Texas Instruments SimpleLink CC2620 Technical Reference Manual page 1482

RF Core HAL
23.3.2.5.1 Triggers
Triggers can be used to set up a start time, or for other specific purposes in specific radio operation
commands. A common trigger byte definition exists, defined in
Bit Index Field
0–3 triggerType
4 bEnaCmd
5–6 triggerNo
7 pastTrig
The triggerType can take the values listed in
Number Name
0 TRIG_NOW
1 TRIG_NEVER
2 TRIG_ABSTIME
3 TRIG_REL_SUBMIT
4 TRIG_REL_START
5 TRIG_REL_PREVSTART
6 TRIG_REL_FIRSTSTART
7 TRIG_REL_PREVEND
8 TRIG_REL_EVT1
9 TRIG_REL_EVT2
10 TRIG_EXTERNAL
A 32-bit time parameter is used together with all triggers except for TRIG_NOW and TRIG_NEVER.
Absolute timing uses the value of the 32-bit RTC. Relative timing uses the number of RTC ticks. The
external trigger uses an identifier of source and edge as defined in
1482
Radio
Table 23-3. Format of Trigger Definition Byte
Description
The type of trigger
0: No alternative trigger command.
1: CMD_TRIGGER can be used as an alternative trigger.
The trigger number of the CMD_TRIGGER command that triggers this action.
0: A trigger in the past is never triggered, or for start of commands, give an error.
1: A trigger in the past is triggered as soon as possible.
Table
Table 23-4. Supported Trigger Types
Table 23-5. Fields of Time Parameter
for External Event Trigger
Bit Index Field
0–1
2–3 inputMode
4–7
8–12 source
13–31
Copyright © 2015, Texas Instruments Incorporated
Table 23-3.
23-4. Other values are reserved.
Description
Now (not applicable to end triggers)
Never (except possibly by CMD_TRIGGER if bEnaCmd = 1)
At absolute time, given by timer parameter
At a time relative to the time the command was submitted
At a time relative to start of this command (not allowed for start triggers)
At a time relative to the start of the previous command
At a time relative to the start of the first command of the chain
At a time relative to the end of the previous command
At a time relative to event 1 of the previous command
At a time relative to event 2 of the previous command
On an external trigger input to the RAT
Table
Description
Reserved
Input mode
00: Rising edge
01: Falling edge
10: Both edges
11: Reserved
Reserved
22: RFC_GPI0
23: RFC_GPI1
Others: Reserved
Reserved
SWCU117C – February 2015 – Revised September 2015
www.ti.com
23-5.
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