I don't understand the SUB Clock Driver circuit on sheet 6 of AFE schematics (Rev. C; Drawing Number 02_051354). Could somebody help me?
What kind of signal (or a level) comes out of SUBOUT (pin 18)? I wasn't able to find anything about this pin in the documentation of MN34906BL. Is this a clock signal generated on the substrate? If so, then why is it going in the transistor pair? What's the purpose of the MOSFET driver (U6) and why is it controlled by ADDI9036? What is the final clock frequency that drives the SUB pins (15 and 16)?
I am planning on using a progressive scan CCD image sensor from Sony. At this point driving the image sensor SUB pin is what bothers me the most. Also, this particular image sensor doesn't have a SUBSW pin (which is controlled by a GPIO on ADDI9036) a opposed to MN34906BL. There's a typical system block diagram on page 18, Figure 11 In the datasheet of ADDI9036. What's behind the SUB DRIVER block?