LAM 853-041348-781 連接器
系統(tǒng)插槽鏈路1是到PCI Express交換機(jī)1的Gen-2 x8 PCI Express鏈路，在系統(tǒng)控制器和853-041348-781交換機(jī)之間提供4 GB/s（單向）的標(biāo)稱帶寬。PXI Express外圍插槽2-10通過Gen-2 x8 PCI Express鏈路連接到PCI Express交換機(jī)1，并且位于系統(tǒng)插槽鏈路1的下游。853-041348-781到PCI橋1連接到PCI Express交換機(jī)1，并為混合外設(shè)插槽2-9提供32位、33 MHz的PCI總線。系統(tǒng)插槽鏈路2是到PCI Express交換機(jī)2的Gen-2 x16 PCI Express鏈路，在系統(tǒng)控制器插槽和PCI Express交換機(jī)之間提供8 GB/s（單向）的標(biāo)稱帶寬。PXI Express外圍插槽11-18通過Gen-2 x8 PCI Express鏈路連接到PCI Express交換機(jī)2，并且位于系統(tǒng)插槽鏈路2的下游。PCI Express到PCI橋2連接到PCI Express交換機(jī)2，并為混合外圍插槽11-18提供32位、33MHz的PCI總線。系統(tǒng)控制器插槽還可以連接到一些PXI功能，如：PXI_CLK10、PXI Star、PXI Trigger Bus和PXI Local Bus 6。默認(rèn)情況下，系統(tǒng)控制器將使用PS_ON#信號控制電源。此線路上的邏輯低將打開電源。系統(tǒng)控制器插槽是機(jī)箱的插槽1，是CompactPCI Express和853-041348-781規(guī)范定義的2鏈路配置系統(tǒng)插槽。
它有三個系統(tǒng)控制器擴(kuò)展插槽，用于比一個插槽寬的系統(tǒng)控制器模塊。這些插槽允許系統(tǒng)控制器向左擴(kuò)展，以防止系統(tǒng)控制器使用外圍插槽。背板使用Gen-3 x8和Gen-3 x16 853-041348-781鏈路將系統(tǒng)插槽連接到兩個PCI Express交換機(jī)。這些交換機(jī)將PCI Express連接分配到外圍插槽和兩個PCI Express到PCI橋，以向混合外圍插槽提供PCI總線。有關(guān)NI PXIe-1085系列體系結(jié)構(gòu)的概述，請參閱圖1-3。系統(tǒng)插槽鏈路1是到PCI 853-041348-781交換機(jī)1的Gen-3 x8 PCI Express鏈路，在系統(tǒng)控制器和PCI Express交換機(jī)之間提供8 GB/s（單向）的標(biāo)稱帶寬。PXI Express外圍插槽2-10通過Gen-3 x8 PCI Express鏈路連接到PCI Express交換機(jī)1，并且位于系統(tǒng)插槽鏈路1的下游。PCI Express到PCI橋1連接到PCI Express交換機(jī)1，并為混合外設(shè)插槽2-9提供32位、33 MHz的PCI總線。PCI Express交換機(jī)1還通過用于高級背板配置的Gen-3 x8 853-041348-781鏈路連接到PCI Express交換機(jī)2。系統(tǒng)插槽鏈路2是到PCI Express交換機(jī)2的Gen-3 x16 PCI Express鏈路，在系統(tǒng)控制器插槽和PCI Express交換機(jī)之間提供16 GB/s（單向）的標(biāo)稱帶寬。853-041348-781外圍插槽11-18通過Gen-3 x8 PCI Express鏈路連接到PCI Express交換機(jī)2，并且位于系統(tǒng)插槽鏈路2的下游。PCI Express到PCI橋2連接到PCI Express交換機(jī)2，并為混合外圍插槽11-18提供32位、33MHz的PCI總線。
853-041348-781 System slot link 1 is a Gen-2 x8 PCI Express link to PCI Express switch 1, providing a nominal bandwidth of 4 GB/s (single direction) between the system controller and PCI Express switch 1. PXI Express peripheral slots 2-10 are connected to PCI Express switch 1 with Gen-2 x8 PCI Express links and are downstream of system slot link 1. PCI Express-to-PCI bridge 1 is connected to PCI Express switch 1 and provides a 32-bit, 33 MHz PCI bus for hybrid peripheral slots 2-9. System slot link 2 is a Gen-2 x16 PCI Express link to PCI Express switch 2, providing a nominal bandwidth of 8 GB/s (single direction) between the system controller slot and PCI Express switch 2.853-041348-781 PXI Express peripheral slots 11-18 are connected to PCI Express switch 2 with Gen-2 x8 PCI Express links and are downstream of system slot link 2. PCI Express-to-PCI bridge 2 is connected to PCI Express switch 2 and provides a 32-bit,853-041348-781 33 MHz PCI bus for hybrid peripheral slots 11-18.
853-041348-781 The system controller slot also has connectivity to some PXI features such as: PXI_CLK10, PXI Star, PXI Trigger Bus and PXI Local Bus 6. By default, the system controller will control the power supply with the PS_ON# signals. A logic low on this line will turn the power supply on.The system controller slot is Slot 1 of the chassis and is a 2-Link configuration system slot as defined by the CompactPCI Express and PXI Express specifications. It has three system controller expansion slots for system controller modules that are wider than one slot. These slots allow the system controller to expand to the left to prevent the system controller from using peripheral slots. 853-041348-781The backplane connects the system slot to two PCI Express switches using a Gen-3 x8 and a Gen-3 x16 PCI Express link. These switches distribute PCI Express connections to the peripheral slots and to two PCI Express-to-PCI bridges to provide PCI buses to the hybrid peripheral slots.
Refer to Figure 1-3 for an overview of the NI PXIe-1085 Series architecture. System slot link 1 is a Gen-3 x8 PCI Express link to PCI Express switch 1, providing a nominal bandwidth of 8 GB/s (single direction) between the system controller and PCI Express switch 1. PXI Express peripheral slots 2-10 are connected to PCI Express switch 1 with Gen-3 x8 PCI Express links and are downstream of system slot link 1. PCI Express-to-PCI bridge 1 is connected to PCI Express switch 1 and provides a 32-bit, 33 MHz PCI bus for hybrid peripheral slots 2-9. PCI Express switch 1 also is connected to PCI Express switch 2 with a Gen-3 x8 PCI Express link for advanced backplane configurations. 853-041348-781System slot link 2 is a Gen-3 x16 PCI Express link to PCI Express switch 2, providing a nominal bandwidth of 16 GB/s (single direction) between the system controller slot and PCI Express switch 2. PXI Express peripheral slots 11-18 are connected to PCI Express switch 2 with Gen-3 x8 PCI Express links and are downstream of system slot link 2. PCI Express-to-PCI bridge 2 is connected to PCI Express switch 2 and provides a 32-bit, 33 MHz PCI bus for hybrid peripheral slots 11-18.853-041348-781