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1. About the High Bandwidth Memory (HBM2E) Interface Intel Agilex® 7 FPGA IP User Guide
2. Introduction to High Bandwidth Memory
3. Intel Agilex® 7 M-Series HBM2E Architecture
4. Creating and Parameterizing the High Bandwidth Memory (HBM2E) Interface Intel® FPGA IP
5. High Bandwidth Memory (HBM2E) Interface Intel® FPGA IP Interface
6. High Bandwidth Memory (HBM2E) Interface Intel FPGA IP Performance
7. Document Revision History for High Bandwidth Memory (HBM2E) Interface Intel FPGA IP User Guide
A. High Bandwidth Memory (HBM2E) Interface Intel® FPGA IP Intel® Quartus® Prime Software Flow
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5.2.1. Reset, Clock, and Calibration Status Signals
Signal | Direction | Description |
---|---|---|
hbm_reset_n | Input | User-initiated, negative-edge HBM reset coming from core fabric. |
hbm_reset_in_prog | Output | Indicates the user-initiated HBM reset is in progress. User attempts to reset while this is active will be ignored. |
Signal | Direction | Description |
---|---|---|
uibpll_refclk | Input | Reference clock input for the UIB PLL. This clock must be stable and free-running at device power-up for successful configuration. Refer to Intel Agilex® 7 pin connection guidelines for information on how to supply this clock. |
fabric_clk | Input | Core clock used to synchronize reset and status signals. |
Signal | Direction | Description |
---|---|---|
local_cal_success | Output | Indicates calibration success. This signal is asynchronous. Once asserted, this signal remains high until an HBM reset with calibration is attempted. |
local_cal_fail | Output | Indicates calibration failure. This signal is asynchronous. Once asserted, this signal remains high until an HBM reset with calibration is attempted. |
Clocking recommendations for Reliable Calibration of the HBM2E Interface
Observe the following clock guidelines for reliable calibration of the HBM2E interface:
- The UIB PLL reference clocks (one per HBM2E interface) must be provided through an external clock source and must be stable and free-running prior to configuration and stable thereafter.