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7.7 What activation triggers are available and how are they selected?
• Trigger selection
• Activation triggers are broadly grouped into software triggers, internal triggers and external triggers.
• Software triggers work at all times.
• Internal and external trigger availability depends on each device specification.
An
trigger
is
set
(GCN1.TSEL2[3:0]), and (GCN1.TSEL3[3:0]).
Triggers are selectable for PPG0, PPG1, PPG2, and PPG3 independently.
Internal Trigger
To select the EN0 bit of the GCN20 register
To select the EN1 bit of the GCN20 register
To select the EN2 bit of the GCN20 register
To select the EN3 bit of the GCN20 register
To select reload timer 0
To select reload timer 1
External Trigger
To select the external trigger on GP14_0
To select the external trigger on GP14_1
To select the external trigger on GP14_2
To select the external trigger on GP14_3
Triggers are selectable for PPG4, PPG5, PPG6, and PPG7 independently.
Internal Trigger
To select the EN0 bit of the GCN21 register
To select the EN1 bit of the GCN21 register
To select the EN2 bit of the GCN21 register
To select the EN3 bit of the GCN21 register
To select reload timer 2
To select reload timer 3
External Trigger
To select the external trigger on GP14_4
To select the external trigger on GP14_5
To select the external trigger on GP14_6
To select the external trigger on GP14_7
using
the
trigger
specification
bits
(GCN1.TSEL0[3:0]),
PPG0
PPG1
Internal Trigger Specification Bit
TSEL0[3:0]
TSEL1[3:0]
Set "0000"
Set "0000"
Set "0001"
Set "0001"
Set "0010"
Set "0010"
Set "0011"
Set "0011"
Set "0100"
Set "0100"
Set "0101"
Set "0101"
PPG0
PPG1
External Trigger Specification Bit
TSEL0[3:0]
TSEL1[3:0]
Set "1000"
Set "1000"
Set "1001"
Set "1001"
Set "1010"
Set "1010"
Set "1011"
Set "1011"
PPG4
PPG5
Internal Trigger Specification Bit
TSEL0[3:0]
TSEL1[3:0]
Set "0000"
Set "0000"
Set "0001"
Set "0001"
Set "0010"
Set "0010"
Set "0011"
Set "0011"
Set "0100"
Set "0100"
Set "0101"
Set "0101"
PPG4
PPG5
External Trigger Specification Bit
TSEL0[3:0]
TSEL1[3:0]
Set "1000"
Set "1000"
Set "1001"
Set "1001"
Set "1010"
Set "1010"
Set "1011"
Set "1011"
Chapter 39 Programmable Pulse Generator
(GCN1.TSEL1[3:0]),
PPG2
PPG3
TSEL2[3:0]
TSEL3[3:0]
Set "0000"
Set "0000"
Set "0001"
Set "0001"
Set "0010"
Set "0010"
Set "0011"
Set "0011"
Set "0100"
Set "0100"
Set "0101"
Set "0101"
PPG2
PPG3
TSEL2[3:0]
TSEL3[3:0]
Set "1000"
Set "1000"
Set "1001"
Set "1001"
Set "1010"
Set "1010"
Set "1011"
Set "1011"
PPG6
PPG7
TSEL2[3:0]
TSEL3[3:0]
Set "0000"
Set "0000"
Set "0001"
Set "0001"
Set "0010"
Set "0010"
Set "0011"
Set "0011"
Set "0100"
Set "0100"
Set "0101"
Set "0101"
PPG6
PPG7
TSEL2[3:0]
TSEL3[3:0]
Set "1000"
Set "1000"
Set "1001"
Set "1001"
Set "1010"
Set "1010"
Set "1011"
Set "1011"
7.Q & A
815
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