XR17D154 Datasheet, PDF (69/69 Pages) Exar Corporation – UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART

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UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART
XR17D154
REV. 1.2.0
FIGURE 20. PCI BUS CONFIGURATION SPACE REGISTERS READ AND WRITE OPERATION................................................................. 58
FIGURE 21. DEVICE CONFIGURATION AND UART REGISTERS READ OPERATION FOR A BYTE OR DWORD ...................................... 59
FIGURE 22. DEVICE CONFIGURATION REGISTERS, UART REGISTERS AND TRANSMIT DATA BURST WRITE OPERATION ..................... 60
FIGURE 23. DEVICE CONFIGURATION REGISTERS, UART REGISTERS AND RECEIVE DATA BURST READ OPERATION........................ 61
FIGURE 24. 5V PCI BUS CLOCK (DC TO 33MHZ) .......................................................................................................................... 62
FIGURE 25. 3.3V PCI BUS CLOCK (DC TO 33MHZ) ....................................................................................................................... 63
FIGURE 26. TRANSMIT DATA INTERRUPT AT TRIGGER LEVEL ........................................................................................................... 64
FIGURE 27. RECEIVE DATA READY INTERRUPT AT TRIGGER LEVEL ................................................................................................. 64
PACKAGE DIMENSIONS ................................................................................................ 65
REVISION HISTORY ...................................................................................................................................... 66
TABLE OF CONTENTS ............................................................................................................ I
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