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ID: 1535
Case Type: faq
Category: Architecture
Related To: JTAG
Family: Platform Manager

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Why are there two JTAG interfaces in the Platform Manager?

There are two JTAG ports integrated into the Platform Manager device: Power JTAG and FPGA JTAG.

The Power JTAG interface is used to program the power section of the Platform Manager and the FPGA JTAG is used to con-figure the FPGA portion of the device. The FPGA configuration memory can be changed in-system without interrupting the operation of the board management section. However, the Power Management section of the platform Manager cannot be changed without interrupting the power management operation.

For more information regarding the JTAG interfaces see the following sections of the Platform Manager Datasheet,  JTAG ports, In system Programming, Alternate Programming, and JTAG port Pin descriptions.