STPCI2GDYI STMicroelectronics, STPCI2GDYI Datasheet - Page 80

• Manufacturer Part Number: STPCI2GDYI
• Description: IC SYSTEM-ON-CHIP X86 516-PBGA
• Manufacturer: STMicroelectronics

Specifications of STPCI2GDYI

• Applications: Graphics Controller
• Core Processor: x86
• Controller Series: STPC® Atlas
• Interface: UART
• Number Of I /o: 16
• Voltage - Supply: 2.45 V ~ 2.7 V
• Operating Temperature: -40°C ~ 115°C
• Mounting Type: Surface Mount
• Package / Case: 516-PBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Program Memory Type: -
• Ram Size: -
• Lead Free Status / Rohs Status: Compliant

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