ADS1298R: Question about time settle in acquisition.

January 18, 2018, 5:13 pm

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Part Number:ADS1298R

Hello. I'm working in a project with the ADS1298. I need some help to understand something about the data rate and time settle:

If im trying to have a 500 SPS (24+24*8 bits ready to be taken by spi, every 2ms), so DRDY should toggle to 0 every 2ms...when I see the t settle table

in the datasheet ( p. 51) it shows a time settle (when DRDY should toggle to 0 to indicate new data) of 18440/2048000 = 9ms...that is a data rate of 111 SPS

So thats my confusion...which is the correct data rate (I understand data rate as have the 24+24*8 bits ready)? 500 sps or 111 sps?

Thank you. 

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SN65DSI86: SN65DSI86 Circuit and Register Review

January 18, 2018, 5:14 pm

≫ Next: MSP430FR2433: Pull-up for RST Line

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Part Number:SN65DSI86

Dear TI Team.

I am designing SN65DSI86. We would like to get a review of the circuit and Register settings to identify the problem.

- Video format : RGB4:4:4

- APU/GPU maximum DSI Clock frequency is 1GHz

- Using the eDP panel

- SN65DSI86 Normal operation when Test pattern is executed.

- Screen is not displayed when Mipi signal is applied

Register dump

00 | 36 38 49 53 44 20 20 20 02 00 86 00 00 01 00 00
10 | 20 00 41 00 00 00 00 00 00 00 00 00 00 00 00 00
20 | 80 07 00 00 38 04 00 00 00 00 00 00 20 00 00 00
30 | 05 80 00 00 50 00 17 00 30 00 03 00 00 00 00 00
40 | 01 00 00 00 80 00 20 08 57 04 70 00 1c 00 20 00
50 | 05 80 80 07 38 04 00 00 40 e4 0d 01 10 00 30 00
60 | a0 60 a4 00 00 01 00 00 00 00 00 00 00 00 00 00
70 | 00 00 00 00 00 01 02 01 80 81 00 00 00 00 00 00
80 | 00 00 00 00 00 00 00 00 00 1f 7c f0 c1 07 1f 7c
90 | f0 c1 07 24 81 00 01 04 01 00 00 00 00 00 00 00
a0 | 01 ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00
b0 | 04 78 ac ac 08 6c 9c 9c 0c 5c 5c 5c 0c 0c 0c 0c
c0 | 3f 3f 0f 00 00 00 00 00 00 00 00 00 00 00 00 00
d0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0 | 00 80 00 00 01 02 00 00 01 00 00 00 00 00 00 00

I would like to check the register setting and circuit diagram.

Thanks.

MSP430FR2433: Pull-up for RST Line

January 18, 2018, 5:17 pm

≫ Next: DRV2605L: FB_STS 1: Feedback controller has timed out

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Part Number:MSP430FR2433

Team, aside from MSP-FET compatibility, is there any issue for using 150k pull-up on the RST line instead of the recommended 47k? Would the capacitor to ground need to change if such a resistor value is used?  I am referring to R1 and C1 of page 19 of the HW UG. 

DRV2605L: FB_STS 1: Feedback controller has timed out

January 18, 2018, 5:30 pm

≫ Next: MSP430FR2433: Open-Drain I/O Configuration

≪ Previous: MSP430FR2433: Pull-up for RST Line

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Part Number:DRV2605L

After 'playing' a waveform, my status register shows FB_STS has become 1, which apparently means Feedback controller has timed out.
I cant find any other information on this here or in the datasheet. Is this normal or indicative of a problem?

Thanks,
Jacob

MSP430FR2433: Open-Drain I/O Configuration

January 18, 2018, 5:31 pm

≫ Next: LM5050MK-1EVAL: Can I use this same design, but without the 100 Ohms between pin 1 and 6?

≪ Previous: DRV2605L: FB_STS 1: Feedback controller has timed out

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Part Number:MSP430FR2433

Hi Team,

Is there any way to implement an open-drain I/O on the MSP?

Is it as simple as toggling between Hi-Z and Output Low?

Best Regards,

Michael

LM5050MK-1EVAL: Can I use this same design, but without the 100 Ohms between pin 1 and 6?

January 18, 2018, 5:33 pm

≫ Next: BQ25601: Thermistor hookup and program

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Part Number:LM5050MK-1EVAL

Hello,

I was looking at the EVM design for this board and was wondering if the 100 Ohm was absolutely necessary?

Can I just do a short between the two pins? If not, up to what voltage level is it necessary to have a resistor there?

Thank you,
Louie

BQ25601: Thermistor hookup and program

January 18, 2018, 5:35 pm

≫ Next: BQ25601: Limiting battery inrush current - Softstart

≪ Previous: LM5050MK-1EVAL: Can I use this same design, but without the 100 Ohms between pin 1 and 6?

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Part Number:BQ25601

The datasheet is vague hookup of thermistor and resistors for programming and how to program.
Can you provide some details on what resistors/thermistors to hook up and how to choose their"
values? Below picture for reference.

BQ25601: Limiting battery inrush current - Softstart

January 18, 2018, 5:39 pm

≫ Next: RTOS/CC2640R2F: CC2640R2F can't not connected and discovery by some mobile

≪ Previous: BQ25601: Thermistor hookup and program

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Part Number:BQ25601

Is there any mitigation for limit inrush current when connecting a battery or when turning on the BATFET
with a battery already connected? My VSYS is bypassed with about 13-15uF of input capacitance to
my PMIC but I need to limit any inrush currents to less than 3A.

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RTOS/CC2640R2F: CC2640R2F can't not connected and discovery by some mobile

January 18, 2018, 5:56 pm

≫ Next: TPS74801: Question about drop voltage

≪ Previous: BQ25601: Limiting battery inrush current - Softstart

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Part Number:CC2640R2F

Tool/software:TI-RTOS

Dear all,

I'm using CC2640R2F to interface with mobile app. I have a trouble with Samsung Note 4 (Android 6.0.1). It's can't connected and discovery by mobile app such as: NRF Connect or BLE scanner while these another phones is ok such as: Note 3, Iphone 6/6S...I'm using both SDK simplelink_cc2640r2_sdk_1_40_00_45 and simplelink_cc2640r2_sdk_1_50_00_58, the result are same.

I also see on TI forum guide disable DLE (LE Data Length Extension) But it seem not solve this problem. I also test interface Samsung note 4 with NRF51822 chip, it's is ok. My wonder is this TI BLE SDK issue ?  Please give recommence.

thanks so mcuh,

Tuyen

TPS74801: Question about drop voltage

January 18, 2018, 6:00 pm

≫ Next: LMK04906: About phase noise and jitter spec

≪ Previous: RTOS/CC2640R2F: CC2640R2F can't not connected and discovery by some mobile

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Part Number:TPS74801

Hello,

My customer wants to set "Vo: 1 V, Io: 0.959 A" at "Vin: 1.5 V, Vbias: 3.3 V, Ta: 0 to 60 ° C." using TPS74801.
In order to know the lower limit value of Vin, please tell me the value of "Vdo" under the above conditions.
I would appreciate it if you can get graphs of (Vbias - Vo) versus Vdo when Io is 1A.

Thank you.

LMK04906: About phase noise and jitter spec

January 18, 2018, 6:09 pm

≫ Next: TPS54335A: current mode modeling parameters

≪ Previous: TPS74801: Question about drop voltage

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Part Number:LMK04906

Hi all.

I have two question about phase noise and jitter of LMK04906.
I would like to the following spec.
-L(f)clkout phase noise(offset=1kHz~10MHz) @ fclkout= 312MHz and 156MHz
-RMS jitter @ fclkout=156MHz

Sorry, I would like to get this data as soon as possible .
Please help me.

Best Regards,
Sho

TPS54335A: current mode modeling parameters

January 18, 2018, 6:19 pm

≫ Next: TLE4275-Q1: The vcc(5v) for download, we found the vcc fall when download which causes the downloading of the program to fail.

≪ Previous: LMK04906: About phase noise and jitter spec

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Part Number:TPS54335A

My customer wants to model the TPS54335A  using his own peak current mode model. To do this he needs certain controller gain parameters, in particular the current sense gain and slope compensation.  The data sheet does provide the error amplifier gain and response components.

The data sheet indicates includes the power stage gain of 8A/V, but not sure how to fit this into his model. Is this the inverse of the current sense gain (0.125 ohms)?  And how can he model the slope compensation being added to the sensed current? 

TLE4275-Q1: The vcc(5v) for download, we found the vcc fall when download which causes the downloading of the program to fail.

January 18, 2018, 6:20 pm

≫ Next: CC2640R2F: Primary service UUID 0xFFF0-0xFFF5

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Part Number:TLE4275-Q1

Dear sir,

         VCC=5V  BATTERY=0V, The SCH is as below

Question: The vcc(5v) for download, we found the vcc fall when download which causes the downloading of the program to fail. We had replaced TLE4275 to Infineon‘TLE4275 and ON'TLE4275 with P2P，the download can work normally. could you help tell me the difference between TI’TLE4275 and Infineon‘TLE4275. or give us some advices to slove it

CC2640R2F: Primary service UUID 0xFFF0-0xFFF5

January 18, 2018, 6:23 pm

≫ Next: TPS54428: For VIN=5V, Vout=3.3V

≪ Previous: TLE4275-Q1: The vcc(5v) for download, we found the vcc fall when download which causes the downloading of the program to fail.

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Part Number:CC2640R2F

Hi,

I am using simpleBlePeripheral exmaple on CC2640R2F.Can we use the primary service UUID 0xFFF0-0xFFF5 on our production?

regards

TPS54428: For VIN=5V, Vout=3.3V

January 18, 2018, 6:29 pm

≫ Next: CC2650STK: Package/Software used to develop Android App for CC2650 SensorTag

≪ Previous: CC2640R2F: Primary service UUID 0xFFF0-0xFFF5

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Part Number:TPS54428

Hi team,

 

I'm using webench simulation of TPS54428, but it's not avaible to simulate it from IOUT=2.2A (VIN=5V/ Vout=3.3V) in the webench.

So, TPS54428 can't support the following conditions?

 

VIN = 5V

VOUT=2.5V / IOUT = 2.5A (average)

 

Thanks,

Sam Lee

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CC2650STK: Package/Software used to develop Android App for CC2650 SensorTag

January 18, 2018, 6:49 pm

≫ Next: CC2560: Datasheet to show CC2560BYFVR specs.

≪ Previous: TPS54428: For VIN=5V, Vout=3.3V

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Part Number:CC2650STK

Greetings,

I was trying to get some further details on the development of the Android Application for the CC2650 SensorTag.

I have cloned the latest distribution over on GitHub, and have looked through the various directories/files.

Questions:

- Is there any sort of 'Readme' which describes the files contained in the git ? Some of the file names are self-explanatory, as is some of the content. However, for others, not so much. If there is not a 'Readme', this would be VERY useful.

- What software was used to write the Android App for the SensorTag, i.e., was *all* of the code hand-written, or was a template used, i.e., in 'Android Studio', to auto-generate some of the code ?

Regards,

J.

CC2560: Datasheet to show CC2560BYFVR specs.

January 18, 2018, 6:55 pm

≫ Next: TIDM-1000: I want to use the design to 5KW.

≪ Previous: CC2650STK: Package/Software used to develop Android App for CC2650 SensorTag

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Part Number:CC2560

Hi Ti,

Kindly please help to share datasheet stated on CC2560BYFVR part.

TIDM-1000: I want to use the design to 5KW.

January 18, 2018, 7:00 pm

≫ Next: CCS/TMS320F28377D: What is ADC process to get the sampled values ready for control logic part?

≪ Previous: CC2560: Datasheet to show CC2560BYFVR specs.

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Part Number:TIDM-1000

Hi sir:

 I want to use the design to 5KW.do have any advise?

CCS/TMS320F28377D: What is ADC process to get the sampled values ready for control logic part?

January 18, 2018, 7:04 pm

≫ Next: CCS/TMS320F28035: Failing to write to 0x3F7FF6 (boot to flash entry point) via flash kernel or Code Composer/JTAG

≪ Previous: TIDM-1000: I want to use the design to 5KW.

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Part Number:TMS320F28377D

Tool/software: Code Composer Studio

Hi,

Could anyone help me with this? I really read the ADC reference a lot  but still I don't really understand how the ADC value is ready to use and don't know how to check to see if it is right. Could you please correct what I understand 1,2,3?

ePWM2SOCA is trigger for A0, A1, B0 on zero match

ePWM3SOCA is trigger for B4 on period match

Both ePWMs are up-down mode and both are syn. with ePWM1.

1. ePWM2SOCA and ePWM3SOCA arrive at the same time.

2. A0+B0->A1->B4 sequentially are sampled or actually A0-A15 and B0-B15 all are sequentially sampled?  Is there a need to wait for the time base counter of ePWM3 to reach to the period then get B4 sampled?

3. Set EOC4 as trigger for interrupt ADCB1 and values from A0, B0, A1, B4 are transferred to the result regs. Or do I need to set two interrupts ADCA1 and ADCB1 because I use two trigger sources?

CCS/TMS320F28035: Failing to write to 0x3F7FF6 (boot to flash entry point) via flash kernel or Code Composer/JTAG

January 18, 2018, 7:04 pm

≫ Next: TAS2555: Need to export .h file from Pure Path Console 3 after Smart Amp programming with Learning Board 2

≪ Previous: CCS/TMS320F28377D: What is ADC process to get the sampled values ready for control logic part?

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Part Number:TMS320F28035

Tool/software: Code Composer Studio

I am having a strange issue that I just started noticing.  I have modified the f28035 flash kernel to flash an application over CAN.  The flash kernel sits in sector A of flash, and the application goes in sectors B-H.  I am usually able to flash the application via the flash kernel just fine, but every once in a while it fails when trying to the write to 0x3F7FF6, the boot to flash entry point.  Whenever I see this failure in my flash kernel, I try to flash it via Code Composer/JTAG and it fails then too.  It erases the flash sectors just fine, it even writes to every flash location (basically the entire app) until it gets to 0x3F7FF6 at the end and it fails to write to that spot.  I can program the last application that wrote to 0x3F7FF6 just fine, but I can't program a different application.  It's like the first application to write to that location locks it until I completely erase all flash sectors and then everything works again....for a while.  Is there some weird permission issue when writing to 0x3F7FF6 or something?