TPU 3035, TPU 3040
PRELIMINARY DATA SHEET
4.3. Display Memory
The TPU 3040 supports a variable number of display
memories, each 4 KByte large. One bank is used to
store the display information of the selected teletext
page. The bank location can be defined with the com-
mand DISPLAY_TTX_POINTER. Other banks can be
used to store any kind of display data in level 1 or level
2 format. Switching between these banks is fast and can
be programmed with the command DISPLAY_POINT-
ER. Bank switching allows generation of OSD menus
without affecting the teletext display.
autoincrement
40 byte level 1
40 byte level 1
40-bit pointer
40-bit pointer
40 byte level 2
40 byte level 2
full row attr.
full row attr.
Row 0
Row 1
Display Bank
Row 46
40 byte level 1
40-bit pointer
40 byte level 2
full row attr.
40 byte level 1
40 byte level 1
40-bit pointer
40-bit pointer
40 byte level 2
40 byte level 2
full row attr.
full row attr.
Row 0
Row 1
TTX Display Bank
Row 25
40 byte level 1
40-bit pointer
40 byte level 2
full row attr.
DRAM
Fig. 4–4: Display Memory Organization
MICRONAS INTERMETALL
27
MICRONAS [ MICRONAS ]
