Hi: I'm trying to establish simple communications between the bq20z95evm board and my PIC controller board but cannot get any response to the device address byte. According to smbus 1.1 the device should always ACK it's own address... I have not been successful. The evm board connections follow:
TB1.4P = 10V
TB1.1N = Gnd
All other TB1 inputs float
Sys Pres = Gnd
Pack+ = 10V
SMB clock, data, ground connected to associated PIC IO pins
The SMB single byte address is sending 0x16 + write for pattern 0010110 0 then always receive ACK as high.
Is there some other initialization the chip needs prior to SMBus communication?? I have clock and data lines pulled high and voltage levels are solid.
Thx for any help or suggestions.
