AnsweredAssumed Answered

problem with ad7656

Question asked by zhongxpb on Jul 27, 2011
Latest reply on Aug 11, 2011 by ClaireL

hi:
i'm using ad7656,
config is following:
1、internal ref
2、hardware mode
3、serial port
4、vdd = 5V
5、ser/par,wr pin connect together using resistor 4.7k to vdd
6、h/s,db15,db14,db13,db12,db11 pin connect together using resistor 4.7k to gnd
7、db7,db5,db4,db3,db11 pin connect together using resistor 4.7k to gnd
8、db3,db2,db1 pin connect together using resistor 4.7k to vdd
9、/stby using resistor 4.7k to vdd
10、reset connect to adm810's rst
problem
it's a very little probality event!!!
when power up , i give connvert to all ad chip
but some chip can not generate busy signal.
how does busy works?
under what condition , busy signal can not
generate rising and falling

Outcomes