Figure 5-7. POK Block Diagram
Why is it compared with 0.45V? Isn't it compared to the threshold?
Thanks and regards,
Shukai
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Figure 5-7. POK Block Diagram
Why is it compared with 0.45V? Isn't it compared to the threshold?
Thanks and regards,
Shukai
Shukai,
The threshold voltage is scaled by the resistor dividers to reference to 0.45V
The three taps on the top left of the picture are somewhat confusing -- only one is hard-wired in building the SoC. So, if you have a pin (V19) VMON_IR_VEXT, it is tied to the VDD_MON1P8 tap. The POK_SA uses the same 0.45V but does not have an internal voltage divider so that the user must provide that externally for the VMON_ER_VSYS pin (M26).
Kevin