Hardware differences of the BeagleBoard revisions

Revision A

There are some limited early revision Ax prototypes out there used by some hackers hanging around at #beagle channel on irc.freenode.net. See errata for limitations.

Revision B

Revision B is same as revision A, except

• fix for shorted LEDs 0/1
• fix for wrong power jack pinout
• revision B6 uses different package for U9/U11

Still has USB HOST (EHCI) failures. USB HOST (EHCI) connector isn't mounted.
There are 4 revisions of the B board in the field: B4, B5, B6 and B7.
The most notable difference is the use of the ES3.0 silicon in B6 and B7, other changes are not relevant to software developers.

Revision C2

Revision C2 is same as revision B7 except:

• USB HOST (EHCI) is operational on revision C2, with standard USB A female connector.
• Add interface for raw LCDs (mockup)
• It uses updated OMAP3 revision. BeagleBoard revisions B4+B5 uses OMAP3 ES 2.1 (engineering sample), while BeagleBoard revision C2 uses ES 3.0. OMAP3 ES 3.0 fixes minor issues:
  • updated ARM Cortex A8 silicon (r1p3) fixing a very rare NEON issue that has not been seen in real code
• Power measurement feature
• Uses TPS65950 OMAP power controller instead of TWL4030
• Three additional PWM signals on the expansion connector added as pin mux options to existing pins (message)
• Revision detection (to be able to identify C2 board from older boards by software, e.g. for different pin mux)
• 256MB RAM (message) (and still 256MB NAND like rev B)

Note: Revision C2 is the first production version, and all orders from from Digi-Key are shipped as Rev C2.

Revision C3

As revision C2 boards are sold out, revision C3 will ship now.
Revision C3 is same as revision C2 except:

• Optional RTC VL1220 series backup battery
• Mounting holes conected to ground
• Slightly improved S-Video

Revision C4

Revision C4 boards are the same as Revision C3 except:

• Processor is 720MHz capable OMAP3
• Improved USB Host PHY power rails