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SCD1284 Datasheet(PDF) 172 Page - Intel Corporation |
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SCD1284 Datasheet(HTML) 172 Page - Intel Corporation |
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172 / 176 page  CD1284 — IEEE 1284-Compatible Parallel Interface Controller 172 Datasheet 12.0 Appendix B Figure 34. UART to RS232 and IR Port Interface Motherboard Example Schematic VA+ VD+ AGND PINC PINA LED1C LED2C RESET TGND1 TGND2 DGND EXTCLK XTALIN XTALOUT RXD FORM/BSY TXD D/C PWRDN CLKFR 8 12 5 7 6 1 4 19 17 18 13 16 14 15 10 9 2320 0.1 mF + 10 mF +3V 0.1 mF + 10 mF + 47 mF +3V 10 OHM 5.2 W (2) 5.2 W (2) 3.6864 MHz CS8130 BPV23NF TSHA5502 CIA- CIA+ MAX562 VCC CIB- CIB+ T1OUT T2OUT R1IN R2IN V- V+ GND 27 28 26 3 4 1 5 2 0.33 mF +3V 0.33 mF 0.33 mF C2+ C2- 24 25 0.33 mF 0.68 mF 0.33 mF 5 20 21 22 23 DTR R1OUT R2OUT R3OUT R5OUT R4OUT EN SHDN 15 14 R3IN R4IN R5IN T3OUT T2IN T1IN T3IN 16 17 18 19 9 8 7 6 13 12 11 10 RTS TXD RXD DCD RI DSR CTS 6 8 2 1 9 4 7 3 DTR RTS TXD RXD DCD RI DSR CTS SG CD1284 RS-232/IR SELECT 11 NOTES: (1) This circuit has not yet been built and debugged. (2) Choice of LED, power consumption, and physical positioning will affect R value. DB9 Serial Connector (COM PORT) |
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