Contents
What is ULPI in USB?
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.
What is USB PHY?
1 PHY is an IP version of USB transceiver. It is designed in standard logic to interface with the physical layer of Universal Serial Bus. It is capable of transmitting and receiving serial data at either full speed (12M bit/s) or low speed (1.5M bit/s) data rate.
What is 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 MAC and PHY?
The PHY layer defines the physical and electrical characteristics of the network. It is responsible for managing the hardware that modulates and demodulates the RF bits. The MAC layer is responsible for sending and receiving RF frames.
Is phy a word?
No, phy is not in the scrabble dictionary.
What is a MAC packet?
MAC addresses are 48 bits in length and are usually displayed as a 12 digit hexadecimal number. A packet is one unit of binary data ca- pable of being routed through a computer network. To improve communication performance. and reliability, each message sent between. two network devices is often subdivided.
What does PHY stand for?
physical layer
A PHY, an abbreviation for “physical layer”, is an electronic circuit, usually implemented as an integrated circuit, required to implement physical layer functions of the OSI model in a network interface controller.
What does Phra stand for?
PHRA
| Acronym | Definition |
|---|---|
| PHRA | Pennsylvania Human Relations Act |
| PHRA | Protection of Human Rights Act (India) |
| PHRA | Pittsburgh Human Resources Association |
| PHRA | Public Housing Reform Act of 1998 (aka Quality Housing and Work Responsibility Act of 1998) |
How does an ULPI transceiver work on a USB?
It allows USB ASICs to interface with the physical layer of the USB through a 12-pin interface. It contains VBUS comparators, an ID line detector, USB differential drivers and receivers and a complete ULPI register map and interrupt generator.
What is ULPI and what is UTMI +?
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.
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.