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XR17V252 Datasheet(PDF) 29 Page - Exar Corporation |
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XR17V252 Datasheet(HTML) 29 Page - Exar Corporation |
29 / 69 page XR17V252 29 REV. 1.0.1 66 MHZ PCI BUS DUAL UART WITH POWER MANAGEMENT SUPPORT FIGURE 11. BAUD RATE GENERATOR TABLE 12: TYPICAL DATA RATES WITH A 24 MHZ CRYSTAL OR EXTERNAL CLOCK AT 16X SAMPLING REQUIRED OUTPUT DATA RATE DIVISOR FOR 16x Clock (Decimal) DIVISOR OBTAINABLE IN V252 DLM PROGRAM VALUE (HEX) DLL PROGRAM VALUE (HEX) DLD PROGRAM VALUE (HEX)) DATA ERROR RATE (%) 400 3750 3750 E A6 0 0 2400 625 625 2 71 0 0 4800 312.5 312 8/16 1 38 8 0 9600 156.25 156 4/16 0 9C 4 0 10000 150 150 0 96 0 0 19200 78.125 78 2/16 0 4E 2 0 25000 60 60 0 3C 0 0 28800 52.0833 52 1/16 0 34 1 0.04 38400 39.0625 39 1/16 0 27 1 0 50000 30 30 0 1E 0 0 57600 26.0417 26 1/16 0 1A 1 0.08 75000 20 20 0 14 0 0 100000 15 15 0 F 0 0 115200 13.0208 13 0 D 0 0.16 153600 9.7656 9 12/16 0 9 C 0.16 200000 7.5 7 8/16 0 7 8 0 225000 6.6667 6 11/16 0 6 B 0.31 230400 6.5104 6 8/16 0 6 8 0.16 250000 6 6 0 6 0 0 300000 5 5 0 5 0 0 400000 3.75 3 12/16 0 3 C 0 460800 3.2552 3 4/16 0 3 4 0.16 500000 3 3 0 3 0 0 750000 2 2 0 2 0 0 921600 1.6276 1 10/16 0 1 A 0.16 1000000 1.5 1 8/16 0 1 8 0 XTAL1 XTAL2 Crystal Osc/ Buffer MCR Bit-7=0 (default) MCR Bit-7=1 DLL, DLM and DLD Registers Prescaler Divide by 1 Prescaler Divide by 4 16X or 8X Sampling Rate Clock to Transmitter and Receiver To Other Channels Fractional Baud Rate Generator Logic |
Similar Part No. - XR17V252 |
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Similar Description - XR17V252 |
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