TEA5757H Ver la hoja de datos (PDF) - Philips Electronics

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TEA5757H

Self Tuned Radio (STR)

Philips Electronics 

Philips Semiconductors

Self Tuned Radio (STR)

Product specification

TEA5757; TEA5759

READING DATA

While WRITE-ENABLE is LOW data can be read by the

microcontroller. At a rising edge of the BUS-CLOCK, data

is shifted out of the register. This data is available from the

point where the BUS-CLOCK is HIGH until the next rising

edge of the BUS-CLOCK occurs (see Fig.3).

To read the entire shift register 24 clock pulses are

necessary.

WRITING DATA

While WRITE-ENABLE is HIGH the microcontroller can

transmit data to the TEA5757; TEA5759 (hard mute is

active). At a rising edge of the BUS-CLOCK, the register

shifts and accepts one bit into LSB. At clock LOW the

microcontroller writes data (see Fig.4).

To write the entire shift register 25 clock pulses are

necessary.

handbook, full pagewidth

WRITE-ENABLE

BUS-CLOCK

data read

DATA

data available after search ready

MSB is LOW

data shift

Fig.3 Read data.

data available

MBE817

handbook, full pagewidth

WRITE-ENABLE

BUS-CLOCK

DATA

1999 Aug 26

data shift data change

Fig.4 Write data.

10

MBE818

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