SWCU185G January 2018 – June 2024 CC1312PSIP , CC1312R , CC1352P , CC1352R , CC2642R , CC2642R-Q1 , CC2652P , CC2652PSIP , CC2652R , CC2652RB , CC2652RSIP , CC2662R-Q1
The following configuration is required to measure the time of high phase or low phase of an event source waveform. Use the sequence that follows:
Figure 20-16 illustrates a generic event source waveform.
The phase to measure is labeled A, and it is arbitrarily set to the high phase of the event source in Figure 20-16. The opposite phase, which is not measured, is labeled B. Table 20-24 lists the timing requirements for both of these phases.
Description | Label | Requirement | Condition |
---|---|---|---|
Minimum phase | t_minPhase | 292 ns | DDI_0_OSC:CTL0.ACLK_TDC_SRC_SEL = 0x0 |
Minimum phase | t_minPhase | 230 ns | DDI_0_OSC:CTL0.ACLK_TDC_SRC_SEL = (0x1 | 0x2) |
Minimum inverted-phase | t_minInvPhase | 126 ns | AUX_TDC:CTL.CMD = 0x1 |
Minimum inverted-phase | t_minInvPhase | 42 ns | AUX_TDC:CTL.CMD = 0x2 |
If AUX_TDC:CTL.CMD = 0x2, the event source level must equal the level of inverted phase until AUX_TDC:STAT.STATE < 5. Failure to fulfill this requirement makes the TDC conversion start too late.