i'm using lpc2378(arm7) to programming ucd90160 over i2c(pmbus),
The PMBus PMBus_clk, data, is ok,alert: is high, cntrl is high, address is 0x68(52d),when sending slave address,always get nack.
how to sovle this problem?
how to check if the ucd 90160 is working or not?