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What is ULPI transceiver?
ULPI is a lower pin-count version of that internal interface. This is beneficial for smaller and lower-cost devices. Announced on March 1, 2004, the ULPI specification provides a low-pin, low-cost, small form-factor transceiver interface for any USB application.
What is a USB transceiver?
The universal serial bus (USB) transceiver family includes high-speed USB OTG ULPI (UTMI+ low pin interface) transceivers and full-speed OTG (On-The-Go) transceivers. They provide a complete solution for connecting a digital USB OTG and ULPI controller to a physical universal serial bus.
What is Ulpi interface?
ULPI is a standards based interface designed to provide a high capacity point-to-point connection between an SoC or ASIC to a Hi-Speed USB Transceiver, as shown in Figure 2.1. ULPI is a reduced pincount encapsulation and extension of the USB Transceiver Macrocell Interface (UTMI) and UTMI+ Specification.
Is WIFI MAC address same as Ethernet?
The MAC (Media Access Control) address is a devices hardware address. Each device on a local area network must have a unique MAC address assigned. The MAC address is often referred to as the Ethernet Address on an Ethernet network. They are in fact the same thing.
What’s the difference between UTMI and ULPI in USB?
ULPI was developed by a group of USB industry leaders to address the need for low-cost USB and OTG PHYs. Existing specifications including UTMI and UTMI+ were developed primarily for Macrocell (IP) development, and are not optimized for use as an external PHY.
What does ULPI stand for in serial bus?
The Universal Serial Bus (USB) is a serial data interface that supports data exchange between a host computer and a device. ULPI defines an interface between the Link and USB Transceiver to enable a transceiver to Serial Interface Engine (SIE), or “Link”, connection with only 12 pins.
What are the characteristics of the ULPI interface?
The clock is running and is stable with the characteristics defined in section 3.6. The ULPI interface carries commands and data that are synchronous to clock. Low Power Mode The PHY is powered down with the clock stopped. The PHY keeps dir asserted, and the data bus is redefined to carry LineState and interrupts.
How is USB defined as an external interface?
USB defines the external interface (physical, electrical, various layers of signalling). The PHY (physical interface circuitry) that presents USB interfaces also has to interface to the host computer. This is done using a UTMI interface