XR17C154 Datasheet, PDF (62/62 Pages) Exar Corporation – 5V PCI BUS QUAD UART

XR17C154
5V PCI BUS QUAD UART
REV. P1.3.0
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PRELIMINARY
Figure 17. PCI Bus Configuration Space Registers Read and Write operation ............................. 52
Figure 18. Device Configuration and UART Registers Read Operation for a Byte or DWORD .... 53
Figure 19. Device Configuration registers, UART Registers and Transmit Data Burst Write Operation
54
Figure 20. Device Configuration Registers, UART Registers and Receive Data Burst Read Operation
55
Figure 21. 5V PCI Bus Clock (DC to 33MHz) ..................................................................................... 56
Figure 22. Transmit Data Interrupt at Trigger Level ......................................................................... 57
Figure 23. Receive Data Ready Interrupt at Trigger Level ............................................................... 57
PACKAGE DIMENSIONS ............................................................................................... 58
REVISION HISTORY ................................................................................................................................. 59
TABLE OF CONTENTS ..................................................................................................... I
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