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CCS/TMS320C5515: How can I use CCS7 to program a compiled .out file?

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Part Number:TMS320C5515

Tool/software: Code Composer Studio

I have a project targeting the C5515 on the ezDSP that compiles to a .out file. I would like to send this file to someone for them to use, rather than the whole source tree. How can someone use CCS7 to program the C5515 on an ezDSP with such a file?


TPA2012D2: TPA2012D2 Power-up condition

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Part Number:TPA2012D2

Hi all,

Could you let me know if there is a restriction for power-up and down condition of TPA2012DA?

I wonder there is a threshold  voltage for internal logic reset (PoR) etc...

Can it be powered from  midpoint voltage?


Best regards,

TPS54618-Q1: Schematic Double Confirm

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Part Number:TPS54618-Q1

Dear Team,

Here is the schematic after checking with the customer.

Can you help on final review of four rails?

BR

Kevin

LAUNCHXL-CC2640R2: Sample Project for SmartRF Studio BLE mode Packet RX

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Part Number:LAUNCHXL-CC2640R2

Hi

I am using SmartRf Studio in BLE mode, packet RX to receive BLE packets from my custom board. What sample project should I use to get the same functionality?

Thank you

SN75DP119: eDP to DP

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Part Number:SN75DP119

Hi Sirs,

Sorry to bother you.

Based on your answered, we can use eDP signal to connect DP monitor, right?

Input and Output ripple up to 1Vpp

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Hello,

I have a question about the TPS75501KTT regulator.   I cannot find this regulator in your part numbers dropdown list above but have just typed it in anyway.    The circuit I have is as below with Co being 68uF with 1.8R ESR as the datasheet suggests is needed for stability.

I have been seeing a 116kHz sawtooth ripple on both the input and output.  Sometimes the input ripple has a lower (around 28kHz) frequency, but the output ripple is usually around 116kHz.    The ripple I am seeing is a definite periodic sawtooth signal sometimes up to hundreds of mVpp.   

I have only been able to stop this ripple with a 220uF electrolytic and a 10uF ceramic capacitors in parallel at the input.  It seems to be very sensitive to what is at the input, which surprises me as the datasheet says the output is where you have to be careful.   At the input, if there is no 220uF electrolytic(just the 10uF ceramic), or the 10uF cap is changed to 1uF as they suggest in the datasheet (with the 220uF electrolytic cap still in place) , there is ripple on both the input and the output.  This is even with the 68uF 1.8R ESR cap on the output (which is within the ESR guidelines suggested in the datasheet for stabilising the regulator feedback loop).  There is a 10uF ceramic cap in parallel with the output cap, but removing this doesn't help the ripple, it makes it worse.   

I have the adjustable version set to 3V3 output with 5V at the input.  The feedback resistors are set for 40uA as the datasheet suggests. There is 0.85A being drawn in the circuit the regulator is powering.  Even a stable external load drawing 0.6A with no transients will trigger the ripple if I don't have any 220uF cap on the input.   The package paddle is soldered to the board and a good heatsink provided so there are no thermal issues.  

Would you have any suggestions of why such a large capacitance must be on the input when the datasheet says 1uF should be fine?  Why isn't the circuit stable even with a suggested cap on the output? 

Many thanks for your help and input,

TPS2492: Behavior at Over-Current/Short-Circuit

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Part Number:TPS2492

TPS2492 Datasheet, Page 8, says "If ID < ID_ALLOWED, the amplifier turns the gate of M1 full on because there is no overload condition; otherwise GATE is regulated to maintain the ID = ID_ALLOWED relationship."

ID_ALLOWED corresponds to 50mV of (VCC - SENSE) at low VDS, and < 50mV with power limiting trip.

But it seems ID can go much larger than 50mV at short circuit, is it because ID is "rapidly rising" and the regulation can not respond on time?

TPS62811-Q1: Final Schematic Review

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Part Number:TPS62811-Q1

Dear Team,

Here is the schematic, can you help on final review it?

BR

Kevin


Linux/AM5718: The 12-bit grayscale input data into VIP on AM5718

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Part Number:AM5718

Tool/software: Linux

Hello,

We have several questions about VIP on AM5718.

1.Could you tell me whether AM5718 running PROCESSOR-SDK-LINUX-RT-AM57X (v5.2) support 12-bit RAW data input into VIP?
  At page 1893 in TRM, "24-bit data input plus discrete syncs can be configured to include: 12/16-bit RAW Capture" is described.
  However, VIP Driver doesn't support 16-bit RAW capture (I think this includes 12-bit RAW data capture), which is described in the following URL.
  software-dl.ti.com/.../Foundational_Components_Kernel_Drivers.html

2.Can we use the 16-bit wide in the UYVY mode as a 12-bit RAW data input port?
  We want to know whether we can capture 12-bit RAW data in the UYVY mode.

Best Regards,
Nomo

AWR1843BOOST: cannot download XDS Emulation Software Package

TUSB522P: TUSB522P pull-up/down resistor settings & potential impacts

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Part Number:TUSB522P

Hi,

i'm working on a USB-C design which involves TUSB522P USB3.1 dual channel redriver & I noticed in a certain copy of reference designs the resistors used

1) All pull-up pull-down resistors were set to 47Kohm following the datasheet However, the test boar's typical design section. However looking into the EVM schematics, it seems to be using 1Kohm resistors instead? Which one should i take reference from? Our application uses 47Kohm for now & i would like to understand the implication of change in resistor values for my design.

2) All of our boards were working fine and passing the USB compliance test. This is the one unit that suddenly failed on only PORT 1 (RX). TX2 and RX2 ports are working, but marginally failing the eye-diagram TX test. Adjusting the OS1 and DE1 settings did not help much - so maybe TX1 also has some kind of malfunction?

3) The part was reworked and replaced with a good part and board system hub works fine again. Does this implies that i might be having a failed device here?

Regards,

Leo

CC2640R2F: best practice question related to Simplelink I2S driver and Mp4 files on SD card or flash

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Part Number:CC2640R2F

Hi there,

we are working on a toy where need to be some sound played back. What would be best practice to do that. The sounds are created on a PC and saved on SD card in MP4 format. Are there any libraries to make life easier ?

Best wishes

Ralph

Linux/AM5728: How to change clock source (CLKCTRL Register) of timers and crossbar of IPUx from devicetree

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Part Number:AM5728

Tool/software: Linux

Hello,

I want to change clock source of timers  and crossbar of IPUx from devicetree.

I found the way to change clock source of pwm, but cannot find  timer's.

Is there the way to change change clock source of timers  and crossbar of IPUx from devicetree? 

Best Regards,

Reona

CCS/CC2640R2F: Uart task can't work

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Part Number:CC2640R2F

Tool/software: Code Composer Studio

Hey, guys

I create a uart task. It can write data normally. However, it cannot read things. The code is below:

static void Board_taskFxn(UArg arg0, UArg arg1)
{

    init();

    uint32_t events;

    while (1)
    {
        print_str("pending...\r\n");
        events = Event_pend(syncEvent, Event_Id_NONE, EVENTS,
                            ICALL_TIMEOUT_FOREVER);
        print_str("pending over.\r\n");

        if (events & UART_READ_EVT)
        {
            uart_process_read();
        }
    }
}

void Board_createTask() {

    Task_Params taskParams;

    // Configure task
    Task_Params_init(&taskParams);
    taskParams.stack = sbcTaskStack;
    taskParams.stackSize = TASK_STACK_SIZE;
    taskParams.priority = TASK_PRIORITY;

    Task_construct(&bTask, Board_taskFxn, &taskParams, NULL);
}

static void init(){
    ICall_registerApp(&selfEntity, &syncEvent);

    // Init UART and specify non-default parameters
    UART_init();
    UART_Params_init(&params);

    params.writeDataMode = UART_DATA_BINARY;
    params.readDataMode = UART_DATA_BINARY;
    params.readEcho = UART_ECHO_OFF;
    params.readMode = UART_MODE_CALLBACK;
    params.readCallback = readCallback;

    params.baudRate = 115200;
    params.parityType = UART_PAR_NONE;
    params.stopBits = UART_STOP_ONE;

    handle = UART_open(Board_UART0, &params);
    UART_control(handle, UARTCC26XX_CMD_RETURN_PARTIAL_ENABLE, NULL);

    print_str("Init completed\r\n");
}

static void readCallback(UART_Handle handle, void *buffer, size_t size)
{
    Event_post(syncEvent, UART_READ_EVT);
    UART_read(handle, uartReadBuf, MAX_NUM_RX_BYTES);
}

void print_str(uint8 *cs)
{
    int size = strlen(cs);
    UART_write(handle, cs, size);
}

It can print "pending" but no "pending over". It seems Even_pend function never returns.

How can i fix it? Help me!

Thank you!

RTOS/DS90UB964-Q1: DS90UB964-Q1 and DS90UB954-Q1 porting guide


Please tell me the difference between the faded product LMZ10501SHE and the current product LMZ10501SILT.

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Part Number:LMZ10501

We are considering replacing the declining product LMZ10501SHE with the current product LMZ10501SILT.

I can not find the material of LMZ10501SHE of faded items, so please tell me the difference with the current product LMZ10501SILT.

Please send me a document that describes the differences.

TMS570LS1224: TMS570LS12X issues

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Part Number:TMS570LS1224

The Hercules TMS570LS12x has two processors running in lock-step correct? I just wanted to confirm that both processor chips will be monitoring both booster pack headers and not 1 each.

TCA6424A: I2C

CC2564CMSP432BTBLESW: BLE auto reconnection in SPPLEDemo

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Part Number:CC2564CMSP432BTBLESW

Hello,

I'm using cc2564C with STM32F401 MCU to build a project that has BT 3.0 (HID profile)and BLE(custom profile) features. I followed the example code HIDDemo + SPPLEDemo, it works fine with my iPhone.

I would like to know which API should I use for auto reconnection with the iPhone? Auto reconnection is working well in BT3.0 by calling "ConnectRemoteHIDHost" in HID Demo, but cannot find a suitable API in SPPLEDemo for issuing the connection action from the device (cc2564c) to iPhone if iPhone as a Central device.

Thanks,

Kevin

OPT9221: About the layouts of OPT9221 and DDR2

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Part Number:OPT9221

Hi, TI engineers.

DDR is necessary to OPT9221.

Is there any reference designs related to DDR2 concerning OPT9221?

Application notes on the layout of DDR2 are also OK.

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