Visible to Intel only — GUID: uxd1481129787666
Ixiasoft
Visible to Intel only — GUID: uxd1481129787666
Ixiasoft
11.3.7. Security
The clock manager creates a boot clock as the clock reference for boot mode and external bypass. The clock configuration is based on security features in the Secure Device Manager (SDM).
The following table defines the boot clock sources.
Clock Name | Source | Description |
---|---|---|
HPS_OSC_CLK | Pin | External Oscillator Clock Reference. Non-secure clock reference. |
cb_intosc_clk | HPS | Control Block high speed internal ring oscillator. This clock has wide variation across process/temperature. This clock is used as the secure reference for Boot Mode. Because the range/jitter of the clock is low quality, the clock is divided by 2. |