ADLINK aTCA-9300 - Manual (Page 19)

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—Supports up to two SPI devices
—Supports 20 MHz, 33 MHz, and 50 MHz SPI devices
„ Firmware Hub I/F supports BIOS Memory size up to 8 MB
„ Low Pin Count (LPC) I/F
„ Analog Display (VGA)
3.2 Peripherals
The following peripherals are available on the aTCA-9300 blade
3.2.1 Reset
The aTCA-9300 is automatically reset by a precision voltage monitoring circuit that detects a
drop in voltage below the acceptable operating limit of 4.85V for the 5V line and below 3.2V for
the 3.3V line. Other reset sources include the Watchdog Timer, the face plate push-button
switch and also the RESET signal from the IPMC. The aTCA-9300 responds to any of these
sources by initializing local peripherals.
A reset will be generated by the following conditions:
ƒ Power failure, +5 V supply falls below 4.1 V (typ.) or +3.3 V supply falls below
2.93 V (typ.)
ƒ Pushbutton "RESET" pressed
ƒ Watchdog time-out
ƒ IPM controller reset