TMD4903 Datasheet, PDF (65/86 Pages) ams AG – Color and Proximity Sensor Module with mobeam

TMD4903 − Application Information
Figure 76:
Number of Repeated Sub-Pattern Loops
Protocols with Repeated
Sub-Patterns
ID LE
ST AR T
Loop IPNL Times
Loop ISNL Times
“Run-once”
Sub-
pattern
Repeat
Sub-
pattern
Pause
ID LE
Protocols with “Repeated” Sub-Patterns: The blue box represents a repeated part of a pattern. These
sub-patterns begin at an address within the red box and burst until the end of the pattern is encountered. The
repeated sub-pattern can be reiterated 1 to 254 times, or continuously.
Digital Logic
The Simplified Flow Diagram depicts the basic premise of how
an entire waveform is generated. Protocols of the form
described in Figure 75 and Figure 76 can be generated using
the mechanism depicted below. Any functionality show in the
red, blue, or green boxes can be activated or omitted via control
register settings or special operators in pattern RAM to produce
virtually any waveform.
Typically, patterns are built by assembling pulses and gaps in a
particular order. To this end the length of time for each pulse
and gap, measured in multiples of carrier periods, as well as the
order of each pulse/gap pair are specified in the
equipment/button data. The remote control engine can directly
accept the data in this format. Pulse/Gap order is stored in
pattern RAM and pulse/gap time durations are stored in the
Timewords table.
ams Datasheet
[v1-12] 2015-May-14
Page 65
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