Power comsumption chart for C6655

Udayakumar Raju

Prodigy 130 points

Other Parts Discussed in Thread: TMS320C6655

Is there any tool/spreadsheet to calculate module wise power consumption for C6655?

Regards,

Udaya

over 13 years ago

0 Chad Courtney over 13 years ago

TI__Mastermind 30825 points

Not yet, we are targeting the end of August to have the Power Consumption Spreadsheet available for the C665x devices. We are in the process of performing power characterization currently.

Best Regards,

Chad

0 Udayakumar Raju over 13 years ago in reply to Chad Courtney

Prodigy 130 points

Hi Chad,

Thanks your reply.

We are in the stage of determining and designing power supply where C6655 &its interfaces are one of the modules.

I could not find current consumption detail of each power rails in the datasheet.

Hence, it would be great if you could tell us maximum power consumption of each power rail of C6655.

Regards,

Udaya

0 Chad Courtney over 13 years ago in reply to Udayakumar Raju

TI__Mastermind 30825 points

The table below is what we used to build our EVM boards. These are worst case estimates of C6657 devices with the device operating at 1GHz and 85C. Note that these are preliminary estimates as power characterization of the Gauss silicon has not been completed.

Name	Nominal Voltage	Maximum Current	Supply Description
CVDD	0.8-1.1V	2.5A	SmartReflex Core Supply
CVDD1	1.0V	1.0A	Core Supply Voltage for Memory Array
DVDD18	1.8V	50mA	LVCMOS IO Supply
DVDD15	1.5V	350mA	DDR3 IO Supply

The table below lists the small auxiliary supplies. These values will not be exceeded under any use condition.

Name	Nominal Voltage	Maximum Current	Supply Description
VREFSSTL	0.75V	0.1mA	DDR3 Reference Voltage
VDDT1	1.0V	65mA	HyperLink SerDes Termination Supply
VDDT2	1.0V	65mA	SGMII, SRIO and PCIe SerDes Termination Supply
VDDR1	1.5V	60mA	HyperLink SerDes Regulator Supply
VDDR2	1.5V	60mA	PCIe SerDes Regulator Supply
VDDR3	1.5V	60mA	SGMII SerDes Regulator Supply
VDDR4	1.5V	60mA	SRIO SerDes Regulator Supply
AVDDA1	1.8V	30mA	Main PLL Supply
AVDDA2	1.8V	30mA	DDR3 PLL Supply

For the C6655, you should be able to save that CVDD current down to 2.0A and the CVDD1 down to 0.75A if you need to go any lower. But these numbers should alow for an initial design assuming an 85C max temp.

Best Regards,
Chad

0 Udayakumar Raju over 13 years ago in reply to Chad Courtney

Prodigy 130 points

Hi Chad

Thanks a lot for your express reply.

Regards,

Udaya

0 UNA over 13 years ago in reply to Udayakumar Raju

Mastermind 7980 points

Hi Chad

I want the Power Consumption Spreadsheet for C6655 device.

In order to design advanced power supply .

Could you tell me your release schedule ?

Best Regards,

Chi

0 Chad Courtney over 13 years ago in reply to UNA

TI__Mastermind 30825 points

Chi,

We currently are trying to get this out in the November time-frame. I apologize for the delay.

Best Regards,

Chad

0 Udayakumar Raju over 13 years ago in reply to Chad Courtney

Prodigy 130 points

Would like to know whether Power consumption spread sheet released for C6655?

Regards,

Udaya

0 Chad Courtney over 13 years ago in reply to Udayakumar Raju

TI__Mastermind 30825 points

Not yet, it will be in the Product Page TMS320C6655 when it's released.

Best Regards,
Chad

0 SNBANIK over 13 years ago in reply to Chad Courtney

Intellectual 645 points

Is the power consumption summary for c6655 available yet? I couldn't find it in the product page.

I am also interested in power consumption ratio of c6657 versus c6455 and c6655 versus c6455

(@ 1GHz)

Regards,

Somnath Banik

0 Chad Courtney over 13 years ago in reply to SNBANIK

TI__Mastermind 30825 points

We're working to get it out next week. I apologize for the delay.

Best Regards,
Chad

Processors

Processors forum

Power comsumption chart for C6655