DRA790 Datasheet, PDF (397/436 Pages) Texas Instruments – Infotainment Applications Processor

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DRA790, DRA791
DRA793, DRA797
SPRS968A – AUGUST 2016 – REVISED FEBRUARY 2017
1. Transition Minimized Differential Signaling (TMDS) high speed digital video interface
2. Display Data Channel (I2C bus for configuration and status exchange between two devices)
3. Consumer Electronics Control (optional) for remote control of connected devices.
The DDC and CEC are low speed interfaces, so nothing special is required for PCB layout of these
signals.
The TMDS channels are high speed differential pairs and therefore require the most care in layout.
Specifications for TMDS layout are below.
Figure 7-33 shows the HDMI interface schematic.
Device
hdmi_tx*-
hdmi_tx*+
CMF
Place near connector, and keep routing short
SPRS85x_PCB_HDMI_1
Figure 7-33. HDMI Interface High Level Schematic
Figure 7-34 presents placement diagram for HDMI interface.
CMF
CMF
CMF
CMF
SPRS85x_PCB_HDMI_2
Figure 7-34. HDMI Placement Diagram
INTERFACE
HDMI
Table 7-12. HDMI Component Reference
DEVICE
ESD
CMF
SUPPLIER
TI
Murata
PART NUMBER
TPD1E05U06
DLW21SN900HQ2
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Applications, Implementation, and Layout 397
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