Maxim-integrated MAXQ622 Manual de usuario Pagina 127

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MAXQ612/MAXQ622 Users Guide
Maxim Integrated 8-3
Figure 8-1. IR Transmit Frequency Shifting Example (IRCFME = 0)
Figure 8-2. IR Transmit Carrier Generation and Carrier Modulator Control
IRCA IRCA = 0202h
IRMT = 3
IRCA = 0002h
IRCA, IRMT, IRDATA SAMPLED AT END OF
IRV DOWN-COUNT INTERVAL
IRMT = 5IRMT
0 01
3 32 2450 01 1
IRDATA
IR INTERRUPT
IRTX
IRTXPOL = 1
IRTX
IRTXPOL = 0
CARRIER OUTPUT
(IRV)
0
1
0
1
IRCAH + 1
IRTX PIN
IR INTERRUPT
IRTXPOL
IRCFME
SAMPLE
IRDATA ON
IRV = 0000h
IRCAL + 1
CARRIER GENERATION
CARRIER MODULATION
CARRIER
IRDATA
IRCLK
IRMT
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