公开(公告)号：US09267989B2

公开(公告)日：2016-02-23

申请号：US14172292

申请日：2014-02-04

Applicant: QUALCOMM Incorporated

Inventor： Wei Chen ,  Yucong Tao ,  Matthew L. Severson ,  Jeffrey R. Gemar ,  Chang Yong Yang

IPC: G01R31/28 ,  G01R31/3177 ,  G01R31/30 ,  G01R31/3185

CPC classification number: G01R31/3177 ,  G01R31/3008 ,  G01R31/318575

Abstract: Provided are apparatus and methods for testing an integrated circuit. In an exemplary method for testing an integrated circuit, a test controller and a power manager are integrated into a main power domain of the integrated circuit. The test controller can be Joint Test Action Group-compatible. An isolation signal is generated using the power manager. The isolation signal can comprise at least one of a freeze signal configured to isolate an input-output port of the integrated circuit, and a clamp signal configured to isolate a functional module of the integrated circuit. The isolation signal can be stored in a boundary scan register controlled with the test controller. The main power domain is isolated from a power-collapsible domain of the integrated circuit with the isolation signal. Power of the power-collapsible domain is collapsed. When power is collapsed, the power-collapsible domain is tested using the test controller and the power manager. The testing of the power-collapsible domain can comprise testing a power supply current. When power to the power-collapsible domain is collapsed, a level shifter output can be held constant to an output level based on a pre-collapse input from the power-collapsible domain.

Abstract translation: 提供了用于测试集成电路的装置和方法。 在用于测试集成电路的示例性方法中，将测试控制器和功率管理器集成到集成电路的主电源域中。 测试控制器可以与联合测试动作组兼容。 使用电源管理器生成隔离信号。 隔离信号可以包括被配置为隔离集成电路的输入 - 输出端口的冻结信号和被配置为隔离集成电路的功能模块的钳位信号中的至少一个。 隔离信号可以存储在由测试控制器控制的边界扫描寄存器中。 主电源区域与具有隔离信号的集成电路的电源可折叠域隔离。 电源可折叠域的功能崩溃。 当电源崩溃时，使用测试控制器和电源管理器测试电源可折叠域。 功率可折叠域的测试可以包括测试电源电流。 当功率可折叠域的电源被折叠时，电平移位器输出可以基于来自功率可折叠域的预折叠输入而保持恒定到输出电平。

公开(公告)号：US20140223250A1

公开(公告)日：2014-08-07

申请号：US14172292

申请日：2014-02-04

Applicant: QUALCOMM Incorporated

Inventor： Wei Chen ,  Yucong Tao ,  Matthew L. Severson ,  Jeffrey R. Gemar ,  Chang Yong Yang

IPC: G01R31/3177

CPC classification number: G01R31/3177 ,  G01R31/3008 ,  G01R31/318575

Abstract: Provided are apparatus and methods for testing an integrated circuit. In an exemplary method for testing an integrated circuit, a test controller and a power manager are integrated into a main power domain of the integrated circuit. The test controller can be Joint Test Action Group-compatible. An isolation signal is generated using the power manager. The isolation signal can comprise at least one of a freeze signal configured to isolate an input-output port of the integrated circuit, and a clamp signal configured to isolate a functional module of the integrated circuit. The isolation signal can be stored in a boundary scan register controlled with the test controller. The main power domain is isolated from a power-collapsible domain of the integrated circuit with the isolation signal. Power of the power-collapsible domain is collapsed. When power is collapsed, the power-collapsible domain is tested using the test controller and the power manager. The testing of the power-collapsible domain can comprise testing a power supply current. When power to the power-collapsible domain is collapsed, a level shifter output can be held constant to an output level based on a pre-collapse input from the power-collapsible domain.

Abstract translation: 提供了用于测试集成电路的装置和方法。 在用于测试集成电路的示例性方法中，将测试控制器和功率管理器集成到集成电路的主电源域中。 测试控制器可以与联合测试动作组兼容。 使用电源管理器生成隔离信号。 隔离信号可以包括被配置为隔离集成电路的输入 - 输出端口的冻结信号和被配置为隔离集成电路的功能模块的钳位信号中的至少一个。 隔离信号可以存储在由测试控制器控制的边界扫描寄存器中。 主电源区域与具有隔离信号的集成电路的电源可折叠域隔离。 电源可折叠域的功能崩溃。 当电源崩溃时，使用测试控制器和电源管理器测试电源可折叠域。 功率可折叠域的测试可以包括测试电源电流。 当功率可折叠域的电源被折叠时，电平移位器输出可以基于来自功率可折叠域的预折叠输入而保持恒定到输出电平。