PI7C9X20404SLCFDE Pericom Semiconductor, PI7C9X20404SLCFDE Datasheet - Page 35

• Manufacturer Part Number: PI7C9X20404SLCFDE
• Description: IC PCIE PACKET SWITCH 128LQFP
• Manufacturer: Pericom Semiconductor
• Series: SlimLine™r

Specifications of PI7C9X20404SLCFDE

• Applications: Data Transport
• Interface: Advanced Configuration Power Interface (ACPI)
• Package / Case: 128-LQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -

7.2.7
7.2.8
7.2.9
7.2.10
7.2.11
7.2.12
July 2009 – Revision 1.2
Pericom Semiconductor
CACHE LINE REGISTER – OFFSET 0Ch
PRIMARY LATENCY TIMER REGISTER – OFFSET 0Ch
HEADER TYPE REGISTER – OFFSET 0Ch
PRIMARY BUS NUMBER REGISTER – OFFSET 18h
SECONDARY BUS NUMBER REGISTER – OFFSET 18h
SUBORDINATE BUS NUMBER REGISTER – OFFSET 18h
BIT
7:0
BIT
15:8
BIT
23:16
BIT
7:0
BIT
15:8
BIT
23:16
FUNCTION
Cache Line Size
FUNCTION
Primary Latency
timer
FUNCTION
Header Type
FUNCTION
Primary Bus Number
FUNCTION
Secondary Bus
Number
FUNCTION
Subordinate Bus
Number
TYPE
TYPE
TYPE
TYPE
TYPE
TYPE
RW
RW
RW
RW
RO
RO
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DESCRIPTION
The cache line size register is set by the system firmware and the operating
system cache line size. This field is implemented by PCI Express devices as a
RW field for legacy compatibility, but it has no impact on any PCI Express
device functionality.
Reset to 0b.
DESCRIPTION
Does not apply to PCI Express. Must be hardwired to 00h.
DESCRIPTION
Read as 01h to indicate that the register layout conforms to the standard PCI-
to-PCI Bridge layout.
DESCRIPTION
Indicates the number of the PCI bus to which the primary interface is
connected. The value is set in software during configuration.
Reset to 00h.
DESCRIPTION
Indicates the number of the PCI bus to which the secondary interface is
connected. The value is set in software during configuration.
Reset to 00h.
DESCRIPTION
Indicates the number of the PCI bus with the highest number that is
subordinate to the Bridge. The value is set in software during configuration.
Reset to 00h.
4Port-4Lane PCI Express® Switch
SlimLine
PI7C9X20404SL
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