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TFP401APZP

Let me tell you a bit about the TFP401APZP chip. If you’re designing anything that involves video signals, this one’s pretty handy. It supports a single-link TMDS interface and fully complies with the DVI 1.0 standard. That means it can easily handle pixel clock frequencies up to 165MHz, giving you crisp resolutions as high as 1920×1200.

Inside, it has a built-in TMDS receiver and decoder that outputs clear, 24-bit true-color RGB data. Plus, it has hot-plug detection and automatic synchronization, which really boosts compatibility with various devices. And because it runs at low power, it’s ideal for portable gadgets or battery-sensitive applications.

Finally, it comes in a compact 100-pin TQFP package (PZP), making your PCB layout neat and integration smoother.

TFP401APZP Pinout Diagram

When you’re using the TFP401APZP chip, you’ll want to pay attention to pin functions to keep your design stable. The PD pin manages the chip’s overall power state—pull it low to enter a low-power mode—while the PDO pin controls the output drivers, setting most outputs to high impedance if it’s low. PIXS selects your pixel mode, and STAG helps control pixel interleaving to reduce noise. SCDT confirms you’ve got a valid sync signal. TMDS inputs Rx0±, Rx1±, Rx2±, and RxC± handle blue, green, red, and clock signals. QE and QO pins output image data based on your chosen mode. Keep these guidelines in mind for smooth operation.

TFP401APZP Hdmi To Rgb Circuit & TFP401APZP Schematic For Video Decoder

When you’re dealing with HDMI signals using the TFP401APZP chip, here’s how things typically work: First, your HDMI signals enter through differential inputs (like RxC±, Rx0±, Rx1±, Rx2±). Inside the chip, these signals get buffered and decoded from the TMDS serial format into parallel 24-bit RGB data. Alongside RGB, you’ll also get synchronization signals—HSYNC, VSYNC, and DEN—coming out from dedicated output pins. These outputs let you directly drive external displays such as LCD panels or other RGB modules. To keep everything synchronized, the chip uses an external 28.6363 MHz crystal oscillator as a stable clock source. And don’t forget, this chip needs different voltage levels—typically 1.8V and 3.3V—supplied through the DVDD (digital) and IVDD (analog internal) power pins, making sure each part inside the chip works correctly and smoothly.、

TFP401APZP Ti Hdmi Dvi Receiver & TFP401APZP To Lcd Panel Interface

Let’s say you’re building your own custom HD display, maybe for a Raspberry Pi, industrial control board, or some embedded multimedia system. You’ll likely need to convert HDMI signals into TTL RGB signals that your TFT LCD panel can actually use—and that’s where the TI TFP401APZP chip steps in to help.

Imagine you’re expanding the display capabilities of a Raspberry Pi or adding touchscreen functionality to industrial equipment. First, you’ll connect your HDMI source—such as a PC or Raspberry Pi—to receive TMDS differential signals (clock and RGB data) via standard HDMI input. These signals then pass through 0.1μF AC coupling capacitors directly to the TFP401APZP’s differential inputs (RXC±, RX0±, RX1±, RX2±). Inside the chip, all the complex signal decoding gets done automatically, turning TMDS signals into clear 24-bit RGB data, along with sync signals (HSYNC, VSYNC) and data enable signals (DEN). Finally, you feed these signals straight to your LCD panel, creating an easy, stable HD video solution.

TFP401APZP Edid Configuration Example

Here’s how you can set up an EDID configuration circuit using the TFP401AZP chip paired with a 24LC02 EEPROM. This circuit helps your HDMI device, like a PC or Raspberry Pi, automatically configure video signals by reading stored EDID data.

You’ll start by powering both the TFP401AZP and 24LC02 with a stable 3.3V supply. Don’t forget to include two 4.7kΩ pull-up resistors on the I²C lines (SCL, SDA) for reliable data communication. Your HDMI interface’s DDC clock and data lines should directly connect to the TFP401AZP and EEPROM’s respective SCL and SDA pins, letting your HDMI source easily access EDID info.

With all address pins (A0, A1, A2) grounded, your EEPROM’s address becomes the standard 0x50. The WP (write-protect) pin is controlled by TFP401AZP, protecting your EDID settings from accidental changes.

Once connected, your HDMI source reads EDID from the EEPROM, automatically configuring video signals that the TFP401AZP decodes into RGB, powering your external TFT LCD perfectly.

TFP401APZP vs TFP401A Performance

Looking at the table above, you’ll notice the TFP401APZP and TFP401A chips are almost identical in terms of overall performance and packaging. But the biggest difference comes down to how they handle HSYNC jitter. The TFP401A has a built-in HSYNC regeneration circuit, making its output signals significantly more stable.

So here’s my suggestion: If you’re working in an environment with good signal quality, and your project doesn’t demand ultra-stable video synchronization, then the TFP401APZP is perfectly fine—and it’ll probably save you some money.

However, if your application involves precision displays—like those used in high-end industrial systems, medical equipment, or professional-grade monitors—then you’ll want to opt for the TFP401A. Its HSYNC jitter correction ensures top-notch display quality and system reliability.

Always consider your specific HSYNC stability needs and cost factors carefully, and choose the chip that best fits your project requirements.

TFP401APZP Rgb Output Wiring

If you’re wiring the TFP401APZP chip to an LCD display, here’s exactly how you’d do it. First, you’ll deal with the RGB signals, which come in three separate 8-bit channels: connect pins 83–90 for red, 91–98 for green, and 99–106 for blue directly to your LCD’s RGB inputs.

Next up, you’ll handle sync signals to ensure everything stays timed right. Connect HSYNC (pin 107), VSYNC (pin 108), DE (data enable, pin 109), and ODCK (data clock, pin 110) straight to your LCD’s matching input pins.

You’ll also have some configuration pins to adjust how your chip works: PIXS decides whether you output one pixel per clock (low) or two pixels per clock (high). OCK_INV flips your clock polarity if needed, and the ST pin sets the drive strength—go high for stronger signals or low if you don’t need the extra strength.

Make sure to power your chip correctly: DVDD needs 1.8V, while AVDD and PVDD require 3.3V each. Use proper decoupling capacitors right next to these pins to keep noise down.

And if your system needs EDID information, just hook up an EEPROM like the 24LC02 chip to your DDC lines: pin 111 (SCL) and pin 112 (SDA). This lets your HDMI source easily detect your display’s capabilities automatically.

TFP401APZP Display Interface Ic

If you’re looking to convert HDMI or DVI signals into parallel RGB for your TFT LCD panels, the TFP401APZP chip can make things easy for you—perfect for DIY LCD displays or custom setups. It’s also great if you’re working with digital projectors, ensuring you get crystal-clear, stable images even at high resolutions. For those involved in embedded systems—think industrial controls, medical devices, or anywhere high-quality visuals really count—this chip helps you achieve reliable, professional-grade displays. And if you’re into education tech or presentations, like interactive whiteboards or multimedia classrooms, it’ll give your visuals that extra clarity and stability you need.

TFP401APZP Fpga Hdmi Input