EMERSON 5X00059G01卡件控制器
PCI總線4使用PEX8112橋連接到USB控制器，并配置為33MHz PCI模式，因?yàn)閁SB控制器僅支持33MHz。4.10.1 VME控制器MVME7100的VMEbus接口由Tsi148 VMEbus控制器提供。Tsi148提供所需的VME、VME擴(kuò)展和2eSST功能。TI SN74VMEH22501收發(fā)器用于緩沖Tsi148和VME背板之間的VME信號。有關(guān)更多詳細(xì)信息和/或編程信息，請參閱Tsi148用戶手冊。4.10.2 USB NEC uPD720101 USB 2.0主機(jī)控制器提供帶有集成收發(fā)器的USB端口，用于連接任何USB兼容設(shè)備或集線器。USB通道1路由到位于前面板的單個(gè)USB連接器。前面板USB端口的直流電源通過USB電源開關(guān)提供，該開關(guān)為端口1提供軟啟動、電流限制、過電流檢測和電源啟用。有關(guān)更多詳細(xì)信息和/或編程信息，請參閱uPD720101數(shù)據(jù)表。
PCI bus 4 connects to the USB controller using a PEX8112 bridge and is configured for 33MHz PCI mode since the USB controller is only 33MHz capable. 4.10.1 VME Controller The VMEbus interface for the MVME7100 is provided by the Tsi148 VMEbus controller. The Tsi148 provides the required VME, VME extensions, and 2eSST functions. TI SN74VMEH22501 transceivers are used to buffer the VME signals between the Tsi148 and the VME backplane. Refer to the Tsi148 user's manual for additional details and/or programming information. 4.10.2 USB The NEC uPD720101 USB 2.0 Host Controller provides USB ports with integrated transceivers for connectivity with any USB compliant device or hub. USB channel 1 is routed to a single USB connector located at the front panel. DC power to the front panel USB port is supplied via a USB power switch which provides soft-start, current limiting, over current detection, and power enable for port 1. Refer to the uPD720101 data sheet for additional details and/or programming information.
