STPCI2HDYI STMicroelectronics, STPCI2HDYI Datasheet - Page 80

• Manufacturer Part Number: STPCI2HDYI
• Manufacturer: STMicroelectronics

Specifications of STPCI2HDYI

• Operating Temperature (min): -40C
• Operating Temperature (max): 115C
• Processing Unit: Microprocessor
• Operating Supply Voltage (min): 2.45/3V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 2.7/3.6V
• Package Type: BGA
• Screening Level: Industrial
• Pin Count: 516
• Mounting: Surface Mount
• Rad Hardened: No
• Lead Free Status / RoHS Status: Supplier Unconfirmed

STPC® ATLAS
6.3.4. PCI BUS
The PCI bus is always active and the following
control signals must be pulled-up to 3.3V or 5V
through 8K2 resistors even if this bus is not
connected to an external device: FRAME#,
TRDY#, IRDY#, STOP#, DEVSEL#, LOCK#,
SERR#, PERR#, PCI_REQ#[2:0].
Figure 6-8. Typical PCI clock routing
In the case of higher clock load it is recommended
to use a zero-delay clock buffer as described in
Figure
Figure 6-9. PCI clock routing with zero-delay clock buffer
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1
6-9. This approach is also recommended
PCICLKI
PCICLKO
PCICLKO
PCICLKI
0 - 22
Implementation
CY2305
PLL
0 - 33pF
10 - 33
PCI_CLKO must be connected to PCI_CLKI
through a 10 to 33 Ohms resistor.
shows a typical implementation.
For more information on layout constraints, go to
the place and route recommendations section.
when implementing the delay on PCICLKI
according to the PCI section of the Electrical
Specifications chapter.
PCICLKA
PCICLKB
PCICLKC
Device A
Device B
Device C
Device D
Device A
Device B
Device C
Figure 6-8