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CDB8130 Folha de dados(PDF) 5 Page - Cirrus Logic |
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CDB8130 Folha de dados(HTML) 5 Page - Cirrus Logic |
5 / 10 page CDB8130 DS170DB5 5 allows systems using only one LED to operate with a much higher drive current than can be sourced by using a single driver. To connect the transmitter drivers in this way, install jumper J17. The LED transmitter driver resistors (R3 and R4) are optimized for a power supply voltage of 3.3V. For operation at voltages greater than this, the val- ues of these resistors must be increased. 1.4 RS-232 Interface The CDB8130 is designed to connect to any stan- dard RS-232 port through the female DB-9 connec- tor marked “RS-232.” The MAX562 (U2) supplies the voltage level translation function, taking the ± 12V RS-232 levels and translating them to standard CMOS logic levels. Table 1 shows the default mapping of UART sig- nals to CS8130 pins. 1.5 Header Interface If desired, the RS-232 level translator can be re- moved from the circuit. The signals are discon- nected by removing jumpers J5, J6, J7, J8, and J9. Figure 2. Power Supply Circuitry Figure 3. Reset Circuit CS8130 Pin UART Signal Direction RXD RXD to UART TXD TXD to CS8130 FORM/BSY CTS to UART D/C DTR to CS8130 RESET RTS to CS8130 Table 1. CS8130-to-UART Connections |
Nº de peça semelhante - CDB8130 |
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Descrição semelhante - CDB8130 |
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