78Q2123 MicroPHY® Worlds smallest Ethernet PHY

Teridian Semiconductors' TDK 78Q2123 MicroPHY® is a Fast Ethernet physical layer transceiver (PHY). It is the front end of an Ethernet Application. It translates parallel digital data transmitted by an Ethernet Media Access Controller (MAC) into a serial 100Mb/s analog stream, and vise versa. Thedevice interfaces to a Local Area Network consisting of Category 5 Unshielded Twisted Paircable (Cat-5 UTP).

The 78Q2123 MicroPHY is designed to meet the growing demands of non-traditional networked applications such as game consoles, Set-top Boxes, and digital TVs. The tiny size gives designers an edge when board space is at a premium and its single 3.3V supply requirements eliminates the need for 1.8V regulators.

The integrated HP Auto-MDI/X function, a must for consumer electronic applications, automatically compensates for crossover cable problems eliminating one of the most common items for consumer help lines.

Specifications		Applications
SINGLE CHIP SOLUTION 32 PIN MLF PACKAGE (5x5 mm2) 10/100BTX 802.3 COMPATIBLE FULL MEDIA INDEPENDENT INTERFACE (MII) HP AutoMDI/X - CORRECTS STRAIGHT/CROSS-OVER CABLING ERRORS AUTOMATICALLY 140M CABLE OPERATION ON CAT-5 UTP CABLE INTEGRATED LINE DRIVERS OPERATE WITH 1:1 TRANSFORMERS 3.3V (+/-10%) SUPPLY LOW POWER (95 mA)		IP SET TOP BOXES DIGITAL TVs PRINTERS AND MULTI FUNCTION PRINTERS (MFP) BROADBAND MODEMS DESKTOP COMPUTERS & LAPTOPS EMBEDDED EQUIPMENT

Resources and Documentation

78Q2123 - Data Sheet Teridian's 78Q2123 Ethernet MicroPHY technical specifications and engineering datasheets. Hosted by Teridian Semiconductor   Revision: 1.1 Jan 2006 39 pages - 623Kb 78Q2123 - Design Manual Technical manual and user guide for Teridian's development platform for 78Q2123 Ethernet MicroPHY MII Eval Board. Hosted by Teridian Semiconductor   Revision: 1 Oct 2005 12 pages - 176Kb 78Q2123 - Application Note Application Note describing the loopback operation of the 78Q2123 (both internal loopbacks and external cable loopback). Hosted by Teridian Semiconductor   Revision: 2.0 Oct 2005 7 pages - 112Kb 78Q2123 - Application Notes More Application Notes for the 78Q2123 are available from the Teridian Semiconductor website. Hosted by Teridian Semiconductor   Web Page

Ordering Information

PART NUMBER	PACKAGE TYPE	PACK SIZE	RoHS
78Q2123-IM	32-QFN	490 per tray	NO
78Q2123-IMR	32-QFN	1500 per reel	NO
78Q2123-IM/F	32-QFN	490 per tray
78Q2123-IMR/F	32-QFN	1500 per reel