Josh Jordan

SIM_PCE ghost register

Discussion created by Josh Jordan on Dec 7, 2006
Latest reply on Dec 7, 2006 by Josh Jordan
here is an excerpt from the MCF5213 reference manual refering to normal ADC power mode.

1. Normal power mode
This mode operates when:
— At least one ADC converter is powered up (PD0 or PD1=0 in the POWER register);
— Both auto power-down and auto standby modes are disabled (APD=0, ASB=0 in
— The ADC’s clock is enabled (ADC=1 in the SIM module’s SIM_PCE register).

I am having trouble making the ADC work I suspect because I never set the ADC bit in the SIM_PCE register. The problem is, I cant find it anywhere! A search only finds references to this ghost module in the ADC section. A search for SIM_PCE in the include directory finds nothing. What do they mean by SIM_PCE and how come this particular string only shows up in the section describing the ADC? If there actually were a SIM_PCE register wouldn't it be described in detail somewhere? I would gladly set this bit if I could find it. Is something very simple completely going over my head?

Message Edited by J JORDAN on 2006-12-0703:34 PM