Part Number:TPS22916
Hi
What is the difference between TPS22916BYFPR and TPS22916CYFPR?
Can it be replaced directly, if one of them is out of stock?
Thanks.
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TPS22916: What is the difference between TPS22916BYFPR and TPS22916CYFPR?
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PGA305: Question of EEPROM
Part Number:PGA305
Dear Support team,
Could you please support below my question about EEPROM?
Q1. Please tell me the rewrite life of the built-in EEPROM
Q2. I found EEPROM ARRAY and EEPROM_CACHE in Table 20, datasheet page 53.
Is EEPROM ARRAY mapped with EEPROM Memory Cells in Figure 21?
Is EEPROM_CASHE mapped with EEPROM Cache in Figure 21?
Best Regards,
Hirokazu Takahashi
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CCS/TIDA-00951: SW download for TIDA-00951
Part Number:TIDA-00951
Tool/software: Code Composer Studio
Hi,
I've submitted the request for software download for TIDA-00951 three times, and can't get any ideas from the TI web system. Could I get the software from other appropriate approach or just wait for further feedback?
Thanks
Harvey Wang
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CC3200: Secured Hardware
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CCS/OMAPL138B-EP: OMAPL138
Part Number:OMAPL138B-EP
Tool/software: Code Composer Studio
I have those uart codes, which i could build and debug in the processor, But after debugging when i try to run its not showing any results.
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OPA1602: Opa1602 analog stage
Part Number:OPA1602
Hello ,
I am designing A DAC analog stage using the OPA1602. The IV stage was changed so from my DAC I get a 2.0Vrms. Of course on summing I want to have the same 2.0Vrms output single ended.
Referring to fig 37 from datasheet , I understand that to have unity gain I have to change the R330 to 680. Of course the capacitor C2700pf will change (decrease) and keep the same cutoff frequency
What I don't understand is the R 620 function (see below one function) and how to calculate in function of my feedback capacitor.
One more doubt , you have a 8200pF capacitor across the phases , thats usually for differential noise reduction . Would 2 capacitors in series (mid point going to ground) not be better ? It will take care of both CM and DM noise,, I also understand that last R (620 in your case) is to decouple opamp inputs from that cap.. Still I think that 620R can be lowered to around 100R but I dont know if you have a specific formula to calculate it
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PGA305: DAC gained output pin termination
Part Number:PGA305
Dear Support team,
Please tell me how to handle "OUT" pin when not using DAC output (when using only I2C)
Best Regards,
Hirokazu Takahashi
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CC3220MODA: Certification expired date inside SDK
Part Number:CC3220MODA
Hi,
My customer is asking if TI can extend below certification files’ valid period.
(These file are valid until 2026.)
Under SDK install folder;
\tools\cc32xx_tools\certificate-playground\
dummy-root-ca-cert.der
dummy-trusted-ca-cert.der
dummy-trusted-cert.der
Is it possible?
Thanks and regards,
Koichiro Tashiro
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RTOS/AM6548: How to modify the ospi driver (nor_ospi.c) in order to communicate with qspi device
Part Number:AM6548
Tool/software: TI-RTOS
Hello everyone.
We are using:
- AM654x IDK
- processor_sdk_rtos_am65xx_5_03_00_07
We want to:
- read/write to the ospi flash that is on the eval board (MT35XU512ABA1G12-0SIT) using single I/O instructions (as if the flash were spi one)
- read/write to a qspi flash that is on our custom board
We did:
- started with the sdk example project (C:\ti\processor_sdk_rtos_am65xx_5_03_00_07\demos\rtos_template_app\am65xx\evmAM65xx\A53\template_app\)
- successfully imported ospi test code for am65 (C:\ti\pdk_am65xx_1_0_4\packages\ti\drv\spi\test\ospi_flash\src\main_ospi_flash_test.c)
but we were not able to write to/read from ospi flash in single lane mode.
We believe that driver (C:\ti\pdk_am65xx_1_0_4\packages\ti\board\src\flash\nor\ospi\nor_ospi.c) is made to work only with ospi flash using octal instructions - that is, the driver IS NOT generic.
Questions:
- Should we use ospi driver or qspi driver to communicate with a qspi device connected to the OSPI0 interface of the AM65x processor?
- When will the ospi driver become generic (so that we can communicate with a qspi flash)?
- What kind of changes in driver must someone make, in order to communicate with a qspi device?
- Is it possible to get some example code for AM65xx where a spi or qspi flash is being used?
Thank You very much in advance,
Dusan
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CC2520: how to tuning the transmission power to the maximum
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TPS54560-Q1: High failure rate about TPS54560-Q1 output
Part Number:TPS54560-Q1
My customer use TPS54560-Q1 in their power board. About one-sixth of the defective rate of trial-produced products. The Vin is 12V and the designed output is 5V, but the output is 12V in failure board.
The schematic is as follow:
The fault IC SW-pin wave as follow:
The OK IC SW-pin wave as follow:
Can you help to analyze the issue? thanks!
BRs,
Kun
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Linux/PROCESSOR-SDK-TDAX: From where to download PROCESSOR_SDK_VISION_03_04_00_00 and 03_05_00_00
Part Number:PROCESSOR-SDK-TDAX
Tool/software: Linux
Hi ,
I didn't find any link in TI website to download PROCESSOR_SDK_VISION_03_04_00_00 as well as 03_05_00_00. Can anyone please provide the link or source to download the same.
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CCS/TMS320C6652: SPI boot failure
Part Number:TMS320C6652
Tool/software: Code Composer Studio
Hi,
I 'm trying to boot by SPI from nor flash directly.
This direct SPI firmware worked fine on the C6657EVM, then We created our custom board.
And, I modified this FW for C6652, and could load it with "No Boot" mode, this is working permanently.
Next step, I burned the FW to nor flash on our custom board. I confirmed that correct data were burned on the flash on my FW(using nor flash reading funtion).
I switched boot mode to "SPI Boot" mode, and I confirmed that C6652 was certainly driven as "SPI Boot" mode.
However, C6652 didn't boot. I already checked as follow.
1. "SPI interfaces" signal integrity is good.
2. MISO line seems to receive data from flash device, but CS0 doesn't go up forever.
3. nysh.spi.map configuration is no problem, I think. please confirm the attached.
4. I updated parameter of DDR3 Configuration in the "emif4Cfg" structure. Please confirme the attached.
I don't understand why CS couldn't be going up.
What is the cause?
*c6652_board.c is loaded as board initialization. I recognize that this configuration is same as "emif4cfg". Is It correct?
Best regards,
(Please visit the site to view this file)
(Please visit the site to view this file)
(Please visit the site to view this file)
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LSF0108: LSF0108 slew rate too slow
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PGA305: Confirmation of datasheet descriptions
Part Number:PGA305
Dear Support team,
I would like to confirm the below discription in datahseet.
Q1.
* Table 5: 0x40 / 0x42 / 0x45 when I2CADDR = 0
* Table 6: When I2CADDR = 0, 010010b (0x22), 010101b (0x25)
which one is correct?
Q2. Section 7.3.19.1: GAIN_MSB / LSB
LSB / MID / MSB in Table 20 is same parameter?
Paragraph 7.3.19.1 is missing of MID register
Q3. Section 7.3.19.1: OFFSET_BYTE 1/0
Table 20: OFFSET_LSB / MID / MSB is same thing?
Paragraph 7.3.19.1 is missing of MID register
Q4. Is the register name EEPROM Address = 0x40000048 in Table 20 not PDAC_GAIN_MID but PDAC_OFFSET_MID?
Q5. Table 20 : EEPROM_PAGE_ADDRESS, ADDR [2: 0]
Figure 40 : ADDR [3: 0]
Table 20 is missing ADDR [3].
Which is correct?
Best Regards,
Hirokazu Takahashi
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Linux/BEAGLEBOARD-X15: SPI flash not detected
Part Number:BEAGLEBOARD-X15
Tool/software: Linux
Hi,
I’m trying to communicate with a SPI flash by SPI4 bus on BeagleBoard X15 with embedded am5728.
SPI flash is plugged on these pins:
SPI4_CLK -> P16.09
SPI4_CS0 -> P16.44
SPI4_D0 -> P16.37
SPI4_D1 -> P16.14
I edited Linux device tree located in ti-processor-sdk-linux-am57xx-evm-05.01.00.11/board-support/linux-4.14.67/arch/arm/boot/dts and then I re-built Linux kernel.
Unfortunately, flash module isn’t visible by Linux. What’s the procedure to follow? Is there another file to edit?
Furthermore, I would like to boot on this SPI flash from u-boot. Any idea?
Thank you very much,
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TPS659039-Q1: About the TPS659039 diagnostic function
Part Number:TPS659039-Q1
Q1：
The short-circuit state and thermal state of the TPS659039 can be read directly through the I2C register. Is it necessary to use the INT pins together? why?
Q2:
We want to know the short-circuit and thermal states of each SMPS channel of the TPS659039.
What is the difference between the SOC reading the PMIC Interrupt Status Register (INTx_STATUS) and the Read SMPS_SHORT_STATUS Register and the SMPS_THERMAL_STATUS Register ?
SMPS_SHORT_STATUS Register
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TPS51220A: TPS51220A switch frequency issue
Part Number:TPS51220A
Hi Expert
Could you help to explain when the 24V is used for the input voltage of the TPS51220A, the switching frequency will be reduced to the half-switching frequency setting, is this normal?
Waveform and partial circuit is in attached file.
(Please visit the site to view this file)
Best Regards,
Alex
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PMP8740
Hello Roberto,
How are you
I resumed the testing of battery charger, in that we are facing problem of output voltage regulation after loading. After testing it I come to know that, Output voltage is stable at Vout signal (across C53-C56 capacitor bank) but at connector J8 I got dropped out voltage. So the problem lies in MOSFET bank of Q12, Q17....while fault finding I gave 12V external power supply to VCC_FB, and 3.45V to Pre_charge P2.2 node. I got voltages as below
V_float=8.6V
Pre_chargeP2.2=3.45V
Voltage at Q32A base-Emmiter= 0.6V
Voltage at D19 Anode= 8.15V
because of 8.15V voltage Q33 is not able to Turn ON and hence MOSFET bank.
Is above voltages are correct?
Also which diodes from PMP8740 schematics represents Dsw1 and Dsw2?
Thanks,
Anjana
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TLV320AIC3111: SLAA447 error in matlab code for biquad coefficient calculation
Part Number:TLV320AIC3111
Hi,
I tried calculating the biquad coefficients like suggested in application note SLAA447. I found the following thread about some issues with the matlab code (https://e2e.ti.com/support/audio/f/6/p/656270/2416244).
I fixed the error in the alpha calculation but it seems there is still something wrong. (Q factor seems off compared to the calc with TIBQ)
Can you give me an update on whats still wrong in the matlab code ?
Would appreciate that!
thanks,
Lucas Weidinger
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