Schematics Checklist

Document Category Item
Schematics General Component symbol is correct versus manufacturer datasheet
Schematics General NC pins are correctly handled
Schematics Power Power supplies pins are connected to the right voltage
Schematics Power Quiet / Analog power rails have a PI filter (Capacitor, Ferrite, Capacitor)
Schematics Power There is 1x 100nF capacitor per Power pin
Schematics Power Power sequencing on Power Up is correct
Schematics Power Power sequencing on Power down is correct
Schematics Power Power sequencing when entering sleep mode is correct
Schematics Power Power sequencing when escaping sleep mode is correct
Schematics Power There is no shunt at regulator input or output
Schematics Reset Check that there is a pull up resistor on reset signal
Schematics Reset Reset sequencing on Power Up is correct
Schematics Reset Reset sequencing on Power down is correct
Schematics Reset Reset sequencing when entering sleep mode is correct
Schematics Reset Reset sequencing when escaping sleep mode is correct
Schematics Reset All IC can be reset either at power On or using CPU GPIO
Schematics Configuration Configuration is written on schematics (DDR spec, CPU Frequency, Ratios, L2 cache …)
Schematics Configuration Check that sample at reset resistors have the right value
Schematics Configuration Check that sample at reset resistors are at the right voltage
Schematics GPIO Check that GPIO pins are at the right voltage
Schematics GPIO Check GPIO pins directions are correct on schematics
Schematics GPIO Check that each GPIO is capable of Input or Output
Schematics GPIO Check that if a special hardware fonction is required, it is available (blink, SATA activity, …)
Schematics Connector Pin#1 is indicated on schematics
Schematics Connector Connector name is written on schematics
Schematics Connector Check connectors pinout
Schematics PCB PCB revision is written inside schematics
Schematics PCB PCB reference is written inside schematics
Schematics Analog Check that calibration resistor value and tolerance is correct
Schematics Crystal Check that capacitor load value is correct
Schematics Crystal Check that crystal frequency, tolerance and jitter are correct
Schematics Crystal Check if crystal needs some resistive load
Schematics Differential pair Signal polarity is correct
Schematics Differential pair There is one pair of serial 0402 capacitor
Schematics IC Check Chip address/ID is available on schematics
Schematics Led All leds and buttons backlight can be controlled by software
Schematics Led Check that LED are connected to hardare capable pins (Blink, HDD Activity, …)
Schematics Led Check default state
Schematics Led Check Led colors
Schematics Button Check button RC delay < 20ms
Schematics Button Check button can trigger an IRQ
Schematics Button Check hardware associated functions (wake up)
Schematics GPIO Check hardware associated functions (wake up, shutdown)
Schematics GPIO Check GPIO PCBA identification
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