Invention Grant
US09405604B2 Method and apparatus for connecting debug interface to processing circuits without sideband interface 有权
将调试接口连接到没有边带接口的处理电路的方法和装置

Method and apparatus for connecting debug interface to processing circuits without sideband interface
Abstract:
An integrated circuit (IC) having a debug access port coupled to a processing circuit without a dedicated sideband interface is disclosed. In one embodiment, an IC includes a processor circuit and a DAP. The IC also includes a communications fabric over which communications transactions may be conveyed between the various functional circuits of the IC using a fabric protocol. Both the DAP and the processing circuit are coupled to the communications fabric. The IC also includes a translation circuit coupled between the processing circuit and the communications fabric. The translation circuit may translate transactions conveyed between the processing circuit and the DAP from or to a debug protocol to or from the fabric protocol. Thus, the DAP and the processing circuit may communicate according to the debug protocol without a dedicated sideband coupled therebetween.
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