STV2050A STMicroelectronics, STV2050A Datasheet - Page 49

• Manufacturer Part Number: STV2050A
• Description: IC DGTL CONVERGENCE PROC 80-PQFP
• Manufacturer: STMicroelectronics
• Type: Videor

Specifications of STV2050A

• Applications: HDTV
• Mounting Type: Surface Mount
• Package / Case: 80-MQFP, 80-PQFP
• Case: QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

– the CDN bit (refer to
During normal operation mode, the convergence outputs deliver a signal computed as shown
in
However, during the convergence frame retrace defined by the DCB and DCT values as de-
scribed in
offset canceller values are output. This is used to reduce the power in the convergence ampli-
fiers.
9.7 MANUFACTURING, AFTER-SALES SERVICE, LAB TRIAL MODES
9.7.1 Output of Field Offset Values
This mode is used to output the field offset values defined in the D2 and D3 registers.
It is controlled by the CDN bit in the E3 register.
9.7.2 Gain and Offset Measuring Line
This mode is used as a manual control of the measuring line used, for example, in the elec-
trical loop. (Refer to
During the gain measuring line:
– The dynamic values are replaced for each channel by the CRH[7:0] and CRV[7:0] bits for
– The polarity of these latter values may be changed using the PMH and PMV bits in the D5
– The gain value is stored in the E0 register for the coarse value, but the fine values are stored
During field offset measuring lines, the value applied to the DACs for each channel are given
by MVR[7:0] for red, MVG[7:0] for green, MVB[7:0] for blue in register E8
The manual measuring line mode is enabled using the MLE bit in the D5 register.
This may be programmed when the measuring line is inserted using the MLN[8:0] bits in the
D5 register.
This signal is made available on pin 75 (MLIN).
AL MODES" on page
red, CGH[7:0] and CGV[7:0] bits for green and CBH[7:0] and CBV[7:0] for blue in the DC and
DD registers for horizontal and vertical values, respectively,
register for horizontal and vertical values, respectively,
in the MVR[7:0] bits for red, MVG[7:0] bits for green and MVB[7:0] bits for blue in the E8 reg-
ister.
Figure 26 "Convergence Values Computation Path" on page
Section 5.4.4 "Convergence Correction Frame Retrace" on page
CDN
MLE
Section 11.1 "PRINCIPLE OF OPERATION" on page
Section 9.7 "MANUFACTURING, AFTER-SALES SERVICE, LAB TRI-
49).
0: Offset values
1: Normal operation
0: Manual measuring line disabled
1: Manual measuring line enabled
STV2050A - CONVERGENCE
45.
55.)
26, only the field
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