GL800AHU35 USB 2.0 UTMI Compliant Transceiver IP Core
CHAPTER 1 GENERAL DESCRIPTION
GL800AHU35 a high performance USB 2.0 Transceiver compliant with the UTMI (USB 2.0 Transceiver
Macrocell Interface) Specification proposed by Intel. The UTMI specification defines a standard interface to
USB 2.0 high-speed transceivers that enables common design across prototype and production
implementations.
The GL800AHU35 integrates high-speed, mixed-signal circuitry to serve as the interface between the high
performance USB serial bus and the 16-bit SIE bus. The transceiver is controlled by input signals from the SIE
bus, which is synchronized with the 30MHz clock output. The UTMI transceiver handles the low level USB
protocol and signaling. This includes features such as: data serialization and de-serialization, bit stuffing, clock
recovery and synchronization. The primary focus of the UTMI transceiver is to shift the clock domain of the
data from the USB 2.0 rate to one that is compatible with the general logic.
To eliminate the difficult high-speed, mixed-signal USB 2.0 logic design for system and peripheral developers,
the GL800AHU35 with standard UTMI and 40X improvement in data rate can be easily adapted for
implementation of USB 2.0 high speed compliant design of widely applications, including scanners, printers,
portable storage, external CD-ROM / CD-RW / DVD-ROM, flash card readers, and PC cameras. The IP block
now is certified and available on the 0.35µm UMC, TSMC 0.25µm and 0.15µm UMC standard CMOS
process.
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