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PC97338 Datasheet(PDF) 204 Page - National Semiconductor (TI) |
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PC97338 Datasheet(HTML) 204 Page - National Semiconductor (TI) |
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204 / 221 page  204 www.national.com DMA ACCESS TIMING tDSW Figure 94 Read or Write Signal Width 60 1000 ns tDSQ Figure 94 DRQ Inactive from Read or Write Active 60 ns tDKS Figure 94 DACK Signal Setup 15 ns tDKH Figure 94 DACK Signal Hold 0 ns tTCS Figure 94 TC Signal Setup 60 ns tTCH Figure 94 TC Signal Hold from Read or Write Inactive 2 ns UART AND INFRARED INTERFACE TIMING tCMW Figure 95 Modulation Signal Pulse Width in Sharp- IR and CEIR Transmitter tCWN -25ns (Note 1) tCWN +25ns Receiver 500 ns tCMP Figure 95 Modulation Signal Period in Sharp-IR and CEIR Transmitter tCPN -25 ns (Note 2) tCPN +25 ns Receiver tMMIN (Note 3) tMMAX tBT Figure 95 Single Bit Time in UART and Sharp-IR Transmitter tBTN - 25 ns (Note 4) tBTN + 25 ns Receiver tBTN - 2% tBTN + 2% SDRT — SIR Data Rate Tolerance. Percent of Nominal Data Rate. Transmitter +/- 0.87% Receiver +/- 2.0% tSJT — SIR Leading Edge Jitter. Percent of Nominal Bit Duration. Transmitter +/- 2.5% Receiver +/- 6.0% tSPW Figure 96 SIR Pulse Width Transmitter, Variable Width (3/16) x tBTN -15 ns (Note 4) (3/16) x tBTN +15 ns Transmitter, Fixed Width 1.48 1.78 µs Receiver 1 µs(1/2) x t BTN MDRT — MIR Data Rate Tolerance. Percent of Nominal Data Rate. Transmitter +/- 0.1% Receiver +/- 0.15% tMJT — MIR Leading Edge Jitter. Percent of Nominal Bit Duration. Transmitter +/- 2.9% Receiver +/- 6.0% tMPW Figure 96 MIR Pulse Width Transmitter tMWN - 15ns (Note 5) tMWN + 15 ns Receiver 60 ns (1/2) x tBTN (Note 4) Symbol Figure Parameter Min Max Unit |
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