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SN65DPHY440SS: RSTN and VREG_OUT are unexpected low

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Part Number:SN65DPHY440SS

Hi,

Is there any reason that RSTN and VREG_OUT are still 0V after 1.8V is applied at Vcc with below design?  

  • RSTN is only connected to GND through a 0.22uF cap.
  • VREG_OUT has two 0.1uF cap and being connected to VDD pin with two 0.1uF cap.

What can be checked further to clarify this?

Thanks!

Antony


TPA3136D2: TPA3136D2 shutdown problem

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Part Number:TPA3136D2

Hello Team,

I am using TPA3136D2 in one of our design & facing the following issues :

(1)    Sometime power amplifier is drawing too much current & it is shutting down. After probing it is observed that the DC level of the both output pins are not same (OUTNL & OUTPL). This could be reason of fault generation.

(2)    We have shorted the Fault# and SD# pins to configure it in auto recovery mode & connected the same line to MCU. Pull up is given to make it default high.

(3)    We used output LC filter of 15uH & 2.2uF, currently capacitor is of electrolytic type. After removing the output filter capacitors we observed that class D is not shutting down. Is it recommended to use non polarized ceramic cap or film cap? With the ceramic is it required to use some small resistance as the ESR of ceramic is low?

 If required I can share the portion of the schematics with some expert in mail communication. Please suggest any improvement on the schematics can be done to solve the mentioned issues or in past this IC gave similar issues?

Thanks,

Sayantan Ghosh, Hardware Design Engineer - Robert Bosch.

Email : sayantan.ghosh@in.bosch.com

Phone : +918066571392

Mobile : +917708379876

CC1350: heap size of CC1350

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Part Number:CC1350

Hi,

i am using CC1350 launchpad and i want to increase the heap size of the CC1350 controller, so is there any configuration settings to increase the heap size.

i want to dynamically allocate the memory for that i required more space of the heap segment.

please suggest me any configuration settings

Regards,

RTOS/CC2652R: Why can't you add callback functions to every feature in ServiceAttrTbl?

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Part Number:CC2652R

Tool/software: TI-RTOS

Register a GATT service as shown below. The service has a callback function Button_ServiceCBs, but why can't you add a callback function to each feature in ServiceAttrTbl?

 GATTServApp_RegisterService(Button_ServiceAttrTbl,
                                         GATT_NUM_ATTRS(Button_ServiceAttrTbl),
                                         GATT_MAX_ENCRYPT_KEY_SIZE,
                                         &Button_ServiceCBs);

 

TMS320F28379D: Multiple applications in a single CPU

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Part Number:TMS320F28379D

Hello,

I have implemented 2 applications to run both within CPU1. Application_1 is a custom bootloader which programs (through FAPI) application_2 binary into FLASH. Once it has been programmed, then it long branches to it and starts executing application_2 (Blink LED). The problem is that code is jumping to ESTOP0 when, in application_2, function "InitGpio()" is executed. As this doesn't happen if I only execute application_2 (without application_1), could anyone tell me if there is anything which must be taken into account when executing application_2 coming from executing application_1?

Is it possible that there is some sort of conflict when initializing something in application_2 because, for example, InitGpio() has already been called from application_1.

Here is the important code of application_1:

InitSysCtrl();
InitGpio();
DINT;
InitPieCtrl();
IER = 0x0000;
IFR = 0x0000;
InitPieVectTable();
EnableInterrupts();
InitFlash();
SeizeFlashPump();
/* .
 * .
 * .
 * application_1 code
 * .
 * .
 * .
*/
ReleaseFlashPump();
DINT;
InitPieCtrl();
IER = 0x0000;
IFR = 0x0000;
asm (" LB 0x082000");

And here is the important code of application_2:

InitSysCtrl();
InitGpio();
GPIO_SetupPinMux(31, GPIO_MUX_CPU1, 0);
GPIO_SetupPinOptions(31, GPIO_OUTPUT, GPIO_PUSHPULL);
DINT;
InitPieCtrl();
IER = 0x0000;
IFR = 0x0000;
InitPieVectTable();
EINT;
ERTM;
/* .
 * .
 * .
 * application_2 code
 * .
 * .
 * .
*/

Best regards,

Adria

RTOS/PROCESSOR-SDK-AM335X: How to query the usage of the TCP buffer?

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Part Number:PROCESSOR-SDK-AM335X

Tool/software: TI-RTOS

Hello,

I was wondering if there's any chance that I could monitor the usage of the TCP buffer with CCS.

I'm currently developing a TCP server and having some trouble...

TCP server is running on AM3359 custom board with the latest pdk(pdk_am335x_1_0_12) and ndk(ndk_3_40_01_01).

I need this server to run as fast as it can so that it can handle the packets coming from the client as fast as 1ms.

It seems that the server dies(or freeze?) after two minutes or so...

So when I capture the ethernet packets with Wireshark, when the server die, the client(Windows PC) tries four times to re transmit the packet.

And after awhile, the server gives error code 60 which is defined as NDK_ETIMEDOUT.

I have changed tcp receive buffer size to 65536 and it seems that the server takes longer to die.(Tcp.receiveBufSize = 65536;)

I'm thinking that it might be the receive buffer or send buffer that is not properly handled(freed?) so that the server is freezing.

Thank you!

LM76002: Usibg inducor of LM76002

TMUX1511: Tolerant voltge on input/output pins

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Part Number:TMUX1511

Hi team,

Could you clarify how much voltage input/output can tolerate? Should I refer "VS or VD" and "VS_off or VD_off" in the recommended conditions?

The reason why I ask you is the description in 8.3.2 which the input/output can tolerate up to 2×VDD is confusing for me.

If this description is true, the condition VDD = 0, any voltage can't be appied to input/output.

Regards,

Saito


LP8860-Q1: Combined Output Operation and Diagnostics

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Part Number:LP8860-Q1

Hello,

Background:

LP8860-Q1 is operated with all outputs (OUT1 - OUT4) shorted together to maximize LED current up to 600 mA. 8 LEDs are operated in series with Vf between 2.75V and 3.5V for each LED.

Questions:

1) What are the EEPROM parameters for this configuration ? LED_STRING_CONF[2:0] -> 110 or 101 ?

2) Will fault detection of Shorts & Open still work ? Is there additional configuration necessary ?

3)The boost adaptation and protection is explained in Figure 29 of datahsheet. With all outputs on same voltage level, will comparator levels work properly ?

4) Is it possible to detect the short / Open of a single LED ?

Best Regards

Martin

AWR1642BOOST: AWR1642BOOST

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Part Number:AWR1642BOOST

Hi,

This is related to the 'Driver Vital Signs Monitoring' using the AWR1642BOOST ES 1.0 EVM. I have successfully ran the Demo on a 64-bit system and wanted to know if it is possible to run this demo on 32-bit system.

Is there any version of the 'Vital Signs' that is compatible with a 32 bit system?

-nalini

TMS320F28379D: TMS320F28379D : EPWM Interrupt

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Part Number:TMS320F28379D

Hi,

I wanted to use the epwm timer interrupt for starting a branch in code in TMS320F28379D.  I want the interrupt to get generated for an up-down epwm counter when the counter value reaches zero. I referred to the the manual. There is no such mention of when is the epwm interrupt generated i.e. at the time of underflow, overflow or period match. I had previously such type of timer in TMS320F2812, where there was a provision regarding the setting of event for the occurence of the interrupt.

Any help in this situation would be highly regarded.

CC2650: Flash Primary mac Address with Uniflash Cmd line

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Part Number:CC2650

Hello 

I am preparing a mass production batch with a device based on the CC2650 and I need to create an easy to use tool to flash the firmware and the Primary Mac Address on the device, but as I can not see any option to flash the MAC address on the Standalone Command line tool from Uniflash.

How can I create a one-step tool or command to flash the firmware a the Mac address?

Is this possible with Uniflash?

Thank you

Carlos

CCS/MSP430FR2633: Continuous refresh of a variable in watch window(debug mode)

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Part Number:MSP430FR2633

Tool/software: Code Composer Studio

Hello,

              How to enable Continuous refresh for a global and a local variable??

B.R

Gourav

RTOS/AM5728: rtos and processor sdk

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Part Number:AM5728

Tool/software: TI-RTOS

Hi,

How can i install both rtos sdk and linux processr sdk in am5728 evm and how can i use in both rtos examples and processor sdk examples what i need .

please guide me .

Thanks and regards,

K Subrahmaniam 

BQ4050: is it possible to modify Max Error by the customer without cycling?

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Part Number:BQ4050

dears,

some customers reflect that the Max Error could not be programmed by themselves, cycling is a must to update it, thus increasing the cost and affecting the efficiency of the production. they wonder if any method to program the parameters with the learned data and then program the Max Error to 2% and not necessary to cycle every battery pack.

thanks!


USB HUB to External Interface connector interfacing lines

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Hello

We planned to use 6 port USB HUB in our design, because of limitation in connector pin availability we are planning few customization in design and have few concerns regarding the same as listed below

 

This is a complete custom design, In our interface connector we have only 4 pins left which can support USB3.0 signals and we do not have any pins left to provide USB2.0 signals,

We cannot change the connector to provide additional signals (Limitation)

In the upstream port we can provide only USB3.0 signals (Limitation)

 

HUB has to support both USB 3.0 and USB 2.0 devices in its downstream ports this is the requirement,

Our device can be interfaced with two different Host devices, one with USB 2.0 Support only and another with USB 3.0

 

Kindly refer the attached Block diagram

We need clarification

With only USB3.0 signals interfaced with USB HUB in upstream port can we access USB2.0 devices in the downstream ports,

We Plan to provide a High speed SPDT switch for 1 pair of signals "between USB 3.0 TX signal and USB2.0 signal", such that when needed we can select USB2.0 only or we can select USB3.0 only,

 

 

please let us know is our approach correct or any major concerns which needs to be taken care,

Regards

Nidhi P Shetty

 

 

LP5569: LP5569 EVM Firmware source

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Part Number:LP5569

I recently purchased  MSP432 LaunchPad development kit and EVM (BOOSTXL-LP5569)  and connected both and tried to Run the EVM and control LED,

But could not succeed because when i tried read the i got I2C read error and write error. The steps given on TI guide did not solve the issue.

Can any one help on this ? Any Firmware source code apart from verifying with EVM ?

Thanks

IWR1642BOOST: iwr1642

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Part Number:IWR1642BOOST

Hi,

Is it possible to control sensor On and OFF using the switch avialable on the IC ? or throgh any i/O PORT?

But, In mmwave demo with iwr1642 The gui has sensor stop button, but it is not stopping the sensor, it is blocking the communication.

So how can the switching on of ic can be controled.

Like, I have some external signal when it is on my mmwave sensor should be on, else it should be off.

regards

TPS65216: Customers want to choose PMIC for AM3354. Which PMIC device is better choose?

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Part Number:TPS65216

Hi team,

        Customers want to choose PMIC for AM3354. May I know which PMIC device is better choose?

They want to low cost one. I know TPS65216 may be cheater than other PMIC. But I worried if TPS65216 can work when AMC3354 OPP running on 1000MHz.

DO you have any suggestions?

Thanks!

CCS/MSP430F427A: MSP430F427A

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Part Number:MSP430F427A

Tool/software: Code Composer Studio

sir can you please tell methe voltage between r33 &r23,same as between all the registers for lcd interfacing with msps430f427a

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