LM1229VEC National Semiconductor, LM1229VEC Datasheet - Page 21

• Manufacturer Part Number: LM1229VEC
• Description: I2C Compatible CMOS TV RGB and Deflection Processor
• Manufacturer: National Semiconductor

Application Register Detail
GREEN Gain Control
Bits 6–0: Sets the gain level of the green video channel. A value of 0x7F generates the maximum green gain. A value of 0x00
BLUE Gain Control
Bits 6–0: Sets the gain level of the blue video channel. A value of 0x7F generates the maximum blue gain. A value of 0x00
CONTRAST Control
Bits 6–0: Sets the contrast level three video channels. A value of 0x7F generates the maximum contrast. A value of 0x00
DAC 1 Control
Bits 7–0: Sets the DAC 1 DC output level at pin 39. A full scale value of 0xFF generates the maximum DC output level. A value
DAC 2 Control
Bits 7–0: Sets the DAC 2 DC output level at pin 38. A full scale value of 0xFF generates the maximum DC output level. A value
DAC 3 Control
Bits 7–0: Sets the DAC 3 DC output level at pin 37. A full scale value of 0xFF generates the maximum DC output level. A value
BRIGHTNESS Control
Bits 7–0: Sets the brightness level of the RGB outputs. A full scale value of 0xFF generates the minimum DC video black level
OFFSET Control
Bits 3–0: Determines the video reference level at the RGB video outputs on pins 57, 58 and 59. A setting of 0xF gives a DC
GLOBAL
Bit 7: When set to 0, the I
Bit 5: When set to 0, the outputs of DACs 1–3 are full scale (0V–4.2V). When this bit is a 1, the output DC range is halved
Register
GLOBAL
GREEN GAIN
BRIGHTNESS
BLUE GAIN
CONTRAST
Register
Register
Register
Register
OFFSET
DAC 1
DAC 2
DAC 3
Register
Register
Register
Register
the auto increment mode, a given register can be updated continuously using an ADDR - DATA - DATA - ... - DATA
transmission sequence.
generates the minimum green gain.
generates the minimum blue gain.
generates the minimum contrast.
of 0x00 generates the minimum DC level.
of 0x00 generates the minimum level.
of 0x00 generates the minimum level.
(darkest). A value of 0x00 generates the maximum DC black level (brightest).
Offset of about 0.5V and 0x0 gives a DC Offset of about 1.4V.
Addr
0x09
Addr
Addr
Addr
Addr
0x04
0x05
0x06
0x08
Addr
0x02
Addr
0x03
Addr
0x01
Addr
0x07
2
C auto increment function is active. When set to a 1, the I
INCR
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
X
Bit 7
Bit 7
Bit 7
X
X
Bit 7
X
Bit 6
X
Bit 6
Bit 6
Bit 6
Bit 6
X
Bit 6
Bit 6
(Continued)
Bit 6
Bit 6
Bit 5
DCF
Bit 5
Bit 5
Bit 5
Bit 5
Bit 5
Bit 5
X
Bit 5
Bit 5
21
Bit 4
VB
Bit 4
Bit 4
Bit 4
Bit 4
Bit 4
BRIGHTNESS[7:0]
Bit 4
X
Bit 4
Bit 4
DAC1[7:0]
DAC2[7:0]
DAC3[7:0]
CONTRAST[6:0]
CLAMP
Bit 3
BGAIN[6:0]
GGAIN[6:0]
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
2
C auto increment function is disabled. In
Bit 2
HB
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
DC_Offset[3:0]
Bit 2
PSAVE
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
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BLANK
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0