The sys_rst
signal resets the entire memory
interface design which includes general interconnect (fabric) logic, RIU interface
logic,
MicroBlaze™
, and calibration logic. The
sys_rst
input signal is synchronized internally to
create the ui_clk_sync_rst
signal. The ui_clk_sync_rst
reset signal is synchronously asserted and
synchronously deasserted.
The following figure shows the ui_clk_sync_rst
signal (fabric reset) is synchronously asserted with a few clock delays after the
sys_rst
signal is asserted. When the ui_clk_sync_rst
signal is asserted, there are a few clocks
before the clocks are shut off.
Figure 1. Reset Sequence Waveform
The following are the reset sequencing steps:
- Reset to design is initiated after the
ui_clk_sync_rst
signal goes High. - The
init_calib_complete
signal goes Low when theui_clk_sync_rst
signal is High. - Reset to design is deactivated after the
ui_clk_sync_rst
signal is Low. - After the
ui_clk_sync_rst
signal is deactivated, theinit_calib_complete
signal is asserted after calibration is completed.