beaglebone-black - Flipbook - Page 12
BeagleBone Black
• Added reset option (GPIO1_8) for Ethernet PHY to avoid possible start-up issue.
beagleboard.org/beagleboard/beaglebone-black/-/issues/4.
See https://git.
• Added series resistors to MMC1 lines and depopulated C24.
• Connected pin A6 of J5 on U13 (eMMC IC) to DGND.
• Changed USB1_VBUS series resistor to 0 ohm.
• Change required PCB revision to C.
Initial boxes mistakenly say rev C1.
2.2.3 Rev C2
PCB revision B6.
• Update memories based on availability. See https://github.com/beagleboard/beaglebone-black/commit/
74914bd01efeb61376ec3dda4bf9143ad2bb635c.
– DDR3:
∗ Kingston D2516EC4BXGGB-U
– eMMC:
∗ Kingston MMC04G-M627-X02U
2.2.4 Rev C1
PCB revision B6.
• Update memories based on availability. See https://github.com/beagleboard/beaglebone-black/commit/
5787736d816832cc8cc9629d19f334b6a12e67f9.
– DDR3:
∗ Micron MT41K256M16TW-107:P
– eMMC:
∗ Micron MTFC4GACAJCN-1M WT
∗ Kingston EMMC04G-S100-A08U
2.2.5 Rev C
• Changed the eMMC from 2GB to 4GB.
2GB devices are getting harder to get as they are being phased out. This required us to move to 4GB. We now
have two sources for the device. This will however, require an increase in the price of the board.
2.2.6 Rev B
• Changed the processor to the AM3358BZCZ100.
2.2.7 Rev A6A
• Added connection from 32KHz OSC_GND to system ground and changed C106 to 1uF.
• Changes C25 to 2.2uF. This resolved an issue we were seeing in a few boards where the board would not
boot in 1 in 20 tries.
2.2. Board Changes
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