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IRCC 데이터시트(PDF) 12 Page - SMSC Corporation

부품명 IRCC
상세설명  INFRARED COMMUNICATIONS CONTROLLER
PDF  79 Pages
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제조업체  SMSC [SMSC Corporation]
홈페이지  http://www.smsc.com
Logo SMSC - SMSC Corporation

IRCC 데이터시트(HTML) 12 Page - SMSC Corporation

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12
Receive Carrier Sense
The Programmable Receive Carrier Sense
register is used to program the Consumer IR
decoder to detect the presence of IR energy in a
wide-to-narrow range of carrier frequencies. The
register is two bits wide.
The range values are shown in Table 11.
Carriers that fall outside of the Receive Carrier
range sensitivity “abort” the message; i.e., the
Abort bit is set, an EOM Interrupt is generated,
and the receiver is disabled. If the “Carrier Off”
bit is active, the Receive Carrier range sensitivity
is disabled.
Table 11 - Receive Carrier Sense Range
D1
D0
RANGE
0
0
±10%
0
1
±20%
1
0
±40%
1
1
reserved
10
1
SCE T x Data
T V Tx Output
T ransmitter
TV Rx Input
SCE Rx Data
Receiver
1/Carrier
1/Bit Rate
No Light
Light
Light
No Light
Tx Polarity bit = 1
Rx Polarity bit = 0
FIGURE 5 - TV REMOTE ASK ENCODE/DECODE



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