XR17D158 Exar Corporation, XR17D158 Datasheet - Page 10

• Manufacturer Part Number: XR17D158
• Description: Eight-channel Pci-bus Uart
• Manufacturer: Exar Corporation

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PRELIMINARY
F
IGURE
4. T
Example 1
VIO = 3.3V, VCC = 5V
Example 2
VIO = 5V, VCC = 5V
Example 3
VIO = 3.3V, VCC = 3.3V
YPICAL
A
PPLICATIONS IN AN
E
MBEDDED
VIO = 3.3V
VIO = 3.3V
(up to 33MHz)
(up to 22MHz)
(up to 33MHz)
VIO = 5V
CLK
CLK
CLK
S
YSTEM
10
UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART
Interface
Interface
Interface
Local
Local
Local
PCI
Bus
PCI
Bus
PCI
Bus
Max Crystal Frequency = 24MHz
Max Crystal Frequency = 24MHz
Max Crystal Frequency = 20MHz
Max External Clock = 50MHz
Max External Clock = 50MHz
Max External Clock = 33MHz
UART Core Logic
UART Core Logic
UART Core Logic
UART Channel 0
UART Channel 0
UART Channel 0
UART Channel 1
UART Channel 2
UART Channel 3
UART Channel 4
UART Channel 5
UART Channel 6
UART Channel 1
UART Channel 2
UART Channel 3
UART Channel 4
UART Channel 5
UART Channel 6
UART Channel 1
UART Channel 2
UART Channel 3
UART Channel 4
UART Channel 5
UART Channel 6
UART Channel 7
UART Channel 7
UART Channel 7
VCC = 3.3V
VCC = 5V
VCC = 5V
XR17D158
REV. P1.0.0