I2C Bit Mapping

MC44BS374T1/374T1A Advance Information

WRITE MODE

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

ACK

CA-CHIP ADDRESS

1

1

0

0

1

0

1

0

ACK

C1-High Order Bits

1

0

SO

LOP

PS

X3

X2

0

ACK

C0-Low Order Bits

PWC

OSC

ATT

SFD1

SFD0

0

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 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

ACK

CHIP ADDRESS

1

1

0

0

1

0

1

1

ACK

R-Status Byte

-

-

-

-

-

Y2

Y1

OOR

-

Bit Name

Description

PWC

Peak White Clip enable/disable

OSC

UHF oscillator ON/OFF

ATT

Modulator output attenuated-sound and video modulators ON/OFF

SFD0, 1

Sound subcarrier frequency control bits

SO

Sound Oscillator ON/OFF

LOP

Logic Output Port

PS

Picture-to-sound carrier ratio

TPEN

Test pattern enable-picture and sound

X5…X0

Test mode bits-All bits are 0 for normal operation (see Test Mode tables, page 6 & page 7) except

“OSC” bit (normal mode is “1”)

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

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com