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Subject: codec problem ** Proprietary ** Hi When u poweron ur DSP whatever settings is there in the clock mode pins will be written to clock mode registers, if Dip switches 5 & 6 are up then it is true that its register calue becomes 1007 but this value can be changed thru software by writing appropriate values in that register changing it to ur desired value.If u have run the exampled CODEC BIOS program then in the global setting u can find the caule being set for 100mhz. As for the period of the sine wave is considered u are outputing more number of points but fixing the same sampling rate so it will increase the period but the amplitude i have no idea regards vinodh Hello I am trying to work on CODEC. 1. when i tried to run the eg program of codec given by the TI it ran successfuly and i checked out that i am getting a sine wave on pin 23 of TLC320AD50 chip. when i halted the program the CLKMD changes to 4007 which is 100MHZ which should be 1007 i.e 40MHZ because my DIP switches 5 & 6 are up. 2. when i increase the number of points in lookup table(in the eg program the lookup table is 256) like 512,1024,2048,4096 the amplitude of the sine wave goes on decreasing and the period of the sine wave also increases can anyone tell me why? thanks |
RE: codec problem
Started by ●May 18, 2002
