MOTOROLA MC44BC373, MC44BC374 User Manual

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Technical Data

MC44BC373/374 Rev. 3.5, 7/2003

Freescale Semiconductor, Inc.

MC44BC373/374 Multi-Standard or PAL/ NTSC Modulator with integrated antenna booster/splitter ICs

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Contents

1 Features . . . . . . . . . . . . . 2

2 Device Overview . . . . . . 3

3 Maximum Ratings . . . . . 5

4 Electrostatic Discharge 5 5Electrical

Characteristics 5

C Bit Mapping . . . . . . . 6

C Programming . . . . . 7

8 Modulator High

Frequency

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Characteristics 9 9 Video Characteristics . 10 10 Audio Characteristics . 11 11 Antenna Booster/Splitter

Characteristics 12 12 Modulator Operation . 14 13 High-Speed I

Compatible Bus 18 14 Application and

Case Diagrams 21

MC44BC373/374

TSSOP 24 Package

Ordering Information

Device Temp Range Package

MC44BC373DTB,R2 MC44BC374DTB,R2

NOTE: For tape and reel, add R2 suffix.

These modulator ICs are for use in VCRs, games, set-top boxes, and similar devices. Figure 1 shows the pin connections.

SCL

SDA

LOP

XTAL

GND

ANT1

ANT2

GND

PREEM

AUDIO

SPLFLT

AUXIN

GNDD

VCCD

PLLFLT

TVOVCC

TVOUT

GND

VCRTU

VCRVCC

VCCA

VIDEO

VCCI

–10

C to +80oC

TSSOP24

Figure 1. MC44BC373/374 Pin Connections

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Features

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1 Features

MC44BC373: Multi-Standard PAL/SECAM/NTSC with integrated booster splitter MC44BC374: PAL/NTSC with integrated booster splitter

The channel is set by an on-chip high-speed I the modula tor o v er th e full UHF range. The modulator incorporates a sound subcarrier oscillator and uses a second PLL to derive 4.5, 5.5, 6.0, and 6.5MHz subcarrier frequencies. These frequencies are selected using the bus.

The picture-to-sou nd ratio is adjus ted using the bu s. In addi tion, an on-chip v ideo test patter n generat or can be switched ON using a 1kHz audio test signal.

Along with the modulator functions, an Antenna Booster/Splitter function is included. These modulator versions are comple tely pin-to-pin and software compatible and all versions have the

following fe atures.

• No external varicaps diodes /inductors or tuned components

C compatible bus receiver. A Phase-Locked Loop (PLL) tunes

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• Channel 21–69 UHF operation

• VHF range possible by internal dividers (30MHz to 450MHz)

• Integrated on-chip programmable UHF oscillator

• Extremely low external component count

• High-speed read and write I

• Fixed video modulation depth (80% in PAL and 90% in SECAM)

• Peak White Clip disabled using the bus

• Programmable picture/sound carrier ratio (12dB and 16dB)

• Integrated on-chip programmable sound subcarrier oscillator

(4.5MHz to 6.5MHz)—No external varicaps

• On-chip video test pattern generator with sound test signal (1kHz)

• Low-power programmable modulator standby mode (booster active)

• Transient output inhibit during PLL Lock-up at Power-ON

• Logical Output Port controlled by bus

• Integrated Antenna Booster/Splitter (40MHz to 860MHz)

• Custom masked versions with unique start-up settings possible

C bus programming required)

(no I

C-bus compatible (800kHz)

• Extremely robust ESD protection, minimum 4kV, typical 6kV

2 MC44BC373/374 Technical Data MOTOROLA

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2 Device Overview

Figure 2 shows a simplified block diagram of the MC44BC373/4 device. The MC44BC373/374 device contains four main sections:

Device Overview

1. A high-speed I

2. A PLL section — Synthesizes the UHF/VHF output channel frequency (from an integrat ed UHF oscillator, divided for VHF output).

3. A modulator section — Accepts audio and video inputs and then uses those inputs to modulate the UHF/VHF carrier.

4. An Antenna Booster/Splitter — Am plifies and splits the antenna signal into two signals: a) The modulated signal is added to the amplified antenna signal on the TVOUT pin. a)

The following items are programmable using the high-speed I

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• Channel frequency

• Sound frequency

• Sound/picture carrier ratio

An on-chip video test pattern generator with an audio test signal is included. The MC44BC373 operates as a multi-standard modulator and can handle the following systems using the

same external circuit components:

•B/G

•I

•D/K

•H

•L

•M/N

The high frequency BiCMOS technology permits integration of the following functions:

• Antenna Booster/Splitter

• UHF tank circuit and certain filtering

C-compatible bus section.

C compatible bus:

Frees

MOTOROLA MC44BC373/374 Technical Data 3

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Device Overview

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LOP VIDEO SPLLFLT

AUDIO

SECTION

MODULATOR

Clamp

kHz

31.25

Peak

White

L/BG

Video

C BUS

BST

SECTION

Modulator

Ω

Sound

PREEM

Audio

Amplifier

and FM

Oscillator

PFD

Sound

L/BG

Modulator

Prog

LPF

I2C BUS

Ω

ALCLPF

Divider

C BUS

LPF

VCCA

4dB

L/BG

AM Modulator

Sound

AUX IN

31.25kHz

C BUS I

23 24

XTALPLLFLTGNDDVCCD

XCO

4MHz

/128

Ref Divider

VCO and PLL SECTION

PLL

UHF OSC

VHF Dividers

Modulator

C BUS

BUS SECTION

High-Speed

Comp

Phase

Prog

Divider

Prescaler/ 8

C Bus

Receiver

GND

Figure 2. Simplified Block Diagram—MC44BC373 / 374

4 MC44BC373/374 Technical Data MOTOROLA

VCCI

TVOUT

TVOVCC

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VCRTU

ANT2

ANT1

SCL

SDA

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Maximum Ratings

3 Maximum Ratings

Sym Parameter Value Unit

Vcc1 Supply Voltage 6 V

Tamin Minimum Operating Ambient Temperature –10

Tamax Maximum Operating Ambient Temperature 75

Tstgmin Minimum Storage Temperature –65

Tstgmax Maximum Storage Temperature 150

This device contains protection circuitry to guard against damage due to high static voltage or electric fields. However, precautions must be taken to avoid applications of any

voltage higher than maximum rated voltages to this high impedance circuit. For proper

operation, input and output voltages should be constrained to the ranges indicated in the

Recommended Operating Conditions.

Maximum ratings are those values beyond which damage to the device may occur. For functional operation, voltage should be restricted to the Recommended Operating Condition.

4 Electrostatic Discharge

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Sym Parameter Min Typ Unit

ESD HBM (Human Body Model)—MIL-STD-883C, Method 3015-7 4000 6000 V

5 Electrical Characteristics

• A = 100% Tested

• B = 100% Correlation tested

• C = Characterized on samples

• D = Design parameter

5.1 Specification Conditions

Unless otherwise stated: Vcc=5.0V, Ambient Temperature=25oC, Video Input 1V grayscale. RF inputs/outputs into 75Ohm load. SPECIFICATIONS ONLY VALID FOR ENVELOPE DEMODULATION.

Parameter Min Typ Max Unit Notes Type

Operating supply voltage range 4.55.05.5V B

Total supply current 65 75 88 All sections active A

Total standby mode supply current 26 34 40 mA

Test pattern sync pulse width 3 4.76.5 µSB

Sound comparator charge pump current

During locking When locked

RF comparator charge pump current 60 100 150 µAA

Crystal oscillator stability-negative resistance 1 ——KΩ D

Logic Output Port

Saturation voltage at I=2 mA Leakage current

10112

0.7

——160—3001mV

1.5µAµA

OSC, SO, ATT= 1 Bus Section active

µA

, 10-step

p-p

A A

MOTOROLA MC44BC373/374 Technical Data 5

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C Bit Mapping

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6 I2C Bit Mapping

WRITE MODE Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ACK

CA-CHIP ADDRESS 11001010ACK

C1-High Order Bits 1 AUX SO LOP PS X3 X2 SYSL ACK

C0-Low Order Bits PWC OSC ATT SFD1 SFD0 TB1 X5 X4 ACK

FM-High Order Bits 0 TPEN N11 N10 N9 N8 N7 N6 ACK

FL-Low Order Bits N5 N4 N3 N2 N1 N0 X1 X0 ACK

READ MODE Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0ACK

CHIP ADDRESS 11001011ACK

R-Status Byte —————Y2 Y1 OOR —

Bit Name Description

PWC Peak White Clip enable / disable.

OSC UHF oscillator ON/OFF.

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ATT Modulator output attenuated-sound and video modulators ON/OFF.

SFD0, 1 Sound subcarrier frequency control bits.

TB1 Test mode bit—bus format compatible with MC44353.

AUX Auxiliary sound input enable/disable.

SO Sound Oscillator ON/OFF.

LOP Logic Output Port.

PS Picture-to-Sound carrier ratio.

SYSL System L enable—selects AM sound and positive video modulation ( MC44BC373/ only).

TPEN Test pattern enable—picture and sound.

X5…X0 Test mode bits—All bits are 0 for normal operation (see Test Mode tables, page 7 & page 8).

N0…N11 UHF frequency programming bits, in steps of 250kHz.

OOR RF oscillator out-of-frequency range information.

Y1, Y2 RF oscillator operating range information.

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6 MC44BC373/374 Technical Data MOTOROLA

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7 I2C Programming

I2C Programming

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Sound

SFD1 SFD0 Sound Subcarrier Freq (MHz)

00 4.5

01 5.5

10 6.0

11 6.5

PS Picture-to-Sound Ratio (dB)

012

116

UHF

OSC UHF Oscillator

0 Normal operation.

UHF oscillator disabled ( oscillator and PLL

sections bias turned OFF ).

ATT Modulator Output Attenuation

0 Normal operation.

Modulator output attenuation (sound and

video modulators sections bias turned OFF ).

Standby Mode

SO Sound Oscillator

0 Sound oscillator ON (normal mode).

Sound oscillation disabled (oscillator and PLL

section bias turned OFF).

AUX Auxiliary Audio Input

0 AUX input disabled (normal mode).

1 AUX input enabled.

OSC SO ATT Combination of 3-bits

111

MC44353/4/5 Compatibility

Video

TB1 Description

SYSL

System B/ G enabled, System L disabled

(FM sound and negative video modulation).

System L enabled, System B / G disabled

(AM sound and positive video modulation).

PWC Peak White Clip

0 Peak White Clip ON (System B/G).

1 Peak White Clip OFF (System L).

TPEN Test Pattern Signal

0 Test pattern signal OFF (normal operation).

System L and B/ G Selection

MC44BC373 only

0 Normal mode (fully programmable).

Limited programmability and compatibility with

MC44353.

Logic Output Port

LOP Description

0 Pin 3 is low voltage.

1 Pin 3 is high impedance.

WRITE MODE: Test Mode 1 and VHF Range

X2 X1 X0 State Description

Modulator standby mode (sound and UHF oscillator, sound and video modulator section bias turned OFF, and I standby mode)—BST is active.

C bus section

0001.a Normal operation.

0011.b RF frequency divided for low frequency testing or VHF range: RF/ 2

0101.cRF/4

0111.dRF/8

1001.eRF/16

1011.f DC drive applied to modulators: non-inverted video at TVOUT.

1101.g DC drive applied to modulators: inverted video at TVOUT.

1111.h Transient output inhibit disabled.

MOTOROLA MC44BC373/374 Technical Data 7

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C Programming

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WRITE MODE: Test Mode 2

X5 X4 X3 State Description

0002.a Normal operation.

0012.b Test pattern generator DC verification (Test pattern DC test mode available).

0102.c

0112.d Reference divider test (UHF reference divider on PLLFILT pin).

1002.e

1012.f

1102.g

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1112.h

Programmable divider test (UHF programmable divider on PLLFILT pin and sound programmable divider on SPLLFIL pin).

UHF phase comparator, upper source on PLLFILT pin. Sound phase comparator 10 µA upper source on SPLLFIL (only valid during Transient Output Inhibit).

UHF phase comparator, lower source on PLLFILT pin. Sound phase comparator 10 µA lower source on SPLLFIL (only valid during Transient Output Inhibit).

Sound phase comparator 1 µA upper source on SPLLFIL (not valid during Transient Output Inhibit).

Sound phase comparator 1 µA lower source on SPLLFIL (not valid during Transient Output Inhibit).

READ MODE

OOR Description

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0 Normal operation, VCO in range.

1 VCO out-of-range.

Y1 Description

0 VCO out-of-range, frequency too low, only valid if OOR=1.

1 VCO out-of-range, frequency too high, only valid if OOR= 1.

Y2 Description

0 High VCO is active.

1 Low VCO is active.

8 MC44BC373/374 Technical Data MOTOROLA

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