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PC87366 数据表(PDF) 235 Page - National Semiconductor (TI) |
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PC87366 数据表(HTML) 235 Page - National Semiconductor (TI) |
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235 / 240 page  14.0 Device Characteristics (Continued) 235 www.national.com 14.5.5 Serial Port, Sharp-IR, SIR and Consumer Remote Control Timing Symbol Parameter Conditions Min Max Unit tBT Single Bit Time in Serial Port and Sharp-IR Transmitter tBTN − 25 Note 1. Note 1. tBTN is the nominal bit time in Serial Port, Sharp-IR, SIR and Consumer Remote Control modes. It is determined by the setting of the Baud Generator Divisor registers tBTN +25 ns Receiver tBTN − 2% tBTN +2% ns tCMW Modulation Signal Pulse Width in Sharp-IR and Consumer Remote Control Transmitter tCWN − 25 Note 2. Note 2. tCWN is the nominal pulse width of the modulation signal for Sharp-IR and Consumer Remote Control modes. It is determined by the MCPW field (bits 7-5) of the IRTXMC registerand the TXHSC bit (bit 2) of the RCCFG register tCWN +25 ns Receiver 500 ns tCMP Modulation Signal Period in Sharp-IR and Consumer Remote Control Transmitter tCPN − 25 Note 3. Note 3. tCPN is the nominal period of the modulation signal for Sharp-IR and Consumer Remote Control modes. It is determined by the MCFR field (bits 4-0) of the IRTXMC registerand the TXHSC bit (bit 2) of the RCCFG register. tCPN +25 ns Receiver tMMIN Note 4. Note 4. tMMIN and tMMAX define the time range within which the period of the incoming subcarrier signal has to fall in order for the signal to be accepted by the receiver. These time values are determined by the contents of the IRRXDC register and the setting of the RXHSC bit (bit 5) of the RCCFG register tMMAX Note 4. ns tSPW SIR Signal Pulse Width Transmitter, Variable (3/16)xtBTN − 15 Note 1. (3/16)xtBTN + 15 Note 1. ns Transmitter, Fixed 1.48 1.78 µs Receiver 1 µs SDRT SIR Data Rate Tolerance. % of Nominal Data Rate. Transmitter ± 0.87% Receiver ± 2.0% tSJT SIR Leading Edge Jitter. % of Nominal Bit Duration. Transmitter ± 2.5% Receiver ± 6.5% Serial Port tCMW tCMP Sharp-IR Consumer Remote Control tBT SIR tSPW |
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