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IRCC データシート(PDF) 12 Page - SMSC Corporation

部品番号 IRCC
部品情報  INFRARED COMMUNICATIONS CONTROLLER
PDF  79 Pages
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メーカー  SMSC [SMSC Corporation]
ホームページ  http://www.smsc.com
Logo SMSC - SMSC Corporation

IRCC データシート(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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