User Manual

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8.1 element14 BeagleBone Black Cape Compatibility
The main expansion headers are the same between the BeagleBone and element14
BeagleBone Black. While the pins are the same, some of these pins are now used on the
element14 BeagleBone Black. The following sections discuss these pins.
The Power Expansion header was removed from the element14 BeagleBone Black and is
not available.
PAY VERY CLOSE ATTENTION TO THIS SECTION AND READ CAREFULLY!!
8.1.1 LCD Pins
The LCD pins are used on the e l e m e n t 1 4 BeagleBone Black to drive the HDMI
framer. These signals are listed in Table 14 below.
Table 14
P8 LCD Conflict Pins
P
IN
P
ROC
N
A
M
E
M
OD
E
0
27 U5 GPIO2_22 lcd_vsync
28
V5
G
PI
O
2_2
4
lcd
_
p
c
l
k
29 R5 GPIO2_23 lcd_hsync
30 R6 GPIO2_25 lcd_ac_bias_en
31 V4 UART5_CTSN lcd_data14
32
T5
UA
R
T
5_
R
T
SN
lcd
_
da
t
a
1
5
33 V3 UART4_RTSN lcd_data13
34 U4 UART3_RTSN lcd_data11
35
V2
UA
R
T
4_
C
T
SN
lcd
_
da
t
a
1
2
36 U3 UART3_CTSN lcd_data10
37
U1
UA
R
T
5_
TXD
lcd
_
da
t
a
8
38 U2 UART5_RXD lcd_data9
39 T3 GPIO2_12 lcd_data6
40
T4
G
PI
O
2_1
3
lcd
_
da
t
a
7
41 T1 GPIO2_10 lcd_data4
42
T2
G
PI
O
2_1
1
lcd
_
da
t
a
5
43 R3 GPIO2_8 lcd_data2
44 R4 GPIO2_9 lcd_data3
45 R1 GPIO2_6 lcd_data0
46 R2 GPIO2_7 lcd_data1
If you are using these pins for other functions, there are a few things to keep in mind:
• On the HDMI Framer, these signals are all inputs so the framer will not be
driving these pins.
• The HDMI framer will add a load onto these pins.
• There are small filter caps on these signals which could also change the
operation of these pins if used for other functions.