LM1229VEC National Semiconductor, LM1229VEC Datasheet - Page 24

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

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Application Register Detail
Bits 7–0: Sets the DC level of the vertical ramp that is used to move the picture up and down. In a typical application, a setting
HORIZONTAL SIZE
Bits 6–0: Sets the DC level of the 2nd order waveform (parabola) sent to EW to control horizontal size. In a typical application
PINCUSHION
Bits 6–0: Sets the amplitude of the 2nd order waveform sent to EW for pincushion. A value of 0x00 gives no parabola and a value
TOP CORNER CORRECTION
Bits 5–0: Sets the amplitude of the 4th order waveform sent to EW for top corner correction. A value of 0x3F gives no correction.
BOTTOM CORNER CORRECTION
Bits 5–0: Sets the amplitude of the 4th order waveform sent to EW for bottom corner correction. A value of 0x3F gives no
TRAPEZOIDAL CORRECTION
Bits 5–0: Sets the amount of trapezoid correction. A value of 0x3F gives no correction. A value of 0x00 gives a picture with a
DYNAMIC FOCUS CORRECTION
Bits 5–0: Sets the amplitude of the dynamic focus. A value of 0x00 gives no correction and a value of 0x7F gives the maximum
SYNC POLARITY
Bits 5: When set to a 1, this bit disables the vertical protect function (the power up default). This allows the LM1229 vertical
Bit 4:
Bit 3:
Bit 2:
Bit 1:
Bit 0:
T_CORNER
B_CORNER
DYN_FOCUS
SYNCPOL
Register
Register
Register
Register
HSIZE
Register
Register
TRAP
Register
PIN
section to operate without a vertical flyback input and still keep the RGB outputs operating normally, without blanking
them. This bit must be set to a 0 to enable the vertical protect function.
When this bit is a 0, the VEHT2 compensation is functional. When this bit is a 1, the VEHT2 compensation is disabled.
When this bit is a 0, the VEHT1 compensation is functional. When this bit is a 1, the VEHT1 compensation is disabled.
When this bit is set to a 0, the vertical output ramp is active. When set to a 1, the ramp is turned off (set to the vertical
DC reference) to produce the service line used for color temperature setup.
When this bit is set to a 0, the LM1229 expects negative going vertical sync input. When this bit is a 1, it expects positive
going sync.
When this bit is set to a 0, the LM1229 expects negative going horizontal sync input. When this bit is a 1, it expects
positive going sync.
of 0xFF will move the raster image to the lowest position and 0x00 moves it to the highest position.
a setting of 0x7F produces minimum width and 0x00 produces maximum width.
of 0x7F gives the maximum amount of correction.
A value of 0x00 gives maximum top width and 0x7F gives minimum top width.
correction. A value of 0x00 gives maximum bottom width and 0x7F gives minimum bottom width.
narrow top and 0x7F gives a picture with a wide top.
correction.
Addr
Addr
Addr
0x4A
0x4B
0x4E
Addr
0x50
Addr
0x4C
Addr
0x4D
Addr
0x4F
Bit 7
Bit 7
Bit 7
Bit 7
X
X
X
X
Bit 7
Bit 7
Bit 7
X
X
X
Bit 6
Bit 6
Bit 6
Bit 6
X
Bit 6
Bit 6
(Continued)
Bit 6
Bit 5
VPD
Bit 5
Bit 5
Bit 5
Bit 5
Bit 5
Bit 5
24
Bit 4
V2D
Bit 4
Bit 4
Bit 4
Bit 4
Bit 4
Bit 4
DYN_FOCUS[6:0]
T_CORNER[6:0]
B_CORNER[6:0]
HSIZE[6:0]
TRAP[6:0]
PIN[6:0]
Bit 3
V1D
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
SERV
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
VPOL
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
HPOL
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0