User's Manual l MBa8Xx UM 0100 l © 2020, TQ-Systems GmbH
Page 27
3.8.6
Display interfaces
3.8.6.1
eDP / DisplayPort
In addition to the standard LVDS interface (X14), an eDP or DisplayPort connection is also available on the MBa8Xx to connect
monitors. This is implemented with the DSI-Bridge SN65DSI86, which converts both LVDS/DSI ports of the TQMa8Xx to an
embedded DisplayPort. Thus the port supports 4K and Full HD.
TQMa8Xx
MIPI_DSI0
MIPI_DSI1
I2C1
DisplayPort
(X23)
SN65DSI86
Channel A
I2C
Channel B
ML[3:0]
AUX
HPD
Optional at LVDS
Header (X14)
V_3V3_MB
Header
(X5)
IRQ
PCA9538A
IO_4
EN
DP_IRQ
Figure 13: Block diagram DisplayPort / eDP
Note: Specification differences between eDP and DisplayPort
Due to different electrical specifications of eDP and DisplayPort, it may be necessary to adjust the
voltage swing or pre-emphasis level via software. For details see data sheet of SN65DSI86.
Note: Parallel usage of LVDS and DisplayPort interfaces
The information on limited use of the LVDS interface with simultaneous use of the DisplayPort
interface in chapter 3.8.6.2 must be observed.