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參數(shù)資料
| 型號： | PI7C9X20404SLCFDE |
| 廠商： | Pericom |
| 文件頁數(shù)： | 40/77頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC PCIE PACKET SWITCH 128LQFP |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 系列： | SlimLine™ |
| 應(yīng)用： | 封裝開關(guān)，4 端口/4 線道 |
| 接口： | PCI Express |
| 封裝/外殼： | 128-LQFP 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 128-LQFP（14x14） |
| 包裝： | 托盤 |
| 安裝類型： | 表面貼裝 |
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PI7C9X20404SL
4Port-4Lane PCI Express Switch
SlimLine
TM Family
Datasheet
Page 45 of 77
July 2009 – Revision 1.2
Pericom Semiconductor
7.2.51
ACKNOWLEDGE LATENCY TIMER – OFFSET B0h
BIT
FUNCTION
TYPE
DESCRIPTION
29:16
User ACK Latency
Timer
RW
A 14-bit register contains a user-defined value. The default value may be
changed by SMBus or auto-loading from EEPROM.
Reset to 0.
30
Enable User ACK
Latency
RW
When asserted, the user-defined ACK latency value is be employed. The
default value may be changed by SMBus or auto-loading from EEPROM.
Reset to 0b.
31
VGA Capability
Enable
RO
When asserted, the VGA Capability is enabled. The value may be changed by
auto-loading from EEPROM.
Reset to 1b.
7.2.52
SWITCH OPERATION MODE – OFFSET B4h (Upstream Port)
BIT
FUNCTION
TYPE
DESCRIPTION
0
Store-Forward
RW
When set, a store-forward mode is used. Otherwise, the chip is working under
cut-through mode. The default value may be changed by SMBus or auto-
loading from EEPROM.
Reset to 0b.
2:1
Cut-through
Threshold
RW
Cut-through Threshold. When forwarding a packet from low-speed port to
high-speed mode, the chip provides the capability to adjust the forwarding
threshold. The default value may be changed by SMBus or auto-loading from
EEPROM.
00b: the threshold is set at the middle of forwarding packet
01b: the threshold is set ahead 1-cycle of middle point
10b: the threshold is set ahead 2-cycle of middle point.
11b: the threshold is set ahead 3-cycle of middle point.
Reset to 01b.
3
Port Arbitration
Mode
RW
When set, the round-robin arbitration will stay in the arbitrated port even if
the credit is not enough but request is pending.
When clear, the round-robin arbitration will always go to the requesting port,
which the outgoing credit is enough for the packet queued in the port.
The default value may be changed by SMBus or auto-loading from
EEPROM.
Reset to 0b.
4
Credit Update Mode
RW
When set, the frequency of releasing new credit to the link partner will be one
credit per update.
When clear, the frequency of releasing new credit to the link partner will be
two credits per update.
The default value may be changed by SMBus or auto-loading from
EEPROM.
Reset to 0b.
5
Ordering on
Different Egress Port
Mode
RW
When set, there has ordering rule on packets for different egress port. The
default value may be changed by SMBus or auto-loading from EEPROM.
Reset to 0b.
6
Ordering on
Different Tag of
Completion Mode
RW
When set, there has ordering rule between completion packet with different
tag. The default value may be changed by SMBus or auto-loading from
EEPROM.
Reset to 0b.
7
Reserved
RO
Reset to 0.
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相關(guān)代理商/技術(shù)參數(shù) |
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| PI7C9X20404SLCFDEX | 功能描述:外圍驅(qū)動器與原件 - PCI 4port 4lane PCIe Packet Switch RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| PI7C9X20505GPBNDE | 功能描述:外圍驅(qū)動器與原件 - PCI 5port 5lane PCIe PacketSwitch RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| PI7C9X20508GPANDE | 制造商:Pericom Semiconductor Corporation 功能描述:5-PORT, 8-LANE, GREENPACKET- PCIE PACKET SWITCH - Rail/Tube |
| PI7C9X20508GPBEVB | 制造商:Pericom Semiconductor Corporation 功能描述:EVAL BOARD - Boxed Product (Development Kits) |
| PI7C9X20508GPBNDE | 功能描述:外圍驅(qū)動器與原件 - PCI 5port 8lane PCIe PacketSwitch RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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