Changes

Jump to: navigation, search

Reset scheme (Maya)

400 bytes added, 07:37, 10 December 2012
RSTOUTn
===RSTOUTn===
This ouput signal is asserted by DM8148 processor until it gets out of reset. It is usually used to reset external memories and peripherals conneteced connetected to processor. It is connected to:
* RSTOUT_WD_OUTn pad of DM8148 processor
* 2k2 pull down resistor.
In case it is used to reset devices on carrier board, :* its driving capability has to be taken into account* internal pull-down is required to keep this signal low while it is 3-stated by processor (please see DM8148 datasheet for more details). In case this signal is connected to devices that integrates internal pull-up, this could lead to a partitor resistor. In turn this might cause undesired voltage level on this line. System designer has to take care of this to prevent uncorrect reset sequence.
===CPU_RESETn===

Navigation menu