ZL50234
Data Sheet
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Wireless base stations
Echo Canceller pools
DCME, satellite and multiplexer system
Description
The ZL50234 Voice Echo Canceller implements a cost effective solution for telephony voice-band echo cancellation
conforming to ITU-T G.168 requirements. The ZL50234 architecture contains four groups of two echo cancellers
(ECA and ECB) which can be configured to provide 2 channels of 64 milliseconds or 1 channel of 128 milliseconds
echo cancellation. This provides 8 channels of 64 milliseconds to 4 channels of 128 milliseconds echo cancellation
or any combination of the two configurations. The ZL50234 supports ITU-T G.165 and G.164 tone disable
requirements.
TMS
TDI
TDO
TCK
VSS
NC
NC
NC
IC0
IC0
TRSTB
IC0
IC0
VSS
RESETB
IRQB
DS
IC0
IC0
IC0
ZL50234/QC
CS
IC0
R/W
VDD2
C4ib
Foib
Rin
Sin
Rout
Sout
(100 pin LQFP)
DTA
VDD2
D0
D1
D2
VSS
D3
ODE
VSS
NC
NC
NC
NC
NC
D4
D5
D6
D7
V
DD2 = 1.8 V
VDD1 = 3.3 V
NC
NC
Figure 2 - 100 Pin LQFP
2
Zarlink Semiconductor Inc.
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
