BeagleBone Black - 8.1 BeagleBoneBlack Cape Compatibility

REF: BBONEBLK_SRM
BeagleBone Black System
Reference Manual
Rev A5.2
Page 82 of 108
8.1 BeagleBoneBlack Cape Compatibility
The main expansion headers are the same between the BeagleBone and BeagleBone
Black. While the pins are the same, some of these pins are now used on the BeagleBone
Black. The following sections discuss these pins.
The Power Expansion header was removed from the 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 BeagleBone Black to drive the HDMI framer. These
signals are listed in Table 12 below.
Table 12. P8 LCD Conflict Pins
PIN
PROC
NAME
MODE0
27
U5
GPIO2_22
lcd_vsync
28
V5
GPIO2_24
lcd_pclk
29
R5
GPIO2_23
lcd_hsync
30
R6
GPIO2_25
lcd_ac_bias_en
31
V4
UART5_CTSN
lcd_data14
32
T5
UART5_RTSN
lcd_data15
33
V3
UART4_RTSN
lcd_data13
34
U4
UART3_RTSN
lcd_data11
35
V2
UART4_CTSN
lcd_data12
36
U3
UART3_CTSN
lcd_data10
37
U1
UART5_TXD
lcd_data8
38
U2
UART5_RXD
lcd_data9
39
T3
GPIO2_12
lcd_data6
40
T4
GPIO2_13
lcd_data7
41
T1
GPIO2_10
lcd_data4
42
T2
GPIO2_11
lcd_data5
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.