¡ Semiconductor
MSM7617 Evaluation Board
1
¡ Semiconductor
MSM7617 Evaluation Board
2-Channel Echo Canceller LSI
GENERAL DESCRIPTION
This evaluation board is used to evaluate the characteristics of the
MSM7617 (64-pin QFP), a 2-channel echo canceller LSI device.
Separate channels are provided for both analog and digital (PCM)
input/output interface, so this evaluation board will work with all I/O
modes of the MSM7617 and a wide variety of evaluation circuits.
BLOCK DIAGRAM
RIN1
IOM1
IOM0
ECDM2
ECDM1
ECDM0
ECM
PWDWN
ROUT1
SIN1
SOUT1
JP1
SYNC1
SCK
SYNC(8 K)
SCK(128 K)
SYNC(8 K)
RST1
SCKO
SYNCO
RIN2
ROUT2
SIN2
SOUT2
SYNC2
CLKIN
RST2
AIN1
2ch PCM CODEC
MSM7617
2ch PCM CODEC
AOUT1
AIN2
AOUT2
RIN1
ROUT1
SIN1
SOUT1
DOUT1
DIN1
DOUT2
DIN2
SYNC
SCK
A/
m
JP2
JP12
JP9
JP19
JP20
AIN1
AOUT1
AIN2
AOUT2
RIN2
ROUT2
SIN2
SOUT2
DOUT1
DIN1
DOUT2
DIN2
SYNC
SCK
A/
m
JP4
JP3
JP11
JP10
RPCMI1
RPCMO1
SPCMI1
SPCMO1
EXT.SYNC1
EXT.SCK
SYNC, SCK
Generator
RST SW1
D-V
DD
D-GND
A-V
DD
A-GND
RPCMI2
RPCMO2
SPCMI2
SPCMO2
EXT.SYNC2
RST SW1
Main CLOCK
Generator
A/
m
Common
Mode SW
NLP2
HCL2
ADP2
HD2
ATT2
SG21
SG20
SA21
SA20
RGC21
RGC20
ch2
Mode SW
NLP1
HCL1
ADP1
HD1
ATT1
SG11
SG10
SA11
SA10
RGC11
RGC10
ch1
Mode SW
SYNC1OUT
SCKOUT
SYNC2OUT