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CCS/DRV10983: turn off fan from remote in TIDA-00386

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Part Number:DRV10983

Tool/software: Code Composer Studio

hello 

i am bldc ceiling fan manufacturer

currently i design my ceiling fan on drv10983

all parameter is work correctly 

i have one problem is i require a turnoff button in remote

currently design only have speed up down and reverse function

i need turn on off function

kindly help me to short out this problem

Himanshu


DS90UB913A-Q1: Can DS90UB913A support 1920 * 1080 30fps camera module?

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Part Number:DS90UB913A-Q1

Hi, E2E members

I would like to check to you if DS90UB913A can support 1920 * 1080 30fps camera module.

Camera module setting is here.
- Bus Width: 8-Bit (YUV)
- Active Picture: 1920x1080
- Total Frame: 2200x1125
- Pixel Clock: 2200*1125*30FPS=74250000Hz=74.25MHz

As you know, DS90UB913A can support 10-bit Payload up to 100 MHz and connect a 8-bit data camera module.

From the data sheet and following E2E.
e2e.ti.com/.../428578

I think DS90UB913 should be ok, but may you please help double check?

Regards,
Nao

TIDA-01352: Customizing the TIDA-01352 for ultrasound scanner design that support B-MODE, CWD and PWD modes only

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Part Number:TIDA-01352

Hi,

Initially, our ultrasound system is planning to support only B-MODE, CWD and PWD mode. Thus we don’t have Elastography mode that requires High voltage +/-150V with huge current requirement around 100A for a fraction of milliseconds.

Our system is having 128 channel and that have sixteen MAX14808 pulsars.
The pulsars MAX14808 have 5 supply rails such as

  1. 3.3V Fixed supply rail
  2. 5.0V Fixed supply rail
  3. -5.0V Fixed supply rail
  4. Programmable Positive supply from 2.5V to 100V range
  5. Programmable Negative supply from -2.5V to -100V range

 

Q1. How to calculate the inductance of CT and push pull transformer, which is chosen as 2mH and 100µH in TIDA-01352?

Q2.Datasheets of the CT [750340744] and push pull transformer [750343547, 750343548] are not available on the net. How can we get more information about the same?

Q3. Why TIDA-01352 have separate HV and LV/MID push pull converter?  Why not the same HV push pull can be made to generate different output voltages from 150V to 2.5V on the basis of the reference voltage from the DAC60004?

Q4. Our ultrasound system is planning to support only B-MODE, CWD and PWD mode. Sixteen MAX14808 pulsars are used to design this 128 channel system. So is it advisable to proceed with a single Push pull power supply whose output can be programmed to get 2.5V to 100V? Similarly, for the negative rail can be made programmed with another Push pull power supply to get -2.5V to -100V.
Thus the use of separate push pull section for HV and MID/LV can be eliminated.

Q5. How to choose the value of output inductor and capacitor in push pull configuration? What is the formula for doing so? From where the equations in section 2.3.2.8.1 and 2.3.2.8.2 on page 15 of the document TIDUCD8 comes from?

Q6. How to choose the value of resistor and capacitor connected to the Compensation (COMP) pin of LM5030?

Q7. The current sensing in TIDA-01352 is performed by using a Current Transformer having 1:100 turn ratio. Is it possible to use shunt resistance for current sensing? For example, 50milli Ohm shunt resistor can be used in the conventional manner such that one end of the shunt resistor is connected to the source of Driving MOSFETs and CS pin, and another terminal to ground?

Q8. What is the value voltage at VCC-P1? Is it Vzener - Vgsmin = 11-1.1 = 9.9V?


Thanks in advance
DEEPAK V
Project Engineer

Linux/BEAGLEBK: How to use Pinmux for AM335 in device tree ?

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Part Number:BEAGLEBK

Tool/software: Linux

I am using Linux SDK with linux kernel 4.9.28. I am trying to change Pinmux reg in device tree but could not find AM33xx_pinmux reg in it. 

which DTS and what section I should look for? 

DRV8802: limit the start-up current

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Part Number:DRV8802

Hello,

Our customer use the DRV8802.

The customer limit the start-up current.

When the current hits the current chopping threshold, the current flow reverse in a moment.

What is this?

I attach the scope shot as below.

(Please visit the site to view this file)

Best Regards,

Naoki Aoyama

TM4C1294NCPDT: Is TM4C1294NCPDT Firmware necessary,Or Not?

CC3200-LAUNCHXL: mqtt_client example : how to debug specific socket error ?

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Part Number:CC3200-LAUNCHXL

Hi,

I am using mqtt_client example from cc3200 sdk  1.3.0  on launch pad.

I have made modification and connected successfully to iot.eclipse.org port 8883 using TLS 1.2.

But when i try to connect  with  private broker it through error (-11) while mqtt connection.I tested that broker with particular certificate file from mqttt.fx client it works fine.

So my query is not what may be wrong in code or configuration but I want to know if there is any way that I can see exact error code while socket connection (as we get in sl_connect()) in mqtt client library.Basically I want to debug socket connection in  mqtt_client example is it possible?

Multi output Flayback design

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Dear all.

I think about the multi-output by flayback.
(DC3.3V/450mA, DC15V/10mA, DC-15V/10mA, DC24V/30mA)
Our customer made the following transformer.
inductance : 700uH
Turn ratio (24V output) : 2.69:1
Turn ratio (12V output) : 5.38:1
Turn ratio (3.3V output) : 17.5:1
Feedback is 3.3V.
I want to get good cross regulation of 12V and 24V, what kind of method is there?
I am understood that the output voltage changes to some extent because Duty changes.

Regards,
PAN-M


BQ25606: Is BQ25606 Charger IC input connected to the output of wireless power receiver?

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Part Number:BQ25606

I´m looking behalf of our designer for Li-Ion charger IC (EVM kit) with follow specs:
-   Part: Battery charger reference board (EVM kit)
-   Topology: Switch-mode buck
-   Battery chemistry: Li-Ion
-   Number of series cells: 1
-   Control interface: standalone
-   Operating Vin: 12V, 1.25A (typ); 5V, 2.5A (min)
-   Battery charge voltage: 4.2V (min/max)
-   Charge current: 2.5A – 3A

May I ask you kindly to confirm if item code: BQ25606 is only/best choise or could we consider to use some other too?

If BQ25606 recommended, couple questions

- Charger IC input: connected to the output of wireless power receiver?

- How to connect D+ and D- pins when there is 5V – 12V unknown adaptor at the VBUS input?

ADS7953: ADS7953 spi issue

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Part Number:ADS7953

hello

    we used the ADS7953 for my design,as the  figure 1,

now the chip working is ok ,and i can read the right value,but when i test the signal,i have found the SDI ,SCL,CS is ok,the SDO maybe not quite right ,

please refer the figure 2:the red line marked maybe have problem,why is there a another signal here,and the rising edge was so slow.please refer the figure 3:

if we disconnect with cpu,the ADS7953 output signal also not right,please see figure 4,when i disconnect with cpu ,the falling edge of the signal become very slow( when connect with cpu ,the rising edge is slow)

can you tell me,why has the happend? and is this normal or not?

thanks you very much.

fugure 1

figure 2

figure 3

figure 4

Linux/BEAGLEBK: GPS navigation system

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Part Number:BEAGLEBK

Tool/software: Linux

Hi , I have to develop a GPS  Navigation system and I have selected the Beagle bone black wireless for same running Ubuntu or any light-weight OS .

1.Can i build a navigation system on this board ?

2.Is this processor is powerful enough to handle navigation system ?

3.How  CPU will be used by this navigation ? And what cpu power will be available for me to do other things?

If this processor is not capable for this system suggest me  which processor (particularly available board with inbuilt CAN controller ) i can use .

Thanks and Regards

Indrajit.

Starterware/TMS320F28379D: Regarding given example of IIR 2P2Z filter

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Part Number:TMS320F28379D

Tool/software: Starterware

As TI providing a lot of examples to quick start our application so my query regarding the example given in c2000ware the location is

"C:\ti\c2000\C2000Ware_1_00_01_00\device_support\f2837xd\examples\cpu1\cla_iir2p2z\cpu01". 

This is an IIR filter using CLA. But The specification of this filter is not given and if I want to customize this filter as per my requirement how can I do. 

Suppose I have a 50Hz Sinusoidal signal of 800 Magnitude. and I want to make a filter which filters all the frequency above 35Hz, can I do this by changing the coefficients.

Please help me regarding this issue. 

Thank You

Ashutosh

UCC28910: Jumping from 12 to 19V

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Part Number:UCC28910

Hi,

UCC28910 is being used following the typical application suggestion closely except for one difference: the snubber network  on the output side is omitted. The power supply works well without this snubber.

However, if there is a relay  placed next to the flyback, the output voltage sometimes jumps from 12V up to 19V. This condition is stable and remains so with full or no load until the power is switched off. The output is then 12V as usual when switched on again.

We have been able to reproduce this effect by generating a strong E-field close to the converter. It seems that the primary side regulation is tricked into locking on to the wrong part of the primary side waveform and stays there.

Would adding the snubber help with this issue? It seems to be some kind of interference issue in the feedback loop.

The effect is not dependent on temperature or input voltage.

Thanks,

Tadeo

Linux/DRA725: Virtual and Manual I/O Timing Modes

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Part Number:DRA725

Tool/software: Linux

Hi,

uboot version: 2016.05

 look the document  "DRA72x Infotainment Applications Processor Silicon Revision 2.0.pdf"

 

P203:

  the M6 pin is multiplex for vin1a_d0, so it must be set manual mode then set the A_DELAY and G_DELAY;

 but  I look the mux_data.h about config on the uboot , I find can't match.

file path: board/ti/dra7xx/mux_data.h


it set VIRTUAL_MODE12,  should it not set  manual mode?

 

Best regards,

Cesar.

 

TMS320C6748: How to share external memories(ddr3) b/w two C6748?

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Part Number:TMS320C6748

Hi Champs, I'm thinking of how to share external memories(ddr3) b/w two c6748. Is there any way for it? I would appreciate it if you would give me some advice. For example, can I use TS3DDR4000 DDR Switch/Multiplexer? Regards, j-breeze

DLPC900: DLP lightcrafter 9000EVM

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Part Number:DLPC900

Hi,

I want to konw the mirror flickering problem about DLP lightcrafter 9000EVM.When we upload a static pattern, the mirror won’t stay in one state (on/off) for too long,preventing mirrors from getting stuck. So the mirror will be termed in ‘flat’ state every cycle by the manufacturers,which will cause the reflecting power decay suddenly.You can find the detailed information from the article suppression kHz-frequency switching noise in the digital micro-mirror devices’. So I want to konw if the DLP lightcrafter 9000EVM have the same problem?If it has,what’s the cycle time?Dose it exist in all dlp series from TI.

Best regards,

CCS/CC2640R2F-Q1: Is it possible to hide the connection information from the outside?

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Part Number:CC2640R2F-Q1

Tool/software: Code Composer Studio

Hi All,

Please tell me about the some question from the customer whether the following contents can be realized with BLE.

1. Is there a way to prevent Connection Information from being sniffed externally when pairing for the first time?

2. Is pairing of terminals that have completed LTK (Long Term Key) exchange after pairing not sniffed from the outside?

    How can I set it up with BLE-Stack? (SIMPLELINK-CC2640R2-SDK_1.40.00.45)

3. Is there a Document that lists parameters (such as connection interval and latency) defined by BLE SIG?

    They want to know if there is a parameter list that users can set arbitrarily.

CC1310: Range and Signal Level

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Part Number:CC1310

Hello ,

I work on custom board which includes CC1310 and CC1190.

And I prepared almost all of the code part and made the modules communicate.

Now I am testing range of my boards.

Max RSSI val is (-25dB  ...  -30 dB) , in the closest case  (but sometimes I get -128dB it is not every time but it happens.Anyway this is also a problem and i am working on it)

and Max range is about 200 m .I got these measurements in an area with trees and buildings.But there was no building between the receiver and transmitter.

This distance is so low and insufficient.

I have checked

PA,LNA,HGM

in normal situation boards waits rf signal  and at this situation

PA    = 0

LNA  = 1

HGM = 1

code part:

PIN_setOutputValue(pinHandle, Board_HGM,1);//high gain
PIN_setOutputValue(pinHandle, Board_PA_EN, 0);
PIN_setOutputValue(pinHandle, Board_LNA_EN, 1);//rx mode

and when boards  send signal 

PA    = 1

LNA  = 0

HGM = 1

code part:

PIN_setOutputValue(pinHandle, Board_HGM,1);//high gain
PIN_setOutputValue(pinHandle, Board_PA_EN, 1);
PIN_setOutputValue(pinHandle, Board_LNA_EN, 0);//tx mode

I set and verified this signal. Are these values correct ?

And also my Smartrf settings is 

// Frequency: 868.00000 MHz
// Data Format: Serial mode disable
// Deviation: 5.000 kHz
// Packet Length Config: Variable
// Max Packet Length: 128
// Packet Length: 20
// RX Filter BW: 98 kHz
// Symbol Rate: 50.00000 kBaud
// Sync Word Length: 32 Bits
// TX Power: 26 dBm (requires define CCFG_FORCE_VDDR_HH = 0 in ccfg.c, see CC13xx/CC26xx Technical Reference Manual)(done)
// Whitening: No whitening

Please inform me about this subjects .

Thanks,

Emre 

TLC3702: Any SPICE models available for this or any other TI comparator?

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Part Number:TLC3702

I'd like to simulate a voltage-controlled oscillator in SPICE using this or any similar TI comparator but I can't find the SPICE models anywhere.  Do they exist?

Thanks!

CCS/TMS320F28379D: Regarding debug of dual core processor

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Part Number:TMS320F28379D

Tool/software: Code Composer Studio

Generally, when I debug any program the CCS ask me to choose the CPU1 or CPU2 or BOTH. 

But Now I want to work on one core (CPU1) so where is to configure in CCS to program only one core and debug only one core. 

It also not asking me to choose the core and I have to program both cores which are wasting my time again and again.

Please tell me where to choose the core to the programme.

Ashutosh 

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