PI7C9X7954AFDE Pericom Semiconductor, PI7C9X7954AFDE Datasheet - Page 23
![no-image](/images/manufacturer_photos/0/5/521/pericom_semiconductor_sml.jpg)
PI7C9X7954AFDE
Manufacturer Part Number
PI7C9X7954AFDE
Description
IC PCIE-TO-UART BRIDGE 128LQFP
Manufacturer
Pericom Semiconductor
Specifications of PI7C9X7954AFDE
Applications
PCIe-to-Uart Bridge
Interface
Advanced Configuration Power Interface (ACPI)
Voltage - Supply
1.8V, 3.3V
Package / Case
128-LQFP
Mounting Type
Surface Mount
Transmitter And Receiver Fifo Counter
Yes
Package Type
LQFP
Mounting
Surface Mount
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PI7C9X7954AFDE
Manufacturer:
PERICOM
Quantity:
2
Company:
Part Number:
PI7C9X7954AFDE
Manufacturer:
Pericom
Quantity:
197
5.2.11. Crystal Oscillator
The PI7C9X7954 uses a crystal oscillator or an external clock source to provide system clock to the Baud
Rate Generator. When a clock source is used, the clock signal should be connected to the XTLI pin, and a
2K pull-up resistor should be connected to the XTLO pin.
When a crystal oscillator is used, the XTLI is the input and XTLO is the output, and the crystal should be
connected in parallel with two capacitors.
September 2009 – Revision 1.3
Pericom Semiconductor
Figure 5-4 External Clock Source as the Clock Source
VCC
GND
Figure 5-3 Crystal Oscillator as the Clock Source
09-0088
External Clock
XTLI
C1
Page 23 of 70
14.7456 MHz
R1
2K
VCC
R
C2
XTLO
XTLI
XTLO
PCI Express® Quad UART
PI7C9X7954
Datasheet