I'm having problems with the Vertical blanking start and stop (18h and 19h) on the TVP5150PBS (ROM Ver 0x02, 0x10).
We have a Pal Video with 288 lines in two half frames.
In standard configuration the tvp5150 delivers us 17 additional lines at the beginning of the frame.
we were trying to move the activ video section with the vertical blanking registers (0x18 and 0x19) with no effect.
as we understand there is a bug in the tvp5150 that prevents the Vertical blanking stop register to work properly.is there another way to adjust the vertical blacking using the Indirect Registers.
we tried to write the registers AVID_FIELD1_START, AVID_FIELD2_START, AVID_FIELD1_STOP, AVID_FIELD2_STOP,
but without further documentation we had no luck.
could you provide us an example or enhanced documentation that enables us to adjust the vertical blanking.
many thanks in advance
First you need to unlock TVP5150 by writing 0x5150 to indirect register 0x2FF. Then set the following registers as you want: (0x329) = 0xxxxx(VSYNC start),(0x32A) = 0xxxxx(VSYNC stop),(0x323) = 0xxxxx(HSYNC start) (0x324) = 0xxxxx(HSYNC stop)
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