HI,
I have been designing a microcontroller based circuit. it consists of an AVR32 uC, a wiznet w5100 hardwired ethernet controller and another PHY IC as the main devices. All these devices need to be reset when the board is powered up.
2 ways i could use are : a. use a reset IC that will simultaneously reset all devices on powerup OR b. since the uC anyway has a built-in POR, i could use its GPIO pins to reset the other devices.
for option b., this would mean the other devices reset only after the uC has initialised after its own reset. so, is it ok to use this technique? could the delay in resetting the other devices cause trouble?
this is my first time at microcontroller based design.
Thanks in advance
I have been designing a microcontroller based circuit. it consists of an AVR32 uC, a wiznet w5100 hardwired ethernet controller and another PHY IC as the main devices. All these devices need to be reset when the board is powered up.
2 ways i could use are : a. use a reset IC that will simultaneously reset all devices on powerup OR b. since the uC anyway has a built-in POR, i could use its GPIO pins to reset the other devices.
for option b., this would mean the other devices reset only after the uC has initialised after its own reset. so, is it ok to use this technique? could the delay in resetting the other devices cause trouble?
this is my first time at microcontroller based design.
Thanks in advance