Philips Semiconductors
Product specification
I2C-bus autosync deflection controller for
PC monitors
TDA4856
Vertical and EW adjustments
MGS274
MBG590
handbook, halfpage
handbook, halfpage
I
I
VOUT1
VOUT1
I
I
VOUT2
VOUT2
(1)
1
∆l
∆l
2
(1)
∆I
1
∆I
2
t
t
(1) ∆I1 is the maximum amplitude setting at register VSIZE = 127,
(1) ∆I1 is the maximum amplitude setting at register VSIZE = 127,
register VGAIN = 63, control bit VOVSCN = 0.
register VGAIN = 63, control bit VOVSCN = 0.
∆I
∆I
∆I
VSIZE = 2 × 100% , VSMOD = 2 × 100%
VGAIN = 2 × 100%
------- -------
-------
∆I1 ∆I1
∆I1
Fig.3 Adjustment of vertical size (VSIZE).
Fig.4 Adjustment of vertical size (VGAIN).
MBG594
MBG592
handbook, halfpage
handbook, halfpage
I
I
VOUT1
VOUT1
∆l /∆t
I
I
2
VOUT2
VOUT2
(1)
1
(1)
1
∆l
∆l
∆l
/∆t
2
t
t
(1) ∆I1 is the maximum amplitude setting at register VSIZE = 127
and VLIN = 0%.
(1) ∆I1 is the maximum amplitude setting at register VSIZE = 127
∆I1 – ∆I
and register VGAIN = 63.
VLIN =
2 × 100%
---------------------
∆I1
∆I2 – ∆I
∆I2 – ∆I
VPOS =
1 × 100% , VOFFS =
---------------------
1 × 100%
---------------------
2 × ∆I1
2 × ∆I1
Fig.6 Adjustment of vertical linearity (vertical
S-correction).
Fig.5 Adjustment of vertical position.
1999 Jul 13
27
NXP [ NXP ]
