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AM5728: UART polarity issue

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Part Number: AM5728

Hi,

 

The character corruption occurred on serial console of Tera Term via UART port when the customer input some keys from PC to their own board based on AM5728. According to their investigation, it seems that signal polarity on uart3_rxd line was inverted. The signal between SN75C185 and uart3_rxd is low “0” during no communication, and start bit looks like “1”.

Is it possible to invert polarity on uart3_rxd for changing start bit as “1” by setting any register ?

Or do you have any idea to solve this ?

 

The uart3_txd works correctly. The signal is high “1” during no communication, and start bit is “0” active low. Therefore, the characters were displayed during booting. AM5728 could send data to PC correctly.

 

Thanks and regards,

Hideaki


TMDS181: Basic Questions for EQ

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Part Number: TMDS181

Hi, Team,

I need to check the below items quickly. Could you please provide the answer for below questions? Please allow me if there are answers on the datasheet. These questions are for automatic configuration.

1. Please let me know the timing which the signal is equalized. Is it 180us after the input frequency is detected?
2. Does EQ configuration change dynamically during a cable is connected?
3. Could you please let me know how to determine the EQ level?
4. If the signal EQ is not adapted, does TMDS181 bypass the signal?

Best Regards,
Satoshi Yone

BQ34Z100-G1: LEAD ACID BATTERY CONFIGURATION

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Part Number: BQ34Z100-G1

I want to use this IC with two 12V, 200Ah batteries in series.

  • Should I consider them as 12 cells of 2V in series or 2 cells of 12V in series.

Also. I want to use the IC (not EVM) and communicate with it through I2C of arduino.

  • Can I know the command format that should be followed while writing and reading through I2C .
  • What are the changes to be made for default values.

Thanks in advance.

TMS320F28388D: HW divide function

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Part Number: TMS320F28388D

Hi team, 

My customer which made servo system is really interested in HW divide of F28388X.

They want to know more details for this, especially for the actural calculating speed, but I can't find it both in TRM and datasheet.

Could you kindly tell me where I can find it?

BR

Emma

BQ51013B: Thermal performance at light load

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Part Number: BQ51013B

Hi TI,

Please let me know thermal performance when output current value is 20mA.

BQ51013BEVM userguide shows data at 1A.

Is there any thermal issue because of ultra low load?

Battery: 30mAh, Ichg: 20mA

LMR36015: Simulation in TINA-TI by importing PSPICE model

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Part Number: LMR36015

Hi team,

I'm trying to simulate LMR36015 at TINA-TI by importing PSPICE model.

However, it can't run well and showed message as below.

Node: 283 Component/Terminals: .U1 X_U4_U6.N00055

Node: 99 Component/Terminals: .U1 CONT"

Could you  please provide any advice to run the simulation successfully?

Finally, I'd like to simulate inverting buck-boost using LMR36015.

Best regards,

Shota Mago(Please visit the site to view this file)

CC2564MODA: Connecting SMA connector for radio certification tests

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Part Number: CC2564MODA

Hi,

My customer is planning to get radio certification with CC2564MODA.

The certification body requested to put SMA connector between spectrum analyzer and DUT(CC2564MODA).
As the module is antenna integrated, customer needs to modify the module and connect wire to SMA connector.
Where the customer should connect SMA connector on CC2564MODA?

Thanks and regards,
Koichiro Tashiro

BQ25703A: About Basic Question for BQ25703A

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Part Number: BQ25703A

Hi  

I have some basic question for  BQ25703A. 

Sorry...  I am very beginner for this device  please tell me these question.

1)  About  PROCHO Pin    

    We dose not use this pin ,  Dose we need   Pull UP or Open ??     

2)  About CMPIN snd CMPOUT pin 

    We dose not use these pin .   Dose we need  Pull UP or Open ?

    * DS said  CMPIN is ground   How to do CMPOUT Pin ?? 

3) About  EN_OTG Pin 

   We dose not use OTG function .   Dose we need  Pull Down or Open ?? 

4)  About  ILIM   function 

   We understood about  ILIM  voltage setting with current limit.  . 

   But we wonder about this  ILIM function,  what  happen after ILIM Current detect ?? 

   Charge Current Stop ??      Input current keep Limit Current ??  or   device became to  HIZ mode ??

Sorry ... very simple question . 

Thanks and Regard

March Jasper   (  Disty  Sugimoto ) 

 

    


CCS/CC2642R: External SPI Flash erase range

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Part Number: CC2642R

Tool/software: Code Composer Studio

Hi Ti member,

Develop Evironment:

MCU: CC2642R
External SPI Flash: MX25L51245G (size: 512M bit)
SDK:  simplelink_cc13x2_26x2_sdk_3_20_00_68
nvsexternal.syscfg: region size set with 0x4000000, sector size set with 0x1000

 I modify nvsexternal example code to run with below demand,
1. one file: 360K byte (fixed)
2. total files: 50 files (max)
3. file start address: 0x0 (1st file) 
4. 51th file will be re-start at address: 0x0 (cycle wirte: 0x0->0x5a000->0xb4000->0x10e000->...->0x0->0x5a000->0xb4000->0x10e000->...)

Before write a file, I use erase function : int_fast16_t NVS_erase(NVS_Handle handle, size_t offset, size_t size) to pre-erase a 360K byte space,

when i finish No. 45 file(file start address: 0xf78000, and i continue to pre-erase No. 46 file space start with address: 0xfd2000, when i pre-erase

No.46 file space done, I found the No.1 file data was miss.

the rule as below:

No. 45 file done, pre-erase No.46 file space, then No.1 file data will miss.(erased ?)

No. 46 file done, pre-erase No.47 file space, then No.2 file data will miss.(erased ?)

No. 47 file done, pre-erase No.48 file space, then No.3 file data will miss.(erased ?)

No. 48 file done, pre-erase No.49 file space, then No.4 file data will miss.(erased ?)

No. 49 file done, pre-erase No.50 file space, then No.5 file data will miss.(erased ?)

No. 50 file done, pre-erase No.51 file space, then No.6 file data will miss.(erased ?)


  Have any setting I need to modify ? Or this is the erase function limitation ? offset overflow ?

Sincerely,

TINA-TI: Significant difference between Tina-TI and Spice model

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Part Number: TINA-TI

Hi there,

i just tried to simulate the LM358 and encountered some problems. After some tries, i found out that the model included in TINA-TI and the SPICE Model that can be found at the product page is very different. I thought that the TI-tool should simulate the part from TI better, but simulating with LTSpice, i get exactly the resut from the datasheet, whereas with TINA-Ti i get something very different.

here the Simulations:

result:

Tina with LM358/101

result:

With the transient response much better as in the simulation before.

And with the LM358 (without the /101):

result:

with the output oscillating.

According to the Datasheet, the output should look like this:

I find these results troubleing. Can i use the Spice-Model for simulation? Why is the model in TI-Tina so off? Did I choose the wrong part? I have the strong feeling that i made a mistake setting up the simulation in TI-Tina. Please find attached both simulations.

(Please visit the site to view this file)

TPS40210-Q1: Inductor is very hot!!

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Part Number: TPS40210-Q1

Hello,

I have a problemm with temperature of coupled inductor. (SRF1280A-4R7Y) When i applied 1.0A at the 16.5V output side with 14Vinput, temperature of inductor goes up to 72°C. MOSFET and diode temperature is nearly 62°C. Do you have any suggestion to reduce to heat of the inductor?

Vin: 5-35V

Vout: 16.5V

Iout,max: 1.2A

L: SRF1280A-4R7Y

MOSFET: NVMFS5C673NL

Diode: V8P6HM3

Also, attached circuit works well in experimental but this circuit doesnt work in simulation. I think the model of TPS40210 doesnt correct in simulation.

 

Regards,

Bulent

CCS/LAUNCHXL-F28379D: C2000WARE

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Part Number: LAUNCHXL-F28379D

Tool/software: Code Composer Studio

Hi team,

I work with the LAUNCHL-F28379D board. I use Code Composer Studio 6.2.0.
Debug settings allow to run the programm in debug mode only on one of the two processors: either CPU1 or CPU2. The program on another processor runs without debugging information. Can I debug programs on both processors at the same time? What should I do?

And next question:

Why are the examples from controlSUITE or C2000Ware_DigitalPower_SDK compiled without errors if  in the Project Properties for "CCS General / Device" the "Generic C28xx Device" is set and compiled with an error if you select "TMS320F28379D (S)"?
Moreover, the error is shown in the same * .com file with which it was compiled without errors before. In addition, if you return “Generic C28xx Device” to “CCS General / Device”, another compilation error will occur.

CCS/MSP430FR5994: ADC- Two different channels for same input resulting in two different values.

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Part Number: MSP430FR5994

Tool/software: Code Composer Studio

Hey Community,

I am little perplexed, while using ADC. I am using two channels to measure an individual input for understanding ADC better. Contrary to my imagination and understanding as I looked up in Debuggermode for values of two channels, am getting two different values for the same input out of ADC Memoryregister. ADC12MEM0 = 2720 and ADC12MEM1 = 2000. The correct measured value is stored in ADC12MEM0 which is 2720. I calculated it manually as well. Can you please explain me what point am I missing or did I understand it falsely. Snippet of my code is attached

I'll appreciate your response.

thanks,

Jahangir

 ADC12CTL0 &= ~ADC12ENC;
 ADC12CTL0 |= ADC12SHT0_4 | ADC12ON;		// Sampling time, S&H=64 Cycles, ADC12 on
 ADC12CTL0 |= ADC12MSC;					// multiple sample and conversion
 ADC12CTL1 |= ADC12CONSEQ_2;				// Repeat-single-channel
 ADC12CTL1 |= ADC12SHP;					// Use sampling timer

ADC12CTL2 |= ADC12RES_2;				// 12-bit conversion results

ADC12MCTL0 |= ADC12INCH_8;  			// A8 ADC input select; Vref=AVCC
ADC12MCTL1 |= ADC12INCH_8;             // A8 ADC input select; Vref=AVCC
	 
ADC12CTL0 |= ADC12ENC | ADC12SC;        // Start sampling/conversion

    

TMDX654IDKEVM: SD-Card Interface; MMC1_SDCD connection to AM65xx

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Part Number: TMDX654IDKEVM

Hello everyone,

I have seen in your Reference Design for the AM65xx that the MMC1_SDCD is connected directly to the CPU. Also, there is a Pull-Up resistor to the VDSHV_SD_IO. As far as I know, this voltage is switched automatically from 3.3V to 1.8V in the SD protocol. But the datasheet says that Pin B24 has a max. voltage of 2V. I can´t see my mistake, can you help me?

Best regards

Adrian

CCS/TMDSLCDK6748: Where do I modify my SPI CS for GPIO?

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Part Number: TMDSLCDK6748

Tool/software: Code Composer Studio

Hi.

I want to use the TMDSLCDK6748 to control one GPIO among the SPI CS0-7 pins.

Using the SPI Example, CS operation is verified but no other CS can be controlled by GPIO.

I am using the example SPI_LoopbackExample_lcdkOMAPL138_c674xExampleProject provided by Ti.

Where can I modify it to use it as a GPIO?


SN74ACT244: SN74ACT244 output voltage issue

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Part Number: SN74ACT244

Hi Expert,

The customer find the SN74ACT244 will output a uncertain voltage at the circuit power on instant, which is unexpected. Is there any method to solve this issue? Do we have a updated device that contains a control block circuit to avoid this issue?

Thanks!

LMG1210: The waveform of HO is not normal.

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Part Number: LMG1210

I use the TINA to simulate a module based on the dirver LMG1210, but the results are not ideal. The following pictures are the circuit and the waveforms of the dot. It shows that both the upside and downside takes a long time. Could you provide me with some reasons and possible mistakes I have made ?


BQ27Z561: NTC temperature calculation

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Part Number: BQ27Z561

Hi team,

Could you please share the NTC temperature calculation formula

Thanks,

Miranda

CCS: TMS570LC4357 - safeti library use - stack data setting

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Tool/software: Code Composer Studio

i use safeti library.

I wonder the size of stack.

In the cmd file,  i set the memory and sections follows.

/*----------------------------------------------------------------------------*/
/* Memory Map                                                                 */

MEMORY
{

    VECTORS (X)    : origin=0x00000000 length=0x00000020
    FLASH0  (RX)   : origin=0x00000020 length=0x001FFFE0
    FLASH1  (RX)   : origin=0x00200000 length=0x00200000

    STACKS  (RW)   : origin=0x08000000 length=0x00021800
    RAM (RW)   : origin=0x8021800 length=0x19000
    HIGH_HANDLER     (RWX)  : origin=0x803A800 length=0x000800
    PROFILE(RW)    : origin=0x803B000 length=0x00008000 /* Added for profiling purposes */
    LOG (RW)    : origin=0x8043000 length=0x00003000 fill=0xDEADBEEF/* Added for logging purposes */
    FEE (R)    : origin=0xF0200000 length=0x00000064 fill=0xDEADBEEF /* For FEE testing, Valid only for sample application */

}


/*----------------------------------------------------------------------------*/
/* Section Configuration                                                      */

SECTIONS
{
    .excpt_vecs  : START( ulFlashStartAddr ) {} > VECTORS
    .sl_stflash_SRAM    : RUN = HIGH_HANDLER, LOAD = FLASH0|FLASH1, LOAD_START(ulHighHandlerLoadStart), LOAD_END(ulHighHandlerLoadEnd),
          LOAD_SIZE(ulHighHandlerSize), RUN_START( ulHighHandlerStartAddr ), RUN_END( ulHighHandlerEndAddr )
    .text      : {} >  FLASH0|FLASH1
    .const     : END( ulFlashEndAddr )
              {} > FLASH0|FLASH1
    .cinit      : {} > FLASH0|FLASH1
    .pinit      : {} > FLASH0|FLASH1
    .STACK_DATA_svc     : {. += 1024;} > STACKS, RUN_START(StackModeSVC)
    .STACK_DATA_fiq     : {. += 1024;} > STACKS, RUN_START(StackModeFIQ)
    .STACK_DATA_irq     : {. += 1024;} > STACKS, RUN_START(StackModeIRQ)
    .STACK_DATA_abt     : {. += 1024;} > STACKS, RUN_START(StackModeABT)
    .STACK_DATA_und     : {. += 1024;} > STACKS, RUN_START(StackModeUND)
    .STACK_DATA_sys     : {. += 132096;} > STACKS, RUN_START(StackModeSYS)
    .bss      : {} > RAM
    .data      : {} > RAM
    .sysmem  : {} > RAM

    LOG_DATA   : START( ulLOGStartAddr ), END( ulLOGEndAddr ) > LOG
    PROFILE_DATA        : START( ulPROFILEStartAddr ), END( ulPROFILEEndAddr ) > PROFILE
}

Then, the used stack is fulled in the map file.

MEMORY CONFIGURATION

         name            origin    length      used     unused   attr    fill
----------------------  --------  ---------  --------  --------  ----  --------
  VECTORS               00000000   00000020  00000020  00000000     X
  FLASH0                00000020   001fffe0  00019dd8  001e6208  R  X
  FLASH1                00200000   00200000  00000000  00200000  R  X
  STACKS                08000000   00021800  00021800  00000000  RW 
  RAM                   08021800   00019000  000043c0  00014c40  RW 
  HIGH_HANDLER          0803a800   00000800  00000330  000004d0  RW X
  PROFILE               0803b000   00008000  00000000  00008000  RW 
  LOG                   08043000   00003000  00003000  00000000  RW    deadbeef
  FEE                   f0200000   00000064  00000064  00000000  R     deadbeef

 Then, I wonder where is the user stack?. and It is the right setting to use stack for user as 132096 size?

TMS320F28069: Query regarding analog output pins in TMS320F28069

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Part Number: TMS320F28069

Does TMS320F28069 have analog output pins?

If so, can it be used for DAC output?

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