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IRCC Fiches technique(PDF) 8 Page - SMSC Corporation

No de pièce IRCC
Description  INFRARED COMMUNICATIONS CONTROLLER
PDF  79 Pages
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Fabricant  SMSC [SMSC Corporation]
Site Internet  http://www.smsc.com
Logo SMSC - SMSC Corporation

IRCC Fiches technique(HTML) 8 Page - SMSC Corporation

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8
OPERATION MODES
RAW IR
In Raw mode the state of the IR emitter and
detector can be directly accessed through the
host interface (Figure 3).
The IR emitter tracks the Raw Tx Control bit. For
example, depending on the state of the Tx
Polarity control a logic '1' may turn the LED on
and a logic '0' may turn the LED off. Care must
be taken in software to ensure that the LED is
not on continuously.
The Raw Rx Control bit represents the state of
the PIN diode. For example, depending on the
state of the Rx Polarity control a logic '1' may
mean no IR is detected, a logic '0' may mean IR
is being detected.
If an IR carrier is being
received, the Raw Rx Control bit will oscillate at
the carrier frequency.
If enabled, a Raw Mode Interrupt will be
generated when the Raw Rx Control bit
transitions to the active state, depending on the
state of the Rx Polarity control.
RAW Tx
Registers
Transition
Detect
Enable
Interrupt
Encoder/Decoder
RAW Rx
FIGURE 3 - RAW IR BLOCK DIAGRAM



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