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Part Number: DLP6500FLQ
Let me talk about DLPC900.
Please let me know frequency of PWM from BLU_LED_PWM,GRN_LED_PWM,RED_LED_PWM.
The modify of duty is described in Table 2-64. LED Driver Current Command Definition of Programmerd Guide.
But I do not see frequency.
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In reply to Hiroyasu Tazawa1:
In reply to Fizix:
Hi, Fizix-sanThank you for your reply !I got upto 18kHz of PWM frequency,But I want to make sure about 1024 steps.I read DLPC900 Programmers Guide.Control of Duty cycle are described in Section 184.108.40.206 LED Driver Current.and It mention that User can control 256 step(8bit).Which is correct ??Please let me know, if I read wrong section for control.Best RegardsHiroyasu
Hi, Fizix-sanThank you for your support !!I got it.Best RegardsHiroyasu
Hello again Hiroyasu-san,
After seeing this message, further digging and consultation with the engineer that designed the firmware revealed that although the default frequency is 18.3 kHz the steps were limited to 256 by increasing the frequency by 4x. This yields 73.2 kHz, so that 1024 steps becomes 1024 ÷ 4 = 256 since the minimum pulse width is 53.3 ns.
There are currently no plans to change or expose the number of steps and expose frequency control, but we are discussing the possibility internally as a result of your inquiry.
I am sorry for the confusion about the firmware implementation.
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