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Part Number: TVP5151
The customer is using TVP5151. The input signal is the PAL video signal and it is one channel.
The attachment is his schematic. When a 27MHZ crystal is connected to 26 pin, the SCLK 9 pin does not have any clock signal output.
The customer said he referred to the datasheet for power on and reset timing.
For the customer's issue, would you provide some suggestions? The customer would like to know how to generate the clock signal of SCLK pin?
Best Wishes, Mickey Zhang Asia Customer Support Center Texas Instruments
You need to connect a crystal across pins XTAL1 & XTAL2.
Alternatively you can connect a clock source to XTAL1 (OSC_IN). See section 3.16 (clock circuits) in the datasheet for full details.
Not sure why you are trying to connect a crystal to pin 26 (AVID).
Also, make sure you enable the clock and data outputs by setting I2C register 0x03 (miscellaneous control register).
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In reply to Steve Clynes:
In reply to Mickey Zhang:
What datasheet are they looking at?
The latest TVP5150AM1 datasheet shows the following...
The customer must connect a clock source, not a crystal if using pin 26. The option for using pin 26 as an input is to allow support for a 3.3V or 1.8V clock source.
If using a crystal then they must use pins 5 and 6 as per the datasheet.
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