PI7C9X20404GPBNBE Pericom Semiconductor, PI7C9X20404GPBNBE Datasheet - Page 63

• Manufacturer Part Number: PI7C9X20404GPBNBE
• Description: IC PCIE PACKET SWITCH 148LFBGA
• Manufacturer: Pericom Semiconductor
• Series: GreenPacket™r

Specifications of PI7C9X20404GPBNBE

• Applications: Data Transport
• Interface: Advanced Configuration Power Interface (ACPI)
• Package / Case: 148-LFBGA
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -

7.2.93
7.2.94
June 2009 – Revision 1.6
Pericom Semiconductor
VC RESOURCE STATUS REGISTER (0) – OFFSET 158h
VC RESOURCE CAPABILITY REGISTER (1) – OFFSET 15Ch
BIT
15:8
16
19:17
23:20
26:24
30:27
31
BIT
15:0
16
17
31:18
BIT
7:0
13:8
14
15
22:16
23
FUNCTION
Reserved
Load Port Arbitration
Table
Port Arbitration
Select
Reserved
VC ID
Reserved
VC Enable
FUNCTION
Reserved
Port Arbitration
Table Status
VC Negotiation
Pending
Reserved
FUNCTION
Port Arbitration
Capability
Reserved
Advanced Packet
Switching
Reject Snoop
Transactions
Maximum Time
Slots
Reserved
TYPE
TYPE
TYPE
RW
RW
RW
RW
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Page 63 of 79
DESCRIPTION
Reset to 00h.
When set, the programmed Port Arbitration Table is applied to the hardware.
This bit always returns 0b when read.
Reset to 0b.
This field is used to configure the Port Arbitration by selecting one of the
supported Port Arbitration schemes. The permissible values for the schemes
supported by Switch are 000b and 011b at VC0, other value than these
written into this register will be treated as default.
Reset to 000b.
Reset to 0h.
This field assigns a VC ID to the VC resource.
Reset to 000b.
Reset to 0h.
0b: it disables this Virtual Channel
1b: it enables this Virtual Channel
Reset to 1b.
DESCRIPTION
Reset to 0000h.
When set, it indicates that any entry of the Port Arbitration Table is written by
software. This bit is cleared when hardware finishes loading values stored in
the Port Arbitration Table after the bit of “Load Port Arbitration Table” is set.
Reset to 0b.
When set, it indicates that the VC resource is still in the process of
negotiation. This bit is cleared after the VC negotiation is complete.
Reset to 0b.
Reset to 0.
DESCRIPTION
It indicates the types of Port Arbitration supported by the VC resource. The
Switch supports Hardware fixed arbitration scheme, e.g., Round Robin,
Weight Round Robin (WRR) arbitration with 128 phases (3~4 enabled ports)
and Time-based WRR with 128 phases (3~4 enabled ports). Note that the
Time-based WRR is only valid in VC1.
Reset to 00011001b.
Reset to 000000b.
When set, it indicates the VC resource only supports transaction optimized
for Advanced Packet Switching (AS).
Reset to 0b.
This bit is not applied to PCIe Switch.
Reset to 0b.
It indicates the maximum numbers of time slots (minus one) are allocated for
Isochronous traffic. The default value may be changed by SMBus or auto-
loading from EEPROM.
Reset to 7Fh.
Reset to 0b.
4Port-4Lane PCI Express Switch
GreenPacket
PI7C9X20404GP
Datasheet
TM
Family