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Freescale Semiconductor

11

MC44CC373

WRITE MODE

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

ACK

CA-CHIP ADDRESS

11001

see

Table 9

10

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

C1-High Order Bits

1

AUX

SO

LOP

PS

X3

X2

SYSL

ACK

C0-Low Order Bits

PWC

OSC

ATT

SFD1

SFD0

SREF

X5

X4

ACK

OC1M-High Order Bits

10000

000

ACK

OC1L-Low Order Bits

00000

000

ACK

OC2M-High Order Bits

10000

000

ACK

OC2L-Low Order Bits

00000

0

PW1

PW0

ACK

READ MODE

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

ACK

CHIP ADDRESS

11001

see

Table 9

11

ACK

R-Status Byte

—————

Y2

Y1

OOR

—

Bit Name

Description

AUX

Auxiliary sound input enable/disable.

ATT

Modulator output attenuated-sound and video modulators ON/OFF

LOP

Logic Output Port

N0…N11

UHF frequency programming bits, in steps of 250 kHz

OSC

UHF oscillator ON/OFF

OOR

RF oscillator out-of-frequency range information

PS

Picture-to-sound carrier ratio

PWC

Peak White Clip enable/disable

SFD0, 1

Sound subcarrier frequency control bits

PW0, PW1

Peak White Clip Level. (see Table 20)

SO

Sound Oscillator ON/OFF

SREF

Sound PLL Reference frequency

SYSL

System L enable-selects AM sound and positive video modulation. (MC44CC373/374xxxx only)

TPEN

Test pattern enable-picture and sound

X5…X0

Test mode bits-All bits are 0 for normal operation. (see Table 18)

Y1, Y2

RF oscillator operating range information