PI7C9X7954AFDE Pericom Semiconductor, PI7C9X7954AFDE Datasheet - Page 68

• 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

10. CLOCK SCHEME
The PI7C9X7954 requires 100MHz differential clock inputs through CLKINP and CLKINN Pins as shown
in the following table.
September 2009 – Revision 1.3
Pericom Semiconductor
Table 10-1 Input Clock Requirements
a. RCUI (Reference Clock Unit Interval) refers to the reference clock period
Symbol
ClkIn
ClkIn
T
V
R
SW
, T
F
FREQ
DC
Description
Reference input clock range
Duty cycle of input clock
Rise/Fall time of input clock
Differential input voltage swing
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(zero-to-peak)
Min
0.4
40
-
-
Typical
100
50
-
PCI Express® Quad UART
Max.
0.2
0.8
60
-
PI7C9X7954
RCUI
Datasheet
MHz
Unit
%
V
a