MC44BS374T1AEF Freescale, MC44BS374T1AEF Datasheet - Page 23

• Manufacturer Part Number: MC44BS374T1AEF
• Manufacturer: Freescale

Specifications of MC44BS374T1AEF

• Lead Free Status / RoHS Status: Compliant

16.8 Video Section - Peak White Clip
The MC44BS374T1/374T1A requires the following for proper video functionality:
This signal is AC-coupled to the video input where the sync tip level is clamped.
The video signal is then passed to a Peak White Clip (PWC) circuit. The PWC circuit function soft-clips
the top of the video waveform, if the sync tip amplitude to peak white clip goes too high. This avoids
carrier over-modulation by the video. Clipping can be disabled by software.
16.9 Test Pattern Generator
The I
easily tune to the modulator output. The pattern consists of two white vertical bars on a black background
and a 976 Hz audio test signal.
• A composite video input with negative going sync pulses
• A nominal level of 1 Vpp
2
C generates a simple test pattern, which can be switched under bus control to permit a TV receiver to
0
TE1
Freescale Semiconductor, Inc.
MC44BS374T1/374T1A Advance Information
For More Information On This Product,
TE2
10
Figure 8. Test Pattern Generator
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20
24 28
30
TIME IN µS.
40
44
7/10
50
3/10
60
64
Modes of Operation