Adding HDMI to Circuit
0:00
Work done
- Updated project description to include HDMI interface goals (#HDMI #HighSpeed #Video).
- Updated System Architecture property with the HDMI block diagram.
- Added HDMI Type-A receptacle (1747981-1) as J4.
- Added ESD protection array (TPD12S520DBT) as U2.
- Added DDC pull-ups (R1, R2).
- Added HPD pull-down (R3).
- Added test-pads for TMDS pairs (P3–P8) and control signals (P9–P14) using P3 components.
- Connected HDMI pins to ESD, resistors, and test-pads, creating labeled nets for TMDS0±, TMDS1±, TMDS2±, DDC_SDA, DDC_SCL, HPD, CEC, +5V, and GND.
- Added PCB properties to J4: Placement = “Board Edge”; ClearanceKeepout = 2 mm.
Tasks not done
- Defining TMDS nets as differential pairs with a 100 Ω differential impedance target (requires manual net property assignment).
Success criteria review
- ✅ HDMI connector and support components present in schematic.
- ✅ HDMI nets labeled and exposed to test pads.
- ✅ PCB placement and clearance properties assigned to HDMI connector.
- ⚠️ High-speed differential-pair net properties still need to be defined.
Recommended next step
Define the TMDS differential-pair net impedance properties (100 Ω) using the net properties editor so the design is fully ready for high-speed routing.
111 days
Plan completed.
Show Plan
J4 CEC - U2 CE_REMOTE_IN
J1
J4 Ground - U2 GND
J4 Ground - U2 GND
J4 DDC Data - U2 DDC_DAT_IN
J4 +5V Power - U2 5V_SUPPLY
J2
J4 DDC Clock - U2 DDC_CLK_IN
J3
GND
J4 Hot Plug Detect - U2 HOTPLUG_DET_IN
RESET
GND
A1
AREF
P3
+3V3
A3
SDA
VBAT
P4
RX
A5
A6
A2
P11
VIN
NTC
+5V
P9
A4
TX
SCL
P10
P5
A0
Reviews
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Inspect
Arduino Nicla Voice
Controls
Properties
Part Type
Integrated Circuit
Designator Prefix
U
Manufacturer Part Number
ABX00061
Manufacturer Name
System Architecture
graph TD
NiclaVoice((Arduino Nicla Voice))
HDMI_CONN((HDMI Type-A Receptacle))
ESD_PROT((ESD Protection Array))
DDC_PULLUP((2x DDC Pull-Up Resistors))
HPD_PULLDOWN((HPD Pull-Down Resistor))
TESTPADS((Test Pads/Headers))
NiclaVoice---|TMDS/CEC/DDC/HPD/5V/GND|HDMI_CONN
HDMI_CONN-->|TMDS/CEC|ESD_PROT
HDMI_CONN-->|DDC|DDC_PULLUP
HDMI_CONN-->|HPD|HPD_PULLDOWN
HDMI_CONN-->|All HDMI signals|TESTPADS
Assets
- ABX00061-step.step
id=ABX00061-step
- ABX00061.png
id=ABX00061
3d Model
Thumbnail
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