Hi,
On the DM8168 data sheet it is mention for the RSTOUT pin the following.
7.2.13 RSTOUT
The RSTOUT pin on the device reflects device reset status and is de-asserted (high) when the device is
out of reset. In addition, this output is always 3-stated and the internal pull resistor is disabled on this pin
while POR or RESET is asserted; therefore, an external pullup or pulldown can be used to set the state of
this pin (high or low) while POR or RESET is asserted. For more detailed information on external pullups
and pulldowns, see Section 4.3.1. This output is always asserted low when any of the following resets
occur:
• Power-on reset (POR)
• External warm reset
• Emulation warm reset (RESET)
• Software global cold or warm reset
• Watchdog timer reset.
The RSTOUT pin remains asserted until PRCM releases the host ARM Cortex-A8 processor for reset.
If I understand correctly the RSTOUT pin is “floating” during the POR or RESET are asserted and the internal resistor is disable. It means that the RSTOUT should have a pull down resistor to maintain the reset.
On the spectrum digital and UD works EVB there is no such a resistor. On the DM8148 there is.
Is it correct that a resistor should be connected to the RSTOUT pin on the DN8168?
