The uPD720114GA is a USB 2.0 Host Controller manufactured by NEC (now Renesas Electronics). It provides USB host functionality to embedded systems, allowing them to connect and communicate with a wide range of USB devices, such as printers, storage devices, and input peripherals.
Applications
- Embedded systems
- Industrial PCs
- Point-of-sale (POS) systems
- Set-top boxes
- Automotive infotainment systems
Features
- USB 2.0 Compliant: Supports high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) USB devices.
- Two USB Ports: Allows simultaneous connection of two USB devices.
- Host Controller Interface (HCI): Complies with the Universal Host Controller Interface (UHCI) standard.
- Root Hub: Provides the USB root hub functionality for the system.
- Integrated Transceivers: Includes the necessary USB transceivers for communication.
- Power Management Features: Supports power saving modes to reduce power consumption.
- Interrupt Controller Interface: Generates interrupts to notify the host processor of USB events.
Benefits
- Connectivity: Enables a wide range of USB devices to be connected to the system.
- High Performance: Supports high-speed USB 2.0 data transfer rates.
- Standard Compliance: Complies with industry standards for USB host controllers.
- Low Power Consumption: Power management features minimize energy usage.
- Simplified Integration: Integrated transceivers and root hub simplify system design.
Additional Details
The uPD720114GA connects to the host processor via a standard interface, typically PCI or a similar bus. It supports various interrupt modes for efficient handling of USB events. The device's power management features include suspend and resume capabilities, allowing the system to conserve power when USB devices are not actively being used. It typically requires an external clock source for operation. The GA likely denotes a specific package type. It is often used in conjunction with a USB device controller to provide full USB host and device capabilities to an embedded system.
The driver software for the uPD720114GA is typically provided by the operating system or can be obtained from Renesas Electronics. The datasheet provides detailed information on pin assignments, electrical characteristics, and programming guidelines. When designing a system with the uPD720114GA, it's essential to ensure that the power supply, clock source, and interface signals meet the specifications outlined in the datasheet.
