SCAN25100TYA

SCAN25100 2457.6, 1228.8, and 614.4 Mbps CPRI SerDes PRELIMINARY September 2006 SCAN25100 2457.6, 1228.8, and 614.4 Mbps CPRI SerDes with Auto RE Sync and Precision Delay Calibration Measurement General Description The SCAN25100 is a 2457.6, 1228.8, and 614.4 Mbps serializer/deseralizer (SerDes) for high-speed bidirectional serial data transmission over FR-4 printed circuit board backplanes, balanced cables, and optical fiber. The SCAN25100 integrates precision delay calibration measurement (DCM) circuitry that measures link delay components to better than ± 800 ps accuracy. The SCAN25100 features independent transmit and receive PLLs, on-chip oscillator, and intelligent clock management circuitry to automatically perform remote radio head synchronization and reduce the cost and complexity of external clock networks. The SCAN25100 is programmable though an MDIO interface as well as through pins, featuring configurable transmitter de-emphasis, receiver equalization, speed rate selection, internal pattern generation/verification, and loop back modes. In addition to at-speed BIST, the SCAN25100 includes IEEE 1149.1 and 1149.6 testability. n DCM also measures chip and other delays to ≤ ± 1200 ps accuracy n Deterministic chip latency n Automatic receiver lock and RE synchronization without reference clock or external crystal n Independent transmit and receive PLLs for seamless RE synchronization n Low noise recovered clock output n Requires no jitter cleaning in single-hop application n > 8 kV ESD on the CML IO, > 7 kV on all other pins, > 2 kV CDM n Hot plug protection n LOS, LOF, 8b/10b line code violation, comma, and receiver PLL lock reporting n Programmable hyperframe length and start of hyperframe character n Programmable transmit de-emphasis and receive equalization with on-chip termination n Advanced testability features — IEEE 1149.1 and 1149.6 — At-speed BIST pattern generator/verifier — Multiple loopback modes n 1.8V or 3.3V compatible parallel bus interface n 100-pin TQFP package with exposed dap n Industrial –40 to +85˚ C temperature range Features n Exceeds LV and HV CPRI voltage and jitter requirements n 2457.6, 1228.8, and 614.4 Mbps operation n Integrated delay calibration measurement (DCM) directly measures T14 and Toffset delays to ≤ ± 800 ps Block Diagram 20183442 © 2006 National Semiconductor Corporation DS201834 www.national.com SCAN25100 Pin Diagram SCAN25100 20183402 (Top View) 100–Pin TQFP with Exposed Ground Pad Order Number SCAN25100TYA See NS Number VXF100B www.national.com 2 SCAN25100 2457.6, 1228.8, and 614.4 Mbps CPRI SerDes Physical Dimensions inches (millimeters) unless otherwise noted 100-Pin TQFP with Exposed Ground Pad (Top View) Order Number SCAN25100TYA NS Package Number VXF100B See www.national.com/quality/marking_conventions.html for additional part marking information National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information visit us at www.national.com. LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. BANNED SUBSTANCE COMPLIANCE National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C2) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/quality/green. Lead free products are RoHS compliant. National Semiconductor Americas Customer Support Center Email: new.feedback@nsc.com Tel: 1-800-272-9959 www.national.com National Semiconductor Europe Customer Support Center Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Support Center Email: ap.support@nsc.com National Semiconductor Japan Customer Support Center Fax: 81-3-5639-7507 Email: jpn.feedback@nsc.com Tel: 81-3-5639-7560 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.