MC44BC373/4C Просмотр технического описания (PDF) - Motorola => Freescale

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производитель

MC44BC373/4C

PLL-Tuned UHF and VHF Audio/Video High-Integration Modulator

Motorola => Freescale 

I2C Programming

10 I2C Programming

The following tables list, by category, the bits used to program various parameters of the MC44BS373CA.

10.1 Sound Settings

Table 13 lists the sound settings used.

Table 13. Sound Settings

Bit

SFD 1

SFD0

PS

SO

Value

Setting

Sound Subcarrier Frequency (MHz)

SFD1 SFD0

0

0

4.5

0

1

5.5

1

0

6.0

1

1

6.5

Picture-to-Sound Ratio (dB)

0

12

1

16

Sound Oscillator

0

Sound oscillator on (normal mode)

1

Sound oscillation disabled (oscillator and PLL section bias turned off)

Table 14 lists the video settings used.

Table 14. Video Settings

Bit

Value

Setting

SYSL

PWC

TPEN

System L/BG Selection

0

System B/G enabled, system L disabled (FM sound and negative video

modulation)

1

System L enabled, system B/G disabled (AM sound and positive video modulation)

Peak White Clip

0

Peak white clip on (system B/G)

1

Peak white clip off (system L)

Test Pattern Signal

0

Test pattern signal off (normal operation)

1

Test pattern signal on (picture and sound)

10

MC44BS373CA Data Sheet

MOTOROLA

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