VOICE ECHO CANCELLATION PRODUCT OVERVIEW Zarlink portfolio of highly integrated VECs (voice echo cancellers) that optimize call quality in a wide range of low- to mid-density wireless and telephony equipment. Zarlink’s off-the-shelf VECs support from 2 to 288 voice channels while cancelling echo tails of 64 milliseconds (ms) or 128 ms. Zarlink VECs help ensure carrier-grade voice connections and improve subjective voice quality by removing echoes, clicks and hisses caused by user environment, network conditions, and round-trip delays. The devices use an efficient architecture that reduces board space and development resource requirements. Please see the back page selector guide for details on the complete Zarlink VEC portfolio. $IBOOFM&DIP$BODFMMFS 4JHOBM 1$.*OQVU 4USFBN 4JHOBM 8JUI&DIP &DIP 3FNPWBM "EBQUJWF 'JMUFS 3FGFSFODF 1$.0VUQVU 4USFBN 4JHOBM8JUI 3FTJEVBM&DIP /PO-JOFBS 1SPDFTTPS 4JHOBM 8JUIPVU&DIP 4JHOBM 1$.0VUQVU 4USFBN (%FUFDUPST %JTBCMFUPOF/BSSPX#BOE %PVCMF5BML 1BUI$IBOHF*OTUBCJMJUZ 3FGFSFODF 1$.*OQVU 4USFBN Adjustable signal gain/loss improves ERL performance and flexibility for system gains Each ECG offers parallel DSP processing without resource sharing limitations Compatible pin-outs simplify system upgrades Standards Compliant $IBOOFMTBUNTPS$IBOOFMBUNTPS#JEJSFDUJPOBM %% Fully programmable convergence speeds per-channel improves performance during double-talk Low-power operation (4.6 mW per channel) with independent powerdown mode 3FGFSFODF4JHOBM "" Fast re-convergence on echo path changes Configurable to allow simultaneous operation of dual channel ECG (echo canceller group) at 64 ms, bidirectional 64 ms or 128 ms XJUI"EWBODFE /PJTF.BUDIJOH .JDSPQSPDFTTPS"DDFTTBOE$POUSPM Full band convergence allows multiple echo reflection cancellation Flexibility and Ease-of-Use &$( &$(O $IBOOFM&DIP$BODFMMFS(SPVQ NLP with adaptive suppression threshold and spectrally matched comfort noise injection removes residual echo and minimizes switching effects Protection against narrowband signal divergence in high echo environments or in the presence of DTMF or other tones ZL38065 Voice Echo Canceller ;-4JNQMJmFE#MPDL%JBHSBN &$( ZL38065 VEC—Highest Voice Quality with Advanced Noise Matching 5FTU1PSU ITU-T G.168 (2000), G.168 (2002) and ITU-T G.165 Fax/modem G.164 2100 Hz Tone Disable Streamlines AT&T equipment certifications Applications Customer Support VoIP gateways Converged PBXs Wireless local loop base stations & controllers (PHS/DECT) Voice/telephony gateways Integrated access devices Media gateways Zarlink VECs are supported by Zarlink’s network of in-house field application and design engineers. Evaluation boards with full design and applications documentation are available. VOICE ECHO CANCELLATION MT9122 4(2) 2(1) 64(128) 64(128) 64(128) • Part # MT9123 4(2) 64(128) • ZL50233 8(4) 64(128) • ZL50234 16(8) 64(128) • ZL50235 32(16) 64(128) • ZL50232 32(16) 64(128) • ZL38065 128(64) • MT93L04 256(128) 64(128) • ZL50211 256(128) 64(128) G.164/G165 compliant • ZL38070 288(144) 64(128) Amount of echo cancellation in ms • ZL50212 # of Channels • • • Per-channel echo canceller control • Narrow band signal protection • • • • • • • • • • • Double-talk compensation • • • • • • • • • G.168 (2000) compliant • • • • • • • • • • • • • • • • • • • • • • • • • • G.168 (1997) compliant Advanced background noise insertion • • • • • • • • • • • • • • • Controller-less mode • 2 Mbps ST-BUS & CGI interface • Independent power down mode • • • • Audio level adjusters at all signal ports • • • • • • • • • • • • Advanced noise matching Features Advanced near-end echo suppression • • • • • • • • • • • • • • • • • • • • • • • • Programmable convergence speed • • • • • • • 1.2 0.6 0.15 0.15 0.088 0.056 0.04 • All channel active power dissipation (Wtyp.) • • 1.2 0.35 • 1.35 0.25 • IEEE-1149.1 (JTAG) port 5V Packaging 100 pin LQFP, 208 ball LBGA 28 pin PLCC, PDIP • 28 pin PLCC, PDIP • 100 pin LQFP, 208 ball LBGA 100 pin LQFP, 208 ball LBGA • • • 365 ball BGA 100 pin LQFP, 208 ball LBGA • 535 ball BGA • • • 535 ball BGA 100 pin LQFP, 208 ball LBGA • 535 ball BGA • • 1.8 V core • • • • • • 3.3 V with tolerent I/O Information relating to products and services furnished herein by Zarlink Semiconductor Inc. or its subsidiaries is believed to be reliable. The products, their specifications, services and other information appearing in this publication are subject to change by Zarlink without notice. ZARLINK, ZL, ZLE and the Zarlink logo are trademarks of Zarlink Semiconductor Inc. AdvancedTCA is a trademark of PCI Industrial Computer Manufacturers Group. © 2006, Zarlink Semiconductor Inc. All Rights Reserved. Publication Number MS5942 www.ZARLINK.com