STV3550B STMicroelectronics, STV3550B Datasheet - Page 42

• Manufacturer Part Number: STV3550B
• Manufacturer: STMicroelectronics

Specifications of STV3550B

• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Compliant

Graphics functional description
Figure 29. Linked list structure for OSD data
42/145
STOP, if Stop Linked Lists bit is set.
Header 1
Header 2
Header 3
OSDp[31:0]
OSDp[31:0]
Field storage formats
OSD planes can be stored in a field-based format with an OSD top field and an OSD bottom
field, or using a frame-based format.
If the bitmap is stored in frame-based format, it can be read as top and bottom fields using
the pitch function. Using pointers Topp[31:0] and Bottomp[31:0], the top field block and the
bottom field block can be the same (e.g. it can be used for Simple Character mode). In this
case, the data in the Top Field is the same as in the Bottom Field.
Palettep[31:0]
Palette
Palette
Bottomp[31:0]
Bottomp[31:0]
Bottomp[31:0]
Topp[31:0]
Topp[31:0]
First Specification Address register
Topp[31:0]
Palettep[31:0]
OSD1 Bottom Field Block
OSD2 Bottom Field Block
OSD3 Bottom Field Block
OSD1 Top Field Block
OSD2 Top Field Block
OSD3 Top Field Block
Legend:
Topp[31:0]: Top Field Block Pointer of the current OSD region
Bottomp[31:0]: Bottom Field Block Pointer of the current OSD region
OSDp[29:0]: Next OSD region specification pointer
Decoded Image
OSD1
OSD3
OSD2
STV3550