i just wanted to know if i can sample 2 or more channels. should the fifo size match the number of channels? what is the pin out of this window? (in the since, enable pin 9 is adc1 what is the physical pin on board). likewise i was looking for a table that relates enable pin number to adc number to physical pin on the board.

for example, enable pin 0 is which adc pin (while coding) and which is the physical pin on the boa

↧

UC3842A: UC3842AD8TR review schematic

November 13, 2018, 2:00 am

≫ Next: LDO: input 3.3V, output 1.0V and 2.5V, current needs 150mA, small package like SOT-23

≪ Previous: TMS570LS0432: halcogen help

Part Number:UC3842A

Dear

our client design UC3842AD8TR, we need double confirm schematic as below

(Please visit the site to view this file)

If any suggestion, Please advise me.

Thanks,

Best regards,

Lawrence.

↧

LDO: input 3.3V, output 1.0V and 2.5V, current needs 150mA, small package like SOT-23

November 13, 2018, 2:00 am

≫ Next: Linux/TDA2: build the PSDK by yocto, error:unknown type name 'ucs4_t'

≪ Previous: UC3842A: UC3842AD8TR review schematic

Dears,

Can you recommended me two LDO or a adjustable LDO, input 3.3V, output 1.0V and 2.5V, current needs 150mA, small package like SOT-23

Thank you.

Best regards

↧

Linux/TDA2: build the PSDK by yocto, error:unknown type name 'ucs4_t'

November 13, 2018, 2:02 am

≫ Next: OPA360: Aging test output vedio abnormal

≪ Previous: LDO: input 3.3V, output 1.0V and 2.5V, current needs 150mA, small package like SOT-23

Part Number:TDA2

Tool/software: Linux

Hi TI,

When I use the yocto to build a recipes, I got some error. Like this:

work@ubuntu:~/project/ti-processor-sdk-linux-automotive-dra7xx-evm-03_04_00_03/yocto-layers$ 
work@ubuntu:~/project/ti-processor-sdk-linux-automotive-dra7xx-evm-03_04_00_03/yocto-layers$ 
work@ubuntu:~/project/ti-processor-sdk-linux-automotive-dra7xx-evm-03_04_00_03/yocto-layers$ ./build-specific-recipe.sh dra7xx-evm meta-toolchain-qt5
[PSDKLA]>
[PSDKLA]> Current Directory is /home/work/project/ti-processor-sdk-linux-automotive-dra7xx-evm-03_04_00_03/yocto-layers
[PSDKLA]> PATH is /home/work/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/bin/:/home/work/project/ti-processor-sdk-linux-automotive-dra7xx-evm-03_04_00_03/yocto-layers/sources/oe-core/scripts:/home/work/project/ti-processor-sdk-linux-automotive-dra7xx-evm-03_04_00_03/yocto-layers/sources/bitbake/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
[PSDKLA]> Building on ubuntu running Linux ubuntu 4.4.0-31-generic #50~14.04.1-Ubuntu SMP Wed Jul 13 01:07:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
[PSDKLA]> Starting Yocto build at Tue Nov 13 17:51:43 HKT 2018
[PSDKLA]>
[PSDKLA]> cd build
[PSDKLA]> cp conf/local.conf conf/local.conf.pristine
[PSDKLA]> . conf/setenv
[PSDKLA]> MACHINE=dra7xx-evm bitbake meta-toolchain-qt5
NOTE: Started PRServer with DBfile: /home/work/project/ti-processor-sdk-linux-automotive-dra7xx-evm-03_04_00_03/yocto-layers/build/cache/prserv.sqlite3, IP: 127.0.0.1, PORT: 37152, PID: 34203
Loading cache: 100% |###########################################################################################| ETA:  00:00:00
Loaded 2849 entries from dependency cache.
NOTE: Resolving any missing task queue dependencies

Build Configuration:
BB_VERSION        = "1.30.0"
BUILD_SYS         = "x86_64-linux"
NATIVELSBSTRING   = "Ubuntu-14.04"
TARGET_SYS        = "arm-linux-gnueabi"
MACHINE           = "dra7xx-evm"
DISTRO            = "arago"
DISTRO_VERSION    = "2016.12"
TUNE_FEATURES     = "arm armv7a vfp thumb neon       callconvention-hard"
TARGET_FPU        = "hard"
meta-glsdk        = "HEAD:66cfd8ef55344508d6e7b306259f34c05b828194"
meta-arago-distro 
meta-arago-extras = "HEAD:4c01410ffde8853224567fb6078d7d9f190b942f"
meta-qt5          = "HEAD:f8584d7a7c90afc71484a40279aa3df651d0e04f"
meta-networking   
meta-ruby         
meta-python       
meta-oe           = "HEAD:55c8a76da5dc099a7bc3838495c672140cedb78e"
meta-ti           = "HEAD:5f3a1169d307fec41626f850f5c700437dedbe93"
meta-linaro-toolchain 
meta-optee        = "HEAD:2f51d38048599d9878f149d6d15539fb97603f8f"
meta              = "HEAD:bfa04fa71c47e8fe9528208848cfcec2e232777d"

NOTE: Preparing RunQueue
NOTE: Executing SetScene Tasks
NOTE: Executing RunQueue Tasks
ERROR: nativesdk-gettext-0.19.6-r0 do_compile: oe_runmake failed
ERROR: nativesdk-gettext-0.19.6-r0 do_compile: Function failed: do_compile (log file is located at /home/work/project/ti-processor-sdk-linux-automotive-dra7xx-evm-03_04_00_03/yocto-layers/build/arago-tmp-external-linaro-toolchain/work/x86_64-nativesdk-arago-linux/nativesdk-gettext/0.19.6-r0/temp/log.do_compile.34250)
ERROR: Logfile of failure stored in: /home/work/project/ti-processor-sdk-linux-automotive-dra7xx-evm-03_04_00_03/yocto-layers/build/arago-tmp-external-linaro-toolchain/work/x86_64-nativesdk-arago-linux/nativesdk-gettext/0.19.6-r0/temp/log.do_compile.34250
Log data follows:
| DEBUG: SITE files ['endian-little', 'common-linux', 'common-glibc', 'bit-64', 'x86_64-linux', 'common']
| DEBUG: Executing shell function do_compile

and I got the error messege:

| In file included from ../../../gettext-0.19.6/gettext-tools/gnulib-lib/unilbrk/lbrktables.c:21:0:
| ../../../gettext-0.19.6/gettext-tools/gnulib-lib/unilbrk/lbrktables.h:70:21: error: unknown type name 'ucs4_t'
|  unilbrkprop_lookup (ucs4_t uc)
|                      ^

SO, how can I fix it ?

Thanks!

Regards,

Sam.

↧

OPA360: Aging test output vedio abnormal

November 13, 2018, 2:02 am

≫ Next: CCS/TMS320F28069: Lunch_Pad

≪ Previous: Linux/TDA2: build the PSDK by yocto, error:unknown type name 'ucs4_t'

Part Number:OPA360

Dear TIer,

When we aging test,output vedio is abnormal in different time periods arise.When we touch OPA360,problems will arise.

Just like the picture as below.

We A-B-A swap to test.Problem is still exist.Passing board is still normal.

Abnomal:

Normal：

↧

CCS/TMS320F28069: Lunch_Pad

November 13, 2018, 2:07 am

≫ Next: TPS54231: Enabling the TPS54231

≪ Previous: OPA360: Aging test output vedio abnormal

Part Number:TMS320F28069

Tool/software: Code Composer Studio

Dear All

I am Using a Lunchpad-F28069 Control board with my customized power stage board. I import Lab2a of Motorware software developed by TI group.

In my Power board, I used a ACPL-331J for IGBT driver. This IGBT driver isn't a direct driver. This means that if I set 1 in driver input, I see 0 in out put pin. This is very dangerous when I have 0 on all 6 PWM pin by Micro controller at the start of the test.

For solving this problem I need to change the first state of PWM Pins from 0 to 1. How can i change PMW Pins first state in Lab2a of Motorware.

Thank you for your help.

Rasool

↧

TPS54231: Enabling the TPS54231

November 13, 2018, 2:09 am

≫ Next: TAS5421-Q1: Expected THD driving 15W in a 8ohm load with 18V of power supply

≪ Previous: CCS/TMS320F28069: Lunch_Pad

Part Number:TPS54231

Is it possible to tie the Enable Input of this IC via a 1Mohm resistor so that it power off by default?
And then use a MCU 3.3V push pull to enable it? perhaps via isolation diode? I wish the TPS54231 default to be power off.

In the past we been using a open colllector transistor to turn off the TPS54231 but now i wish to do the opposite.

↧

TAS5421-Q1: Expected THD driving 15W in a 8ohm load with 18V of power supply

November 13, 2018, 2:09 am

≫ Next: RTOS/AM5728: RTOS NDK (TCP/IP)

≪ Previous: TPS54231: Enabling the TPS54231

Part Number:TAS5421-Q1

Dear all,

One of my AA is going to use the TAS5421-Q1 to drive 15W in 8 ohm load. The TAS5421-Q1 will be supplied with 18V.

From voltage output point of view it seems that the TAS5421-Q1 should have the headroom to drive the 8ohm @15W.

Which could be the expected THD+N ? The application require a THD+N less than 1%.

regards,

Domenico

↧

RTOS/AM5728: RTOS NDK (TCP/IP)

November 13, 2018, 2:10 am

≫ Next: CC2650: Does 6LoWPAN have a sleeping mode?

≪ Previous: TAS5421-Q1: Expected THD driving 15W in a 8ohm load with 18V of power supply

Part Number:AM5728

Tool/software: TI-RTOS

Dear Sir or Madam,

My development environment is:

AM5728
we want to use Ethernet for RTOS (DSP1)
NDK
Linux (A15) with own customer device tree

We want to use one Ethernet port for Linux and another one for RTOS

My Questions:

does Linux have to release or set free the ethernet interface for RTOS?
how to activate the NDK in the RTOS (for example with IP address for ping)
are the necessary drivers loaded automatically? do drivers have to be additionally load?
How must NDK be initialized

kind regards

V.Klotz

↧

CC2650: Does 6LoWPAN have a sleeping mode?

November 13, 2018, 2:14 am

≫ Next: TPS65981: About TPS54334 of TPS65981EVM

≪ Previous: RTOS/AM5728: RTOS NDK (TCP/IP)

Part Number:CC2650

Is there a sleeping mode defined for 6LoWPAN in Contiki to achieve low power requirements? If there is such a configuration, is there a way to customize it or not? If there isn't such a sleeping mode, what are the actions taken to achieve the low power requirements in 6LoWPAN along with the contiki?

↧

TPS65981: About TPS54334 of TPS65981EVM

November 13, 2018, 2:14 am

≫ Next: TMS320C6678: Source code

≪ Previous: CC2650: Does 6LoWPAN have a sleeping mode?

Part Number:TPS65981

Hi Team,

Our customer would like to use LM43603.

Therefore, we would like to change form TPS54334 to LM43603 on TPS65981EVM.

I think that it is not a problem because TPS54334 is generic DCDC.

Could you please let us know if you have any concern?

Regards,

Kanemaru

↧

TMS320C6678: Source code

November 13, 2018, 2:16 am

≫ Next: AM6527: A guideline to choose AM6527 or AM6526

≪ Previous: TPS65981: About TPS54334 of TPS65981EVM

Part Number:TMS320C6678

Hi team,

The customer need source code for programming the board, because the customer wants to modify it. But only Factory Image File I2C EERPOM, NOR, and NAND binary images can be found in the http://www2.advantech.com/Support/TI-EVM/6678le_download3.aspx, can we provide source code?

↧

AM6527: A guideline to choose AM6527 or AM6526

November 13, 2018, 2:19 am

≫ Next: CCS/TDA3: Unable to connect EVE core using XDS510 in CCS.

≪ Previous: TMS320C6678: Source code

Part Number:AM6527

Hello,

Can I ask a guideline to choose AM6527 or AM6526 ?
For example, use cases would be highly appreciated.

The Device comparison table in the DS tells:
- AM6527: Single core * 2 clusters
- AM6526: Dual core in the same cluster. The cores share L2 memory.

↧

CCS/TDA3: Unable to connect EVE core using XDS510 in CCS.

November 13, 2018, 2:20 am

≫ Next: TMS320F28069F: Sporadic USB enumeration fails (STALL) after device reset

≪ Previous: AM6527: A guideline to choose AM6527 or AM6526

Part Number:TDA3

Tool/software: Code Composer Studio

Hi,

I'm unable to connect to TDA3x EVE core in CCS using XDS510. CCS showing below error.

But able to connect with XDS200. Does XDS510 require any update?

↧

TMS320F28069F: Sporadic USB enumeration fails (STALL) after device reset

November 13, 2018, 2:23 am

≫ Next: SN74GTL1655: Output Ringing Issue

≪ Previous: CCS/TDA3: Unable to connect EVE core using XDS510 in CCS.

Part Number:TMS320F28069F

Hi,

Since the rise of windows 10 we are increasingly confronted with USB communication errors.That motivated us to migrate to the latest USB stack and rework the communication in general. Our device acts as a generic USB HID device and we use Interrupt Transfer for both IN and OUT endpoints. After some modifications to the library code the communication seems to be stable now with different host systems. So far so good.

The things look different on our integration test system. During a complete run we ge multiple communication errors, everytime after a device reset. The reset is triggered on application layer to get the device in a defined state before a new test case is executed. During a reset, the device is still powered and connected to the USB bus. According to the USB logger, the communication hangs during device enumeration. Sometimes a plugout - plugin of the cable is sufficent to get the communication restored but in rare cases a power cycle is mandatory.

System environment

Generic USB device with interrupt endpoints, based on HID keyboard example
USB library 4.00.00 (C2000Ware 1.00.06.00)
TI-RTOS
Endpoint0 handling is done in HWI while interrupt endpoint handling is forwarded to SWI
Whole project has optimization level 4 (otherwise there's not enough flash memory)
Some modification with compiler switchs were made to further reduce memory footprint (host and OTG stuff removed)

Does anyone have experience with a similar system environment or has stumbled over the same problem? We are grateful for every little tip!

Best regards,
Mathias

↧