07-08-2019, 11:34 AM
Looking at the TVP5150 data sheet a few thoughts:
Make sure you force it into monochorme.
Possibly force TV/VCR mode to either VCR or TV. Try both
Look at VBKO and other controls in register 03h
Fig 2-8, Config shared pins is worth studying
Bit of a long shot, perhaps V sync info can be force to pass by setting register 07h
Address 0Dh. Consider bypassing much processing. Then doing sync sep on digital data in the FPGA. May also need to paly with cropping at 11h etc
Register 0Fh. Try various settings to attempt to get syncs out.
Address 15h may be able to get something useful in the 656 data stream
If trying to get sense out a vertical blnaking then register 18hand 19h becomes important
May need to force a particualr input standard in register 28h. Probably PAL B etc
Reading registers 84h, 85h may give some useful info
If running autoswitch standards then look at register 8Ch to see what has been detected
Might be able to get something useful out of the programmable interrupts.
Correction: A lot of thoughts and plenty to play with. the answer is likely to be somewhere in that lot.
Make sure you force it into monochorme.
Possibly force TV/VCR mode to either VCR or TV. Try both
Look at VBKO and other controls in register 03h
Fig 2-8, Config shared pins is worth studying
Bit of a long shot, perhaps V sync info can be force to pass by setting register 07h
Address 0Dh. Consider bypassing much processing. Then doing sync sep on digital data in the FPGA. May also need to paly with cropping at 11h etc
Register 0Fh. Try various settings to attempt to get syncs out.
Address 15h may be able to get something useful in the 656 data stream
If trying to get sense out a vertical blnaking then register 18hand 19h becomes important
May need to force a particualr input standard in register 28h. Probably PAL B etc
Reading registers 84h, 85h may give some useful info
If running autoswitch standards then look at register 8Ch to see what has been detected
Might be able to get something useful out of the programmable interrupts.
Correction: A lot of thoughts and plenty to play with. the answer is likely to be somewhere in that lot.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
