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OSD Window 0 (bitmap) - could not configure

shp
Prodigy 90 points

Hi! I'm trying to setup OSD Window 0 in the Video Back End of the DM369 processor. But I don't see any presense of the window on the display. Video windows 0 and 1 are configured and displayed normally. Here is my settings for the OSD window 0:

OSDWIN0XP = 384;  // window start position
OSDWIN0YP = 384;  // window start position
OSDWIN0XL = 256;  // window width
OSDWIN0YL = 256;  // window height
OSDWIN0OFST = 256 / 16;

// BMPMDE = 1, input mode = YCbCr data, blending ratio = 7, frame mode, window is active (displayed):
OSDWIN0MD = ((0x01 << 15) | (0x03 << 13) | (0x07 << 3) | (0x01 << 1) | (0x01 << 0));

Also the address of buffer with picture is configured in OSDWIN0OFST, OSDWINADH and OSDWIN0ADL registers.