zl50235 Zarlink Semiconductor, zl50235 Datasheet - Page 2

• Manufacturer Part Number: zl50235
• Description: 16 Channel Voice Echo Canceller
• Manufacturer: Zarlink Semiconductor

Description
The ZL50235 Voice Echo Canceller implements a cost effective solution for telephony voice-band echo cancellation
conforming to ITU-T G.168 requirements. The ZL50235 architecture contains eight groups of two echo cancellers
(ECA and ECB) which can be configured to provide two channels of 64 milliseconds or one channel of 128
milliseconds echo cancellation. This provides 16 channels of 64 milliseconds to 8 channels of 128 milliseconds
echo cancellation or any combination of the two configurations. The ZL50235 supports ITU-T G.165 and G.164 tone
disable requirements.
RESETB
TRSTB
IRQB
VDD2
TMS
TDO
TCK
VSS
VSS
R/W
DTA
TDI
IC0
DS
NC
NC
CS
D0
D1
D2
D3
D4
D5
D6
D7
V
DD1
= 3.3 V
(100 pin LQFP)
Figure 2 - 100 Pin LQFP
Zarlink Semiconductor Inc.
ZL50235QC
ZL50235
2
V
DD2
= 1.8 V
Data Sheet
NC
NC
NC
IC0
IC0
IC0
VSS
IC0
IC0
IC0
IC0
VDD2
C4ib
Foib
Rin
Sin
Rout
Sout
ODE
VSS
NC
NC
NC
NC
NC