The TFP401APZP is a digital receiver panel interface from Texas Instruments. It's designed to provide a simple, low-cost single-chip solution for interfacing digital video from PCs and other digital video transmitters to digital displays. Here is a general description of an application circuit: 

1. Power Supply: The TFP401APZP operates with a power supply voltage of 3.3V. Decoupling capacitors are typically placed close to the VCC and GND pins to ensure stability.

2. Digital Video Input: Digital video signals are input through the PCLK, DE, SYNC, SYNC, and DATA[0:23] pins. These signals are typically sourced from a digital video transmitter like a GPU. 

3. Panel Power Sequencing: The panel power-up and power-down sequences are controlled by the STANDBY and PDWN pins. These pins can be driven by an MCU or other control logic in your system. 

4. Output: The output of the TFP401APZP is a LVDS (Low Voltage Differential Signaling) interface which can be directly connected to a compatible digital panel. The LVDS pairs are CLOUT+, CLOUT-, TXOUT0+, TXOUT0-, TXOUT1+, TXOUT1-, TXOUT2+, TXOUT2-, TXOUT3+, and TXOUT3-. 

5. Configuration: The device configuration is controlled through the I2C interface (SCL and SDA pins). The display resolution, color depth, and other settings can be configured via this interface. 

6. Interrupt: The INT pin can be connected to an MCU or other logic to handle interrupt events from the TFP401APZP.

7. Hot Plug Detect: The HPD pin is used to detect the presence of a panel. When a panel is connected, the HPD pin can drive an interrupt to the system controller. 

Remember, this description is a high-level overview and does not cover all the potential features and intricacies of designing a circuit with the TFP401APZP. Always refer to the TFP401APZP data sheet and any other relevant resources provided by Texas Instruments for more specific information on designing your application circuit.