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公开(公告)号:US20080189458A1
公开(公告)日:2008-08-07
申请号:US11913057
申请日:2006-05-01
IPC分类号: G06F13/00
CPC分类号: G06F13/4291
摘要: Consistent with one example embodiment, communications systems, using a serial data transfer bus having a serial data line and a clock line used to implement a communications protocol, incorporate programmable updating of slave device output banks sequentially or simultaneously. The communications system includes two or more slave devices and/or a slave device having two or more banks of output drivers. Each slave device receives serial data and provides a data word assembled from the serial data. A programmable register in each slave device is programmed, using the communications protocol, to select one or more slave device configurations. Each of the two or more slave devices and/or two or more banks of output drivers updates either sequentially, or in coordination with other of the two or more slave devices and/or two or more banks of output drivers, based on each slave devices configuration selected by its programmable register.
摘要翻译: 与一个示例实施例一致,使用具有串行数据线的串行数据传输总线和用于实现通信协议的时钟线的通信系统并入或并行地并入从属设备输出组的可编程更新。 通信系统包括两个或更多个从设备和/或具有两个或更多个输出驱动器组的从设备。 每个从设备接收串行数据并提供从串行数据组装的数据字。 使用通信协议对每个从设备中的可编程寄存器进行编程,以选择一个或多个从设备配置。 基于每个从设备,两个或更多个从设备和/或两个或更多个输出驱动器组中的每一个依次或与两个或更多个从设备中的其他设备和/或两个或更多个输出驱动器组配合地更新 配置由其可编程寄存器选择。
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公开(公告)号:US06580292B2
公开(公告)日:2003-06-17
申请号:US09922420
申请日:2001-08-02
IPC分类号: H03K190175
CPC分类号: H03K19/018585
摘要: The invention implements a Positive Emitter Coupled Logic (PECL) output using CMOS transistors that approximate the Motorola ECL characteristics into standard PECL termination schemes. By creating a PECL output using a switchable current source the PECL output can be integrated into a Low Voltage Differential Signaling (LVDS) structure. The invention allows the user to switch between PECL and LVDS outputs via control logic by enabling the specific circuit elements for each signaling technology. With this invention, the combination of two drivers on one IC device gives system designers the flexibility to use the same circuitry in two separate signaling schemes. Thus, the designers can select to use one output characteristics or the other for their designs.
摘要翻译: 本发明使用CMOS晶体管实现了正发射极耦合逻辑(PECL)输出,其将摩托罗拉ECL特性近似为标准PECL端接方案。 通过使用可切换电流源创建PECL输出,PECL输出可以集成到低电压差分信号(LVDS)结构中。 本发明允许用户通过使每个信号技术的特定电路元件经由控制逻辑在PECL和LVDS输出之间切换。 利用本发明,一个IC器件上的两个驱动器的组合为系统设计人员提供了在两个单独的信令方案中使用相同电路的灵活性。 因此,设计师可以选择使用一种输出特性或另一种用于其设计。
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