Texas Instruments TDC1000-GASEVM, User Manual, Page: 14 / 40

Clock Selection
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9 Clock Selection
In order to excite the transducer with its resonant frequency and to achieve the maximum energy transfer
and therefore generate a big echo, the EVM allows you to apply the external clock, use the onboard
oscillator, or to use the CPU clock.
For gas flow applications, we recommend using the CPU clock. The steps to select the CPU clock can be
seen in the following subsections.
9.1 Steps to Select the CPU Clock
1. On the TDC1000-GASEVM, place the JP6 Jumper on the CPU position
Figure 8. Place Jumper on JP6 to Use the CPU Clock
14 TDC1000-GASEVM and TDC1000-BSTEVM Kit User’s Guide SNIU026A – March 2015 – Revised December 2015
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