REF: BBONEBLK_SRM
BeagleBone Black System
Reference Manual
Rev A5.2
Page 25 of 108
4.1
BeagleBone Compatibility
The board is intended to be compatible with the original BeagleBone as much as
possible. There are several areas where there are differences between the two designs.
These differences are listed below, along with the reasons for the differences.
Sitara XAM3359AZCZ100, 1GHZ, processor.
o
Sorry, we just had to make it faster.
512MB DDR3L
o
Cost reduction
o
Performance boost
o
Memory size increase
o
Lower power
No Serial port by default.
o
Cost reduction
o
Can be added by buying a TTL to USB Cable that is widely available
o
Single most cost reduction action taken
No JTAG emulation over USB.
o
Cost reduction
o
JTAG header is not populated, but can easily be mounted.
Onboard Managed NAND (eMMC)
o
2GB
o
Cost reduction
o
Performance boost x8 vs. x4 bits
o
Performance boost due to deterministic properties vs. SD card
GPMC bus may not be accessible from the expansion headers in some cases
o
Result of eMMC on the main board
o
Signals are still routed to the expansion connector
o
If eMMC is not used, signals can be used via expansion if eMMC is held
in reset
There may be 10 less GPIO pins available
o
Result of eMMC
o
If eMMC is not used, could still be used
The power expansion header, for battery and backlight, has been removed
o
Cost reduction
o
Space reduction
o
Four pins were added to provide access to the battery charger function.
HDMI interface onboard
o
Feature addition
o
Audio and video capable
o
Micro HDMI
No three function USB cable
o
Cost reduction
