MC44C401LAC Freescale Semiconductor, MC44C401LAC Datasheet - Page 9

• Manufacturer Part Number: MC44C401LAC
• Description: IC STEREO ENCODER MTS 32-LQFP
• Manufacturer: Freescale Semiconductor
• Type: Audio Encoderr

Specifications of MC44C401LAC

• Applications: Set-Top Boxes, Video Players, Recorders
• Voltage - Supply, Analog: 2.97 V ~ 3.63 V
• Voltage - Supply, Digital: 2.97 V ~ 3.63 V
• Mounting Type: Surface Mount
• Package / Case: 32-LQFP
• For Use With: MC44C401LEVK - KIT EVAL MC44C401L MTS ENCODERMC44C401EVK - KIT EVAL MC44C401 MTS ENCODER

7 Functional Description
The following sections provide brief descriptions of the MC44C401L modules.
7.1 Phase Locked Loop (APLL)
The APLL, shown in Figure 5, locks to the reference frequency of 12 MHz and generates the master clock.
7.2 Sync Separator
The Sync Separator, shown in Figure 6, extracts the composite sync from the incoming composite video signal.
The composite sync is used by the Audio Processor to generate the 15.734 kHz pilot tone and the 31.468 kHz carrier
to modulate the Left-Right channel. The nominal output level of composite video signal sources is 1 V
and the sync amplitude is 0.3 V.
Freescale Semiconductor
CVBS IN
470pF
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
XTALIN
1K
Ref Clk
22pF
Figure 5. APLL and Clock Generator
Oscillator
0.1µF
12MHz
APLL
2M
MTS Stereo Encoder, Rev. 0.5
Figure 6. Sync Separator
XTALOUT
CVBS
1M
22pF
MC44C401L
384 MHz
VCO
÷
Separator
Sync
Generator
MC44C401L
Clock
Processor
Audio
Functional Description
pp
on 75 Ω
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