TSI148-133IL IDT, Integrated Device Technology Inc, TSI148-133IL Datasheet - Page 381

• Manufacturer Part Number: TSI148-133IL
• Description: IC PCI-VME BRIDGE 456PBGA
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: Tsi148&Trade;r

Specifications of TSI148-133IL

• Applications: PCI-to-VME Bridge
• Interface: PCI
• Voltage - Supply: 3.3V
• Package / Case: 456-PBGA
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 800-1905

B.1
Tsi148 PCI/X-to-VME Bus Bridge User Manual
80A3020_MA001_13
B. Hardware Implementation
This chapter discusses the following topics:
•
•
•
Tsi148 PLL Filtering
4. The PLL_TUNE0, PLL_TUNE1, PLL_TUNE2 and PLL_TUNE3 signals should be
5. The PLL filter shown in
Figure 48: Recommended PLL Filter
+1.8V
GND
“Tsi148 PLL Filtering” on page 381
“Capacitance Decoupling Recommendations” on page 382
“Recommended Board Layout Guidelines” on page 383
grounded on the board. These signals are adjacent to the PLL power and ground signals.
Grounding the tune signals helps shield the PLL power and ground signals.
The PLL tune bits 0, 1, 2 and 3 should have pull up and pull down resistors very close to
the package ball. The pull up should not be populated and the pull down should be
populated with a zero ohm resistor.
— The following values should be used in conjunction with
C1 C2
R2
R1
C3
Figure 48
C2 R3
should be used.
L
L
PLL_VSS
PLL_VDD
Figure
48:
381