NXP Semiconductors LPC84x, User Manual

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User manual Rev. 1.0 — 16 June 2017 375 of 515
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Chapter 21: LPC84x SCTimer/PWM
21.4 Pin description
Remark:
Availability of inputs or outputs related to a particular peripheral function might
be package dependent.
SCTimer/PWM input signals may come from external pins and internal signals. These are
connected to the SCTimer/PWM via input multiplexers (
Table 384 ).
SCTimer/PWM outputs can be routed to multiple places and can be connected to both a
pin and an ADC trigger at the same time. See
Table 384 .
See Table 286 “SCT input mux registers 0 to 3 (SCT0_INMUX[0:3], address 0x4002 C020 (SCT0_INMUX0) to 0x4002 C02C
(SCT0_INMUX3)) bit description” to configure the SCTimer/PWM input multiplexers.
Fig 41. SCTimer/PWM connections
SCT
SCT0_INMUX0
0
SCT0_INMUX3
3
SCT output 3
6
4
SCT outputs 0 to 5
SCT
inputs
SCT_PIN[0:3]
SCT_OUT[0:6]
ADC_THCMP_IRQ
ACMP0 output
ARM_TXEV
DEBUG_HALTED
4
4
6
ADC_THCMP_IRQ
ACMP0 output
ARM_TXEV
DEBUG_HALTED
SWITCH
MATRIX
PINASSIGN[6:9]
ADC trigger
Table 384. SCTimer/PWM pin description
Function Type Connect to Use register Reference Description
SCT input 0,
SCT input 1,
SCT input 2,
SCT input 3,
SCT input 4 external
to pins or
internal one of the following:
SCT_PIN[0:3] through the
switch matrix, or internally to
the analog comparator output,
ADC threshold compare
interrupt, ARM TXEV SCT0_PERIPHINMUX
PINASSIGN6
PINASSIGN7 Table 286 ,
Table 187 ,
Table 188
SCT capture and
event inputs.
SCT_OUT0 external
to pins
pins through the switch matrix PINASSIGN7 Table 187 SCT match and PWM
output.
SCT_OUT1,
SCT_OUT2,
SCT_OUT3,
SCT_OUT4 external
to pins
and
internal pins through the switch matrix;
to ADC trigger PINASSIGN8 Table 188 SCT match and PWM
outputs. SCT_OUT3
and SCT_OUT4 can
be selected as ADC
input trigger.
SCT_OUT5 external
to pin pin through the switch matrix PINASSIGN9 Table 188 SCT match and PWM
output.
SCT_OUT6 external
to pin pin through the switch matrix PINASSIGN9 Table 188 SCT match and PWM
output.