AM1808 DDR2 drive strength problem
We use AM1808BZWTD4 with one DDR2 device,16bit, without terminators.The am1808 is running at 432M Hz,and ddr2 is running at 144M HzIf we use normal drive strength, the system can work normally, but the...
View ArticleFor interrupt timing of C6748 VPIF module
Hi,Please tell us about the timing of the frame interrupt C6748 VPIF module. There is a description of the two following 34.2.12.2.1 Interrupt Condition Technical Reference Manual (SPRUH79A). (1) The...
View ArticleL138 EDMA implementetion in sys/bios
Dear collegesI'm try to implement SPI EDMA data receiving ftom external ADC. So, I need to start the transfers by GPIO event.I found SPI EDMA example of psp. But it is example for read/write data...
View ArticlePlease interpret interrupt in EDMA uart API
Hi,I want to use DMA mode with Uart on DSP C674x on L138 LCDK board. I use biospsp_03.00.01.00 package now. On the User Guide Page 32/228, it has the explanation:2.4.5 DMA Interrupt Mode The...
View ArticleAudio noise on OMAP-L137 EVM with PSP driver
I have been working with the audio example from the PSP driver package, with a minimal modification so that it outputs a square wave. The problem is that I see a large amount of noise on the output,...
View ArticleEDMA3 tutorial
I'm new to the OMAP-L138, although I have lots of experience with other TI DSP's and DSP/BIOS. I need to use the EDMA to move some data in my application, so I'm trying to come up to speed to the...
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AM1808 uPP peripheral send wrong data after channel reconfiguration
In our design we use AM1808 and FPGA. FPGA is configured and data are transferred through uPP peripheral. We use Linux as operating system, and uPP driver based on TI's provided BIOS/CSL driver.uPP...
View ArticleOpenOCD on the AM1808
Has anyone had any luck using OpenOCD to do JTAG debugging on the AM1808? OpenOCD comes packaged with a config file for the xds100v2 JTAG adaptor I am using, but none of the board config files look...
View ArticleEncryption
I have a customer asking -Does enabling encryption affect the max speed at which we can run the part? I haven't found any documentation that addresses this question.
View ArticleCONNECT TLV320AIC29 TO OMAPL137
HiI have a new system with omapl137. i used tlv320aic29 in my board. tlv320aic29 connected to omapl137 with spi1 and mcasp1. i attached the shematic.i connected the headphone to (INT_MIC+ and...
View Articlebasic secure omapl138 device encrypts images
HI:There are some problems while we use basic secure omapl138 to encrypt images,and i need confirm some questions first:1. For SecureHexAIS_OMAP-L138.exe tool, dose it encrypt the CEK in the ini file...
View Articlevpif configuration
Hi,From the c6748 TRM, we can find following information.Channel 0 Control Register (C0CTRL) Field DescriptionsCLKEDGE : 0= Data is captured on rising edge of input clock....
View ArticleOMAPL137 RESET CIRCUIT
HiI have a new system with omapl137. i used ambe3000 and tlv320aic29 in my board . tlv320aic29 connected to ambe3000 with spi and ambe3000 connect to omapl137 with mcasp. I need a simple reset circuit....
View ArticleSPI and USB conflict on LCDK
Hi, I add SPI support to LCDK linux kernel, It appears spidev now, but I've got such problem:If I start linux without usb flash ROM, then there is spidev1.0 in /dev, but is no sda1(my flash ROM).If I...
View Article[C674x DSPLIB/MATHLIB] How to track bug fixes among the releases ?
Hi,Question -- How can I track the bug fixes (known issues) of DSPLIB/MATHLIB ? Do you have some lists for that ?I think the answer should be the related release note, but now I'm wondering if that may...
View ArticleTransfer of parallel data from AM1808 with WAIT activated.
Hi All,Have a great day. Subject: Transfer parallel data from AM1808 to customer board with WAIT activated.Board Setup: AM1808 board interfaced with customer board (receiver chip).The setup is AM1808...
View ArticleIssue with AM1808 DDR2
Hi,Our customer is using DDR2 with AM1808,and few of the custom boards has issue(system crash) related to DDR2.They see the data on the DDR changing constantly even when the CPU and clocks are OFF. But...
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Question about EPWM sample project in starterware
dear TI members,i just bought TI LCDK C6748 dev kit and just beginning to develop using TI DSP IC..i load it with Starterware example project of EHRPWM..i successfully build the project and make some...
View Articlebooting flash after reset omapl137
Hi I have a new system with omapl137. I need booting from nandflash when power on my board. i attached the shematic. with this shematic can omapl137 booting from nandflash when power on my board ?I...
View Articleinvalid target error in c674x dsplib
Hi TI,In the latest C674x dsplib, an internal error will lead to build error.In file: C:\ti\dsplib_c674x_3_2_0_1\packages\ti\dsplib\src\DSPF_sp_mat_mul_gemm_cplx\DSPF_sp_mat_mul_gemm_cplx.h#if...
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