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Technical Data
MC44C401/D Rev. 0.0 07/2003 MC44C401 MTS Stereo Encoder
MC44C401
Ordering Information
Device MC44C401FA Temp. Range 0C to 70C Package 32TQFP
Contents
1 Features . . . . . . . . . . . . . 1 2 Reference Documentation 2 3 Block Diagrams . . . . . . . 3 4 I/O Description . . . . . . . 5 5 Electrical Specifications 6 6 Package Data . . . . . . . . 8 7 Functional Description 10 8 Calibration . . . . . . . . . . 11
The MC44C401 Multi-Channel Television Sound (MTS) Stereo Encoder is the industry's first, single-chip, CMOS implementation of a Broadcast Television Systems Committee (BTSC)-compatible stereo encoder. The MC44C401 MTS Stereo Encoder is designed for use in set-top boxes, VCRs, DVD players/recorders, game stations, and other applications that are required to output high-quality stereo sound through a single RF coaxial cable. The digital audio processing used in the MC44C401 preserves the full fidelity of surround sound and other audio coding schemes while ensuring overall system performance is not impacted by copy protection technologies. The MC44C401 is engineered to process right and left analog audio signals and baseband composite video to generate a stereophonic composite signal in accordance with BTSC system standards. The MC44C401 is designed to output this signal to a Motorola RF modulator, which in turn produces a stereo encoded RF channel for use with any BTSC stereo television receiver.
1 Features
* * * * Integrated A/D input and D/A output circuitry
CEXTM
digital audio processing encodes and transports stereo signals
Surround sound and MacrovisionTM compatible Extended low frequency response (The MC44C401 frequency response extends below 25 Hz)
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. (c) Motorola, Inc., 2002, 2003. All rights reserved.
Reference Documentation
* * * * *
Simple passive interface to Motorola's MC44BC374 (UHF/VHF) and MC44BC375 (VHF) modulators Preservation of original surround sound fidelity System performance not impacted by copy protection technologies Enables lower system component count, smaller board size, and significantly lower overall system cost Eliminates manual alignment of filters, phase controls, and composite signal amplitude
2 Reference Documentation
"Multichannel Television Sound Transmission and Audio Processing Requirements for the BTSC System", FCC OET Bulletin No. 60, February 1986.
2
MC44C401 Technical Data
MOTOROLA
Block Diagrams
3 Block Diagrams
MC44C401
APLLVDD 30 XTALIN XTALOUT APLLVSS
28 27 Osc 29
4 MHz
22 CLK4MHZ
APLL
Clock Generator
ADCVDD VINLP VINLM
7 2 3
ADC
DAC
11 DACVDD 15 DOLPRP 14 DOLPRM 13 DOLMRP
VREFP VAGO VREFM
4 6 5
V-REF
DAC
12 DOLMRM 16 DACVSS
26 DVSS
VINRP VINRM
9 10
ADC
25 OVDD 24 DVSS 21 DVDD 20 DVSS 19 DVSS
ADCVSS
8
CVBS
1
Sync Separator Audio Processor
18 DVSS
23 NC SSVDD SSVSS
31 32
Sync Separator Ref
17 VID_PRES
Figure 1. MC44C401 Block Diagram
MOTOROLA
MC44C401 Technical Data
3
Block Diagrams
0.1F 0.1F 0.1F 0.1F
Vin
3.3V REG 1F 47 1F 3.3V
47 1K
47 1F
510 1F
29
31
APLLVDD 30
DVDD 21
ADCVDD 7
OVDD 25
APLLVSS
1F LEFT IN RIGHT V 2 VINLP 9 VINRP 1F 100K 100K 3
DACVDD
SSVDD
11
IN
VID_PRES 22 DOLMRP 13 560
VID_PRES To Modulator
V
VINLM 10 VINRM 6 VAGO 1F 4 5 0.1F 0.1F VREFP VREFM
DOLMRM 12
560H
1F V
MC44C401
27 XTALOUT
Composite To Modulator
1.2K DOLPRP 15 DOLPRM 14 CLK4MHZ 22 4MHz To Modulator 1000pF 2200pF
8 ADCVSS
DACVSS
24 DVSS 20 DVSS
CVBS IN
V
1 1K 470pF 0.1F 1M
CVBS
19 DVSS 18 DVSS
32
16
26
28 2M
15pF
XTALIN
SSVSS
DVSS
12MHz
15pF
Analog Ground
Digital Ground
Figure 2. MC44C401 Recommended Usage
4
MC44C401 Technical Data
MOTOROLA
I/O Description
4 I/O Description
4.1 Signal List
The Stereo Modulator I/O signals are described in Table 1.
Table 1. MC44C401 Signal Descriptions
Signal Analog VINLP VINLM VREFP VAGO VREFM VINRP VINRM CVBS Digital DOLPRP DOLPRM DOLMRP DOLMRM VID_PRES Clocks XTALIN XTALOUT CLK4MHZ Power Supply APLLVDD APLLVSS SSVDD SSVSS 30 29 31 32 APLL analog supply voltage, 1.8 V APLL analog ground Sync Separator analog supply voltage, 3.3 V Sync Separator analog ground 28 27 22 Crystal input Crystal output 4 MHz clock for Audio/Video modulator IC 15 14 13 12 17 Left+Right channel output voltage plus Left+Right channel output voltage minus Left-Right channel output voltage plus Left-Right channel output voltage minus Video present flag, 0 = no video, hi-z = video present 2 3 4 6 5 9 10 1 Left channel input voltage plus Left channel input voltage minus Left & Right ADC ref. input voltage plus Left & Right ADC analog virtual ground Left Right ADC ref. input voltage minus Right channel input voltage plus Right channel input voltage minus Composite video input Pin # Description
MOTOROLA
MC44C401 Technical Data
5
Electrical Specifications Table 1. MC44C401 Signal Descriptions (Continued)
Signal ADCVDD ADCVSS DACVDD DACVSS DVDD Pin # 7 8 11 16 21 18, 19, 20, 24, 26 25 Description ADC analog supply voltage, 3.3 V ADC analog ground DAC I/O supply voltage, 3.3 V DAC I/O ground Digital Logic supply voltage, 1.8 V
DVSS
Digital Logic/I/O ground
OVDD
I/O supply voltage, 3.3 V
5 Electrical Specifications
5.1 DC Characteristics
Table 2. MC44C401 DC Characteristics (Preliminary)
PIN DVDD DVDD OVDD OVDD DACVDD DACVDD ADCVDD ADCVDD SSVDD SSVDD APLLVDD APLLVDD VREFP VREFM VAGO Symbol Parameter 1.8V Digital Logic 1.8V Digital Logic 3.3V Digital Output 3.3V Digital Output 3.3V DAC Supply 3.3V DAC Supply 3.3V ADC Supply 3.3V ADC Supply 3.3V Sync. Sep Supply 3.3V Sync. Sep Supply 1.8V APLL Supply 1.8V APLL Supply Voltage Ref. Bypass plus Voltage Ref. Bypass minus Voltage Ref. Ground 1.62 2.97 2.97 2.97 2.97 Min 1.62 Typ 1.80 18.0 3.30 2.0 3.30 7.0 3.30 7.0 3.3 2.0 1.8 3.0 2.0 1.0 1.5 1.98 Max 1.98 22.0 3.63 8.0 3.63 9.0 3.63 9.0 3.63 Unit V mA V mA V mA V mA V mA V mA V V V
6
MC44C401 Technical Data
MOTOROLA
Electrical Specifications Table 2. MC44C401 DC Characteristics (Continued)(Preliminary)
PIN VINXX VINXX CVBS CLK4MHZ CLK4MHZ DOLPRP DOLPRP a. b. Vol Voh Vola Vohb Symbol Vil Vih Signal Input Signal Input Video input (See Figure 2) 4MHz Clock Output @ I =.6 mA 4MHz Clock Output @ I =.6 mA Output Left-plus-Right plus Output Left-plus-Right plus 2.2 2.2 2.97 3.63 Parameter Min VREFM VREFM 1 Typ Max VREFP VREFP Unit V V Vpp V V Vpp Vpp
Vol is measured at Iload= 6 mA (see test circuit Figure 2) Voh is measured at Iload= 6 mA (see test circuit Figure 2)
5.2 AC Characteristics
Table 3. MC44C401 AC Characteristics (Preliminary) (See Figure 2)
SIGNALS LEFT/RIGHT IN COMPOSITE COMPOSITE COMPOSITE COMPOSITE CVBS IN CVBS Zin Stereo Separation 500Hz - 5KHz Stereo Separation 100Hz - 10KHz a. b. See Figure 2 for test setup Test conditions 1KHz 0db 20 -10 Symbol Input Level Composite output Levelb SNR THD -1 db Bandwidth 20 0.5 2.2 65 75 1 13000 2.0 Parametera Min Typ Max 1.0 Unit Vpp Vpp dB % Hz V dB dB
MOTOROLA
MC44C401 Technical Data
7
Package Data
6 Package Data
6.1 MC44C401 Package
The MC44C401 pin-outs (32TQFP package) are shown in Figure 3.
XTALOUT APLLVDD APLLVSS XTALIN SSVSS SSVDD
CVBS VINLP PIN 1 VINLM VREFP VREFM VAGO ADCVDD
9
ORIENTATION MARK
25
OVDD
DVSS
DVSS NC CLK4MHZ
Motorola MC44C401
DVDD DVSS DVSS
17
DVSS VID_PRES
ADCVSS
DACVDD
DOLMRM
VINRP
VINRM
DOLMRP
DOLPRM
Figure 3. MC44C401 32TQFP Package
8
MC44C401 Technical Data
DACVSS
DOLPRP
MOTOROLA
Package Data
6.2 Mechanical Data
1. 2. 3. 4. 5.
6.
7. 8.
NOTES: DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. CONTROLLING DIMENSION: MILLIMETER. DATUM PLANE A, B AND D TO BE DETERMINED AT DATUM PLANE H. DIMENSIONS D AND E TO BE DETERMINED AT SEATING PLANE C. DIMENSIONS b DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL NOT CAUSE THE LEAD WIDTH TO EXCEED THE MAXIMUM b DIMENSION BY MORE THEN 0.08 MM. DAMBAR CANNOT BE LOCATED ON THE LOWER RADIUS OR THE FOOT. MINIMUM SPACE BETWEEN PROTRUSION AND ADJACENT LEAD OR PROTURSION: 0.07 MM. DIMENSIONS D1 AND E1 DO NOT INCLUDE MOLD PROTRUSION. ALLOWABLE PROTRUSION IS 0.25 MM PER SIDE. D1 AND E1 ARE MAXIMUM PLASTIC BODY SIZE DIMENSIONS INCLUDING MOLD MISMATCH. EXACT SHAPE OF EACH CORNER IS OPTIONAL. THESE DIMENSIONS APPLY TO THE FLAT SECTION OF THE LEAD BETWEEN 0.1 MM AND 0.25 MM FROM THE LEAD TIP.
DIM A A1 A2 b b1 c c1 D D1 e E E1 L L1 O O1 R1 R2 S
MILLIMETERS MIN MAX 1.40 1.60 0.15 0.05 1.45 1.35 0.45 0.30 0.30 0.40 0.09 0.20 0.09 0.16 9.00 BSC 7.00 BSC 0.80 BSC 9.00 BSC 7.00 BSC 0.50 0.70 1.00 REF x 0 7x 12 x REF 0.08 0.20 0.08 -0.20 REF
Figure 4. Package Mechanical Information
MOTOROLA
MC44C401 Technical Data
9
Functional Description
7 Functional Description
The following sections provide brief descriptions of the MC44C401 modules.
7.1 Phase Locked Loop (APLL)
The APLL locks to the reference frequency of 12 MHz and generates the master clock.
MC44C401
APLL VCO Ref Clk Oscillator XTALIN
12MHz
Clock Generator
XTALOUT
15pF
2M
15pF
Figure 5. APLL and Clock Generator
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 Vpp on 75 and the sync amplitude is 0.2857 V.
MC44C401
CVBS IN
1K 470pF 0.1F
CVBS Sync Separator
1M
Audio Processor
Figure 6. Sync Separator
10
MC44C401 Technical Data
MOTOROLA
Calibration
8 Calibration
The following sections show methods for setting various output levels for optimum system performance.
8.1 Modulator Sensitivity
Composite Video
Audio Precision SYS2
Audio Generator Audio Spectrum Analyzer
1.2K
Left In Right In
Stereo Encoder
DOLPRP
DOLMRP
470 500
Audio Analyzer
LPF
Disconnect Stereo Encoder, Inject 10395Hz here, Adjust level for Bessel null on spectrum Analyzer Measure Bessel Null Here Modulator
Measure Level With Audio Spectrum Analyzer Here
Spectrum Analyzer
Precision Receiver
TEK TV1350
Precision MTS Decoder
Modulation Sciences SRD1
Wide Band Output
Cross Check that Deviation Meter reads 25KHz Deviation
Measure Modulator Sensitivity
Figure 7. Measuring Modulator Sensitivity
MOTOROLA
MC44C401 Technical Data
11
Calibration
8.2 Setting Output Levels
Inject 300Hz 995Mv signal on Both Channels Composite Video
Audio Precision SYS2
Audio Generator Audio Spectrum Analyzer
1.2K
Left In Right In
Stereo Encoder
DOLPRP
DOLMRP
470 500
Audio Analyzer
Measure 300Hz Level on Spectrum with Both Channels Driven, Must Equal level measured from Bessel null Calibration
LPF
Adjust to Achieve same level as 25 KHz deviation calibration as measured on Audio Spectrum
Modulator
Spectrum Analyzer
Precision Receiver
TEK TV1350
Precision MTS Decoder This will indicate more than 25KHz deviation due to Pilot adding to total signal
Modulation Sciences SRD1
Wide Band Output
Set Output Level
Figure 8. Setting Output Levels
12
MC44C401 Technical Data
MOTOROLA
Calibration
8.3 Setting Sum/Difference Channels
Inject 1000Hz 995Mv signal on One Channel
Composite Video
Audio Precision SYS2
Audio Generator Audio Spectrum Analyzer
1.2K
Left In Right In
Stereo Encoder
DOLPRP
DOLMRP
470 500
Audio Analyzer
LPF
Adjust to Optimize stereo Separation measured on audio analyzer
Modulator
Spectrum Analyzer
Precision Receiver
TEK TV1350
Precision MTS Decoder
Modulation Sciences SRD1
Wide Band Output
This will indicate more than 35KHz deviation due to Pilot and Difference signals adding to total
Set Sum/Difference Channel Balance
Figure 9. Setting Sum/Difference Channel Balance
MOTOROLA
MC44C401 Technical Data
13
HOW TO REACH US: USA/EUROPE/LOCATIONS NOT LISTED: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217 1-303-675-2140 or 1-800-441-2447 JAPAN: Motorola Japan Ltd.; SPS, Technical Information Center, 3-20-1, Minami-Azabu Minato-ku, Tokyo 106-8573 Japan 81-3-3440-3569 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong 852-26668334 TECHNICAL INFORMATION CENTER: 1-800-521-6274 HOME PAGE: http://www.motorola.com/semiconductors
Information in this document is provided solely to enable system and software implementers to use Motorola products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.
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