EP91X4

The EP91X4 chip is a USB Type-C controller. Equivalent alternatives include:
- TPS65988 (Texas Instruments)
- STUSB4500 (STMicroelectronics)
- FUSB302B (ON Semiconductor)
- CYPD3174 (Cypress/Infineon)
These chips offer similar USB PD (Power Delivery) and Type-C port control functionalities. Check datasheets for exact compatibility with your application.

The EP91X4 is a compact, high-performance embedded system featuring:
- Processor: Intel Core i7 or i5 (11th Gen) for powerful computing.
- Memory: Up to 64GB DDR4 RAM for multitasking.
- Storage: Supports M.2 NVMe SSD and 2.5" SATA HDD/SSD.
- Graphics: Intel Iris Xe (i7) or UHD (i5) for smooth visuals.
- Connectivity: Dual Gigabit LAN, Wi-Fi 6, Bluetooth 5.2.
- Ports: USB 3.2, HDMI 2.0, DisplayPort, COM, and audio jacks.
- Expansion: PCIe slots for additional cards.
- OS Support: Windows 10/11, Linux.
- Power: 12V DC input with wide voltage range.
- Dimensions: Compact fanless design for space efficiency.
Ideal for industrial automation, digital signage, and edge computing.

The EP91X4 is a 48-pin IC primarily used for HDMI/DVI signal processing. Key functions include:
- Signal Switching: Supports HDMI/DVI input switching.
- EDID Management: Handles Extended Display Identification Data for display compatibility.
- HDCP Support: Ensures content protection compliance.
- Audio Embedding/Extraction: Processes embedded audio in HDMI signals.
Pins are allocated for power (3.3V/5V), I²C communication, HDMI/DVI differential pairs, and control signals (e.g., HPD, CEC). Exact pinout varies by model; refer to the datasheet for specifics.

The EP91X4 is manufactured by Epson, a Japanese multinational company known for its electronics, particularly printers, projectors, and imaging equipment. Epson specializes in precision technology, including inkjet and laser printers, scanners, and wearable devices. The company is recognized for innovation, reliability, and sustainability in its product lineup. The EP91X4 is likely part of Epson's business projector series, designed for professional or educational use.
Epson, founded in 1942 and headquartered in Suwa, Nagano, operates globally under Seiko Epson Corporation. It is a leader in digital imaging and projection solutions.