PI7C9X20404SLCFDE Pericom Semiconductor, PI7C9X20404SLCFDE Datasheet - Page 51

• 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: -

7.2.67
July 2009 – Revision 1.2
Pericom Semiconductor
DEVICE CAPABILITIES REGISTER – OFFSET E4h
BIT
23:20
24
29:25
31:30
BIT
2:0
4:3
5
8:6
11:9
14:12
15
17:16
25:18
27:26
31:28
FUNCTION
Device/Port Type
Slot Implemented
Interrupt Message
Number
Reserved
FUNCTION
Max_Payload_Size
Supported
Phantom Functions
Supported
Extended Tag Field
Supported
Endpoint L0s
Acceptable Latency
Endpoint L1
Acceptable Latency
Reserved
Role_Based Error
Reporting
Reserved
Captured Slot Power
Limit Value
Captured Slot Power
Limit Scale
Reserved
TYPE
HwInt
TYPE
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Page 51 of 77
DESCRIPTION
Indicates the type of PCI Express logical device.
Reset to 0101b (Upstream port).
Reset to 0110b (Downstream port).
When set, indicates that the PCIe Link associated with this Port is connected
to a slot. This field is valid for downstream port of the Switch. The default
value may be changed by the status of strapped pin, SMBUs, or auto-loading
from EEPROM.
Read as 0b. No MSI messages are generated in the transparent mode.
Reset to 00b.
DESCRIPTION
Indicates the maximum payload size that the device can support for TLPs.
Each port of the Switch supports 256 bytes max payload size. The default
value may be changed by SMBus or auto-loading from EEPROM.
Reset to 001b.
Indicates the support for use of unclaimed function numbers as Phantom
functions. Read as 00b, since the Switch does not act as a requester.
Reset to 00b.
Indicates the maximum supported size of Tag field as a Requester. Read as 0,
since the Switch does not act as a requester.
Reset to 0b.
Acceptable total latency that an Endpoint can withstand due to the transition
from L0s state to the L0 state. For Switch, the ASPM software would not
check this value.
Reset to 000b.
Acceptable total latency that an Endpoint can withstand due to the transition
from L1 state to the L0 state. For Switch, the ASPM software would not
check this value.
Reset to 000b.
Reset to 000b.
When set, indicates that the device implements the functionality originally
defined in the Error Reporting ECN. The default value may be changed by
SMBus or auto-loading from EEPROM.
Reset to 1b.
Reset to 00b.
It applies to Upstream Port only. In combination with the Slot Power Limit
Scale value, specifies the upper limit on power supplied by slot.
This value is set by the Set_Slot_Power_Limit message or hardwired to 00h.
Reset to 00h.
It applies to Upstream Port only. Specifies the scale used for the Slot Power
Limit Value.
This value is set by the Set_Slot_Power_Limit message or hardwired to 00b.
Reset to 00b.
Reset to 0h.
4Port-4Lane PCI Express® Switch
SlimLine
PI7C9X20404SL
Datasheet
TM
Family