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TMG3992 датащи(PDF) 55 Page - OSRAM GmbH |
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TMG3992 датащи(HTML) 55 Page - OSRAM GmbH |
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55 / 96 page ![]() Page 54 ams Datasheet Document Feedback [v1-06] 2018-Feb-27 TMG3992 − Register Description Proximity Pulse Count and Length Register (PPULSE 0x8E) The Proximity Pulse Count Register sets Pulse Width modified current during a Proximity Pulse. The proximity pulse count register bits set the number of pulses to be output on the LDR pin. The Proximity Length register bits set the amount of time the LDR pin is sinking current during a proximity pulse. Figure 53: Proximity Pulse Count and Length Register Note(s): 1. The time described by PPLEN is the actual signal integration time. The LED will be activated slightly longer (typically 1.36 μs) than the integration time. 765 432 1 0 PPLEN PPULSE Field Bits Description PPLEN 7:6 Proximity Pulse Length. Sets the LED-ON pulse width during a Proximity LDR Pulse. FIELD VALUE LED ON 00 4μs 01 8μs 10 16μs 11 32μs PPULSE 5:0 Proximity Pulse Count. Specifies the number of Proximity pulses to be generated on LDR. Number of pulses is set by PPULSE value plus 1. |
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