Part Number:DRV8860
I am looking to daisy chain some DRV8860 chips. I have a few questions...
1. Is there a maximum number you can daisy chain?
2. For the timing constraints in section 7.6, the latch to clk time (th) is 1 uS. Is that the delay I need to give it before the clk signal is generated?
3. For the CLK high and low time, it says a minimum of 2.5 uS. Does that mean I can go no slower than 400 Khz on the clk?
4. Are there any timing constraints when daisy chaining?
Part Number:ADS1271
I want a list over the filter coefficients of the FIR filter to get a more detailed picture of the step response than can be found in fig 62 of the data sheet. I am using the high resolution mode.
Part Number:ISO122
Dear sir, please help
I need isolation amplifier (follower) to transfer 1...2V DC voltage. I have two unipolar power supplies +5V-1 and +5V-2. These power supplies isolated from each other. Can I use ISO122? Can you recommend another amplifier?
TIA
Sincerely,
Vladimir Naumenkov
www.agat.by
Part Number:CC3220SF-LAUNCHXL
Hi,
I'm using MQTT client exmaple and CCS and it works very well. I need to program the flash memory so the device starts to boot up once the power is available. When I use UniFlash, it reads the program load completed successfully but the device is not operating. Here is some snapshots:
I assume it has to do something with UniFlash setup.
Thanks,
Part Number:CC3220MODA
Hi Champs,
Our customer would like to know the RSSI strength for each channel simultaneously to find out the lower power channel in the area.
Do we have a such feature available with CC3220MODA?
If not, i would like to know any alternatives.
Best regards,
Hitoshi
.
Part Number:TAS5411-Q1
Here is my schematic diagram. Please check if there is any problem.
I did an experiment to connect the IIC of the demo board of TAS5411 to TP80 and TP81 of I2C in the figure below, so that the I2C bus is equivalent to the 5411 and 5411 of our DEMO board in parallel. At this time, our 4G module can read DEMO 5411 through I2C. I measured the pin level of our 5411 and demo are the same. Please help check where our circuit is wrong. Thank you!
The bottom figure is the I2C waveform with abnormal communication with our board 5411. The address has been sent 0x6c, write data, no response. These waveforms are correct, the normal power amplifier should return to ACK, but there is no ACK.
Part Number:AWR1843
Hi Experts,
There are many points that say "refer to system spec document" in Radar Hardware Accelerator 
.
Could you please let me know what document I should refer to?
I was not able to find the related potions in the datasheet.
Thank you very much for you kind guide.
Best regards,
Hitoshi
Part Number:TPS61088-Q1
When calculating the selection of 61088 DCDC, we encounter the following problems. Please help us to solve them.
1. The inductance selection is calculated according to spec formula at least 5.1uH, but the inductance simulated by WEBENCH is 2.2uH. Which type should I choose?
2. The selection of capacitance is calculated by spec formula at least 20uF, but the capacitance simulated by WEBENCH is 15+6.8uF. Which type should I choose?
3. Please help to calculate the resistance and capacitance of the comp pin according to the current, voltage and frequency requirements in the table below. Thank you.
Part Number:TMS320DM8127
Tool/software: Code Composer Studio
Hi Experts,
I"m trying to connect to board DM8127 (Camera Starter Kit). but when I test connection on CCS v8, this message appeared:
I tried to follow some instructions about FTDI driver ,but seem it doesn't work. This is what was shown when I run FT - PROG :
i have tried to apply a new template to this device (namely FT222H). Could this be the reason for all of my trouble ?
Can someone help me with this ? Thanks so much
Part Number:UCC28951-Q1
SIR,
I AM GOING TO SWITCH FROM THE UCC28950 TO THE UCC28951-Q1 DUE TO THE UVLO. I WOULD LIKE TO ASK A COUPLE OF QUESTIONS REGARDING THE UCC28951-Q1 IC.
I have seen in the forum the following statement:
"If there is no input voltage to the power train and VCC is applied to the UCC28951-Q1 controller then the OUTA, OUTB, OUTC and OUTD signals will be present. Each of them will be at 50% duty cycle - less a little to allow for the dead times you have programmed. The controller will operate at Dmax because the output is below its set-point."
I BELIEVE I UNDERSTAND THAT STATEMENT.
I AM IN THE PROCESS OF A DESIGN THAT WILL NOT BE USING THE SR PINS AT FIRST,WILL USE SCHOTTKY DIODES IN THE OUTPUT STAGE.
Vin = 150V, Pout = 600W, Vout = 27V,
Question #1 -- IF I AM NOT GOING TO USE THE SR OUTPUT (Pin #18 Out E and Pin #17 Out F), DO I STILL NEED TO INSTALL THE COMPONENTS FOR, I BELIEVE, Pin #14 ADELEF? SAME QUESTION FOR Pin # 8 DELEF. I CAN ADD THESE LATER IF IT IS DECIDED? YES / NO?
Question #2 -- FROM WHAT I UNDERSTAND THE SAME TI EXCEL SPREADSHEET FOR THE UCC28950 IC IS THE SAME SPREADSHEET USED FOR THE UCC28951-Q1 IC?
Question #3 -- IS THERE SOME FORM OF LITERATURE WHICH MIGHT GUIDE ME IN SOME OF THE CRITICAL VOLTAGES WHICH I WOULD NEED TO BE AWARE OF BEFORE I APPLY VOLTAGE TO THE POWER TRAIN?
Question #4 -- JUST TO FIRE UP THE SIGNAL CIRCUIT, IS THE CURRENT SENSE CIRCUITRY REQUIRED FOR Pin #15 CS? I DON'T SEE WHERE IT WOULD MATTER UNTIL VOLTAGE IS APPLIED TO THE POWER TRAIN.
Question #5 -- WOULD YOU BE ABLE TO SUGGEST A COMFORTABLE SOFT-START TME AND POSSIBLY DELAY TIME FOR Pin #6 & 7? MAYBE A BALLPARK FIGURE JUST TO GET THE SIGNAL BOARD UP AND RUNNING?
LOOKING FORWARD TO YOUR REPLIES. WILL START THE BUILD ON MONDAY. GET BACK WITH YOU ON FRIDAY.
Part Number:AWR1642BOOST-ODS
Tool/software: Code Composer Studio
Hello everyone. I am using AWR1642BOOST. I've written a simple code for working with arm core. According to the mmwave sdk user guide:
"Application should call init APIs for the following system modules (ESM, SOC, Pinmux) to enable correct operation of the device".
"ESM_init should be the first function that is called by the application in its main()."
So based on these hints, I've called first ESM_init(0), but the error below appears in CCS (Code Composer Studio 8.2.0):
Description Resource Path Location Type
unresolved symbol ESM_init, first referenced in ./hello.obj AWR1642_EM_test1 C/C++ Problem
Also I should mention that I've added related header file, "#include <ti/drivers/esm/esm.h>" in my code and the directory "F:\ti\mmwave_sdk_02_01_00_04\packages" as the search path to "Include Options" Arm Compiler options.
I would be grateful if you could help me to resolve the problem.
Regards.
Part Number:MSP430FR2355
Tool/software: Code Composer Studio
Hello.
I'm working on a code for UART communication on MSP430FR2355. To check the data changing dynamically, i"m using a Hardware breakpoint with configuration "Refresh all windows".
I'm confused with the exact time to apply the breakpoint:
1.When i have written the program
2.When i have burnt/debugged the program on mirocontroller.
3.When i have Run the program after burning.
Please tell me when to apply breakpoint so that it works and doesn't throws any error.
Thanks in advance.
Part Number:MSP430G2744
Hi Sir,
May I learn from you does MSP430G2x44 series have larger RAM? like 2KB or 4 KB.
If not, could you advice a solution which have similar function but larger RAM?
Thank you for your kindly help.
Edward Chen
Part Number:PROCESSOR-SDK-AM437X
Tool/software: Linux
Hi,
I define a fpga_load node in device tree(am437x-gp-evm.dts file):
FPGA_Load_pins: FPGA_Load {
compatible = "fpgaload";
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_fpga_load>;
pinctrl-1 = <&pinctrl_fpga_sleep>;
fpga,nSTATUS = <&gpio5 8 GPIO_ACTIVE_HIGH>;
fpga,nDCLK = <&gpio5 9 GPIO_ACTIVE_HIGH>;
fpga,DATA0 = <&gpio5 10 GPIO_ACTIVE_HIGH>;
fpga,nCONFIG= <&gpio5 11 GPIO_ACTIVE_HIGH>;
fpga,CONFIG_DONE= <&gpio5 13 GPIO_ACTIVE_HIGH>;
fpga,RESET=<&gpio5 6 GPIO_ACTIVE_LOW>;
};
in the driver program(fpgaload.c), when probe, I get gpio number with function of_get_named_gpio( node,"fpga,nSTATUS",0), the function return -2. I try gpio_request( 5*32+8,"nSTATUS") ,it is also return fail with -517. I check the .dts file and cann't find problem. I attach the dts and driver program here. Is there a wrong in driver program or error(s) in the .dts file?
Best Regards,
(Please visit the site to view this file)(Please visit the site to view this file)
Part Number:SN74LVC244A
Hello,
The item (as many other items of TI as I've noticed) datasheet declares the following:
"OE should be tied to VCC through a pullup resistor to ensure the high impedance
state during power up or power down; the minimum value of the resistor is determined by the current sinking
capability of the driver."
Is it necessary to connect the OEn to a pullup resistor? it requires some logic to pull it low after power up, which complicates the design.
What voltage value can be generated at the output if don't do so (can it damage the receiver device)?
Thanks,
Max
Part Number:SN74LVC16T245
Hello,
The Item datasheet doesn't mention the output impedance of the driver.
It is common to add a series termination at the output of the transmitter to achieve a total 50ohm, when dealing with relativelly fast signals,
how can I obtain the value?
(Same thing about the SN65LBC175)
Thanks,
Max
Part Number:TLA2024
Hi sir
I used msp430f2001 to control ATL2021, but found that IIC could not communicate. I observed the waveform through an oscilloscope and determined that the device returned a high level.However, there is no problem with my device address and waveform timing sequence. Could you help me analyze the cause of the problem?
I2C configuration is below.
Sleve Addr : 48h (ADDR Pin : GND)
Vdd : 4.0V
I2C BUS Pull-up Resistor : 2.4K Ohm
Part Number:CC1352P
Tool/software: TI-RTOS
Hi,
I need to update the CCFG area from my application and when NVS_write I am getting NVS_STATUS_ERROR.
This actually works fine when I run with the debugger, its only when I run a formal release with my boot loader that this problem occurs.
Also If I burn a version that runs without the bootloader it also works...my bootloader doesn't actually do anything apart from check that my application is valid and jumps to it.
The problem is that the erase works, so my CCFG area becomes default and my application does not boot anymore.
Any ideas?
Part Number:TIDA-00583
Hello Team,,
Please help with the transformer part no or with transformer design details to support customer.
Thanks in advance for the help and support.
Regards, Shinu Mathew.