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September 11, 2000

IDT77105

CORPORATE HEADQUARTERS

2975 Stender Way

Santa Clara, CA 95054

for SALES:

800-345-7015 or 408-727-6116

fax: 408-

330-1748

www.idt.com

for Tech Support:

email: atmhelp@idt.com

phone: 408-

492-8208

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

Ordering Information

Ordering Information

Ordering Information

Ordering Information

Revision History

Revision History

Revision History

Revision History

9/8/95:

Initial Draft

9/13/95:

Revision

9/21/95:

Revision

10/30/05:

Corrected Typographical Errors

11/13/95:

Corrected Vcc and GND nomenclature and Figure 10

1/9/96:

Made Preliminary, added PCB layouts and package mechanical diagram

5/6/96:

Changed the capacitor values see Analog Component Values on page 22 (C2 and C3) and the pin for C3 on the diagram (page 22). Exchanged

the Tx and Rx filters on PC board layout for ATM user.

7/31/96:

Corrected Board layouts and timing specs, added multi-PHY waveforms.

9/16/96:

Corrected Fig. 6, added note for utopia speed, corrected Counter Reg. Read Select table to write only, added Input and Output line signal tables.

11/26/96:

Added definition for Good Signal bit in the Interrupt Register (address 0x01) and information regarding cable disconnect and link establishment,

component values changed on reference design to accommodate standard values.

2/23/98:

Addition of Industrial temperature grade. Additional timing parameters for RESET and UTOPIA bus. Deleted references to 77101. Added specifi-

cation relating AVcc to Vcc. UPLO description improved. Additions to transmit and receive text.

12/21/98:

Add statements on standards compliance. Add timing parameters to utility bus read and write cycles (Figures 19 and 20). Correction to reset tim-

ing waveform (Figure 18). Revision to recommended 77105/magnetics interface (Figure 21) and component values. Add list of compatible mag-

netics. Corrections to Figures 7 and 17. Return loss information removed. Eliminate distinction between analog and digital power and ground pins.

51.2 Mbps operation added. TOSC specifications added.

6/21/00:

Updated to new format. Removed 51.2 Mbps operation. Remove more references to analog Vcc and ground. Misc. typos corrected.

9/11/00

Removed references to 77V101. Removed section Magnetics Modules for 51 Mbps.

Package

IDT

NNNNN

Device Type

A

Power

NNN

Speed

A

A

Process/

Temp. Range

Blank

25

Speed in Mb/s

77105

25Mb/s ATM PHY Transmission

Convergence (TC) and PMD

Sublayers

Commercial (0°C to +70°C)

3445 drw 27

L

TF

64-Pin STQFP (PP64-1)

see drawing PSC-4046

I

Industrial (-40°C to +85°C)