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The PSE initiates the read time slot by pulling low on the bus. Subsequently, the PSE releases the bus within t<sub>W1L</sub>, at which point the PD responds by pulling the bus low for the read 0 low time, t<sub>R0L</sub> (1.75ms-3.25ms), in order to transmit a '0' (Figure 4). Alternatively, if the intention is to transmit a '1', the PD refrains from pulling the bus low after the read 1 low time, t<sub>W1L</sub>. This read time slot is repeated for each PD bit, see figure 30-34 for example waveforms. The PD sends data LSB first. Each of these read time slots has a maximum duration of t<sub>READSLOT</sub> (3.83ms). | The PSE initiates the read time slot by pulling low on the bus. Subsequently, the PSE releases the bus within t<sub>W1L</sub>, at which point the PD responds by pulling the bus low for the read 0 low time, t<sub>R0L</sub> (1.75ms-3.25ms), in order to transmit a '0' (Figure 4). Alternatively, if the intention is to transmit a '1', the PD refrains from pulling the bus low after the read 1 low time, t<sub>W1L</sub>. This read time slot is repeated for each PD bit, see Figure 30-34 for example waveforms. The PD sends data LSB first. Each of these read time slots has a maximum duration of t<sub>READSLOT</sub> (3.83ms). |