Colibri Carrier Board Design Guide
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Carrier Board Design Guide
This document is a guideline for developing a carrier board that confirms to the specifications
for the Colibri Computer Module
Initial Release: Preliminary Version
Correct figure 3 and figure 4 in section 2.3.2 (positive and negative USB
signals were swapped in schematics)
Corrections in figure 4 in section 2.3.2 (pull up resistor of USB_OC# and
pull-down of USBH_EN where swapped)
Correction in typical pull-up value for I2C in section 2.9
Add section 2.1.4 "Pin Reset State"
Section 2.16: Updated information to the input voltage range
Section 2.17: Add a note to the usage of PXA270
Section 0: insert information to nVDD_FAULT, nGPIO_RESET, and
nBATT_SENSE
Section 3.6: Add information to bulk capacitors.
Section 2.2, Ethernet: Minor correction in figure 2
Section 2.5, HDMI/DVI: Correction in figure 12 (differential pair
impedance value)
All reference schematic images: Cosmetic update.
Section 1.2, Section 4 & Section 5: Updated web-links
Section 2.2.2: Add recommendation for ESD protection diodes
Section 2.3.1: Add note regarding default polarity of USB_H_PWR_EN
Section 2.3.2: Add USB OTG reference schematic
Section 2.3.2: Remove 15k pull down on USB data signals
Section 2.3.2.3: Change to the active low version of the power switch
(TPS2042 instead of TPS2052)
Section 2.15.3: Update recommendation for unused touch signals
Section 2.16.1: Correct pin numbers
Section 2.3.2.2: Update figure 4
Section 3.7: Add backfeeding recommendations
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