Multi-purpose interface for configuration data and user fabric data

A method to reconfigure a programmable logic device, comprising:

• selecting for reassignment a first channel of a microbump interface assigned to a fabric data interface that couples the microbump interface to programmable fabric, wherein the microbump interface couples a fabric die and a base die, the fabric die comprises the programmable fabric and a configuration memory, and wherein the programmable fabric comprises a first circuit design;
• assigning the first channel to a configuration data interface that couples the microbump interface to the configuration memory of the fabric die, wherein the fabric die comprises first interface circuitry configurable to operate at an internal data rate, wherein the first channel is configurable to operate at a microbump data rate larger than the internal data rate, and wherein the first channel is configurable to perform a clocking adjustment to match the internal data rate to the microbump data rate;
• and
• programming the programmable fabric by writing a fabric configuration bitstream to the configuration memory from the base die to the configuration memory through the first channel, wherein the fabric configuration bitstream comprises a second circuit design.

An electronic device, comprising:

• a fabric die that comprises:
• programmable fabric;
• configuration memory configurable to program the programmable fabric;
• and
• first interface circuitry coupled to a microbump interface;
• and
• a base die comprising second interface circuitry coupled to the microbump interface, wherein the microbump interface comprises a plurality of microbump data signals and a plurality of channels, wherein the plurality of channels is configurable to couple to the plurality of microbump data signals, and wherein a channel of the plurality of channels comprises a first block configurable to exchange fabric data with the programmable fabric, a second block configurable to exchange configuration data with an embedded memory, and a multiplexer configurable to provide access from the first block or the second block to the microbump interface.