LM1237 National Semiconductor Corporation, LM1237 Datasheet - Page 28

• Manufacturer Part Number: LM1237
• Description: 150 Mhz I2c Compatible Rgb Preamplifier With Internal 254 Character Osd And 4 Dacs
• Manufacturer: National Semiconductor Corporation

www.national.com
Display Page RAM
EXAMPLE 3:
Two different length rows of characters a black background are to be displayed on the screen, using 2-color character codes. 3
transparent skipped lines are required between the character rows. This is shown in Figure 23.
Data Sent
0xBA
0xBA
0x0C
0xBA
0x0D
0x0A
0x0A
0x05
0x06
0x07
0x01
0x80
0x00
0x04
0x08
0x80
0x01
0x09
0x01
0x80
0x02
0x00
Character “D”
Character “E”
Character “F”
Row-End (RE) Command
I
I
Chip address (See the Microcontroller Interface Section)
Address LSB
Address MSB
Use Attribute table 0x00 for the following character
Skip 4 lines Command
Character “G”
I
I
Chip address (See the Microcontroller Interface Section)
Address LSB
Address MSB
Use Attribute table 0x01 for the following character
Character “H”
Row-End (RE) Command
I
I
Chip address (See the Microcontroller Interface Section)
Address LSB
Address MSB
Use Attribute table 0x02 for the following character
Character “I”
Window-End (WE) Command
I
2
2
2
2
2
2
2
C stop condition (See the Microcontroller Interface Section)
C start condition (See the Microcontroller Interface Section)
C stop condition (See the Microcontroller Interface Section)
C start condition (See the Microcontroller Interface Section)
C stop condition (See the Microcontroller Interface Section)
C start condition (See the Microcontroller Interface Section)
C stop condition (See the Microcontroller Interface Section)
(Continued)
TABLE 11. Example 2 (Five Sequences) (Continued)
Description
28
RAM Address
0x800C
0x800D
0x800A
0x800B
0x800E
0x8006
0x8007
0x8008
0x8009