ZL38065
32 Channel Voice Echo Canceller
Data Sheet
Features
•
Independent multiple channels of echo
cancellation; from 32 channels of 64 ms to 16
channels of 128 ms with the ability to mix
channels at 128 ms or 64 ms in any combination
Fully compliant to ITU-T G.165, G.168 (2000) and
(2002) specifications
Passed all AT&T voice quality tests for carrier
grade echo canceller systems.
Unparalleled in-system tunability
Sub 50 ms initial convergence times under many
typical network conditions
Fast reconvergence on echo path changes
Patented Advanced Non-Linear Processor with
high quality subjective performance
Superior noise matching algorithm
PCM coding,
µ/A-Law
ITU-T G.711 or sign
magnitude
Per channel Fax/Modem G.164 2100 Hz or G.165
2100 Hz phase reversal Tone Disable
Per channel echo canceller parameters control
Transparent data transfer and mute
Protection against narrow band signal divergence
and instability in high echo environments
•
•
•
•
•
•
Ordering Information
ZL38065QCG
ZL38065GDG
ZL38065QCG1
ZL38065GDG2
100
208
100
208
Pin LQFP
Ball LBGA
Pin LQFP*
Ball LBGA**
Trays,
Trays,
Trays,
Trays,
Bake
Bake
Bake
Bake
&
&
&
&
Drypack
Drypack
Drypack
Drypack
January 2006
•
•
•
•
•
•
•
•
•
•
•
•
*Pb Free Matte Tin
**Pb Free Tin/Silver/Copper
-40°C to +85°C
+9 dB to -12 dB level adjusters (3 dB steps) at all
signal ports
Offset nulling of all PCM channels
Independent Power Down mode for each group of
2 channels for power management
Compatible to ST-BUS and GCI interface at
2 Mbps serial PCM
3.3 V pads and 1.8 V Logic core operation with
5 V tolerant inputs
IEEE-1149.1 (JTAG) Test Access Port
Applications
•
•
•
Voice over IP network gateways
Voice over ATM, Frame Relay
T1/E1/J1 multichannel echo cancellation
V
DD1 (3.3V)
V
SS
V
DD2 (1.8 V)
ODE
Echo Canceller Pool
Rin
Sin
MCLK
Fsel
PLL
Serial
to
Parallel
Group 0
ECA/ECB
Group 1
ECA/ECB
Group 2
ECA/ECB
Group 3
ECA/ECB
Parallel
to
Serial
Rout
Sout
Group 4
ECA/ECB
Group 5
ECA/ECB
Group 6
ECA/ECB
Group 7
ECA/ECB
Group 8
ECA/ECB
Group 9
ECA/ECB
Group 10
ECA/ECB
Group 11
ECA/ECB
Group 12
ECA/ECB
C4i
F0i
Timing
Unit
Group 13
ECA/ECB
Group 14
ECA/ECB
Group 15
ECA/ECB
Note:
Refer to Figure 4
for Echo Canceller
block diagram
IC0
RESET
Microprocessor Interface
Test Port
DS CS R/W A12-A0 DTA
D7-D0
IRQ TMS TDI TDO TCK TRST
Figure 1 - ZL38065 Device Overview
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2004-2006, Zarlink Semiconductor Inc. All Rights Reserved.
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
