LM1236 National Semiconductor Corporation, LM1236 Datasheet - Page 25

• Manufacturer Part Number: LM1236
• Description: 150 Mhz I2c Compatible Rgb Preamplifier With Internal 254 Character Osd Rom, 512 Character Ram And 4 Dacs
• Manufacturer: National Semiconductor Corporation

Microcontroller Interface
LM1236 Address Map
CHARACTER ROM
Note that bit 0 of the Character Font Access Register, 0x8402, needs to be set to 0 to read the 2-color fonts. In order to read the
four-color fonts, two complete reads are needed. Set bit 0 of the Character Font Access Register, 0x8402, to a 0 to read the least
significant plane and to a 1 to read the most significant plane.
FIGURE 23. I
FIGURE 24. I
(Continued)
2
2
C Compatible Write Sequence
C Compatible Read Sequence
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