Visible to Intel only — GUID: raf1476294206817
Ixiasoft
Visible to Intel only — GUID: raf1476294206817
Ixiasoft
15.6. Reset and Clock Requirements
The core is a single clock domain design. The frequency of the single clock source must be maintained throughout the run time period. This requirement is needed because the implementation of SCL low, SCL high, and SDA hold period is based on the frequency of the single clock source. If the frequency of the clock changes in the middle of the run time, the initial configuration of SCL low, SCL high and SDA hold period will be unable to produce the correct timing. On the next run, the system reconfigures those options to ensure correct timing is produced.
The core has a single reset input which is used to reset the entire core. The single reset input is required to be asynchronously asserted and synchronously de-asserted. The de-assertion of the reset must be synchronous to the single input clock source of the core. The reset synchronizer should be implemented externally.