TPS65070 CON_CTRL1 Parameter Setting

RogerZ

Other Parts Discussed in Thread: TPS65070, OMAP-L138

Hi, All

How can I write setting parameter into TPS65070, in I2C bus TPS65070 is a slave who is the master DSP,ARM or MCU?? For example ARM is the master, But in power-on stage ARM has not booted. Anybody know how can I do it??

over 14 years ago

0 RogerZ over 14 years ago

Intellectual 295 points

I have discussed with some friends about this question, and we think we need a other MCU to communicate with TPS65070, this MCU storged TPS65070 setting parameter and when system power on, first MCU init and configer TPS65070,second TPS65070 power on, Third Application Processor boot. In this way we need add other MCU to be a power management IC, It seems not a good idea for E-BOM cost control.

Anybody has good suggestion??

0 Daniel Acevedo over 14 years ago in reply to RogerZ

TI__Genius 17240 points

What are you trying to achieve by programming through I2C? If start-up sequencing, I recommend using one of the TPS6507xx variants which provide preprogrammed internal sequencing to power up the processor. Once the processor is powered up, it can issue I2C commands to the TPS6507xx.

0 RogerZ over 14 years ago in reply to Daniel Acevedo

Intellectual 295 points

Thanks for you answer!!

0 Daniel Acevedo over 14 years ago in reply to RogerZ

TI__Genius 17240 points

Based on your duplicate post: http://e2e.ti.com/support/dsp/sitara_arm174_microprocessors/f/47/p/96939/341821.aspx#341821

I recommend the TPS65070 which is by default, setup for the OMAP-L138 per table 9 and figures 49 and 50 in the datasheet.

Power management

Power management forum

TPS65070 CON_CTRL1 Parameter Setting