XR17D158_05 Datasheet, PDF (10/73 Pages) Exar Corporation – UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART

XR17D158
UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART
FIGURE 4. TYPICAL APPLICATIONS IN AN EMBEDDED SYSTEM
Example 1
VIO = 3.3V, VCC = 5V
VIO = 3.3V
CLK
(up to 33.34MHz)
PCI
Local
Bus
Interface
xr
REV. 1.2.2
UART Core Logic
UART Channel 0
UART Channel 1
UART Channel 2
UART Channel 3
UART Channel 4
UART Channel 5
UART Channel 6
UART Channel 7
VCC = 5V
Max Crystal Frequency = 24MHz
Max External Clock = 50MHz
Example 2
VIO = 5V, VCC = 5V
VIO = 5V
CLK
(up to 33.34MHz)
PCI
Local
Bus
Interface
UART Core Logic
UART Channel 0
UART Channel 1
UART Channel 2
UART Channel 3
UART Channel 4
UART Channel 5
UART Channel 6
UART Channel 7
VCC = 5V
Max Crystal Frequency = 24MHz
Max External Clock = 50MHz
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