 34. GIMA input stages
Q
Q
SET
CLR
D
Q
Q
SET
CLR
D
Q
Q
SET
CLR
D
Q
Q
SET
CLR
D
output
input
input
output_clk
(peripheral)
(peripheral clock)
SELECT
INV
EDGE
SYNCH
PULSE