TEA5757 Philips Semiconductors (Acquired by NXP), TEA5757 Datasheet - Page 10

• Manufacturer Part Number: TEA5757
• Description: TEA5757; TEA5759; Self Tuned Radio (STR)
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
R
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.
1999 Aug 26
handbook, full pagewidth
handbook, full pagewidth
EADING DATA
Self Tuned Radio (STR)
WRITE-ENABLE
BUS-CLOCK
DATA
WRITE-ENABLE
BUS-CLOCK
DATA
data available after search ready
MSB is LOW
data shift
data change
data shift
Fig.3 Read data.
Fig.4 Write data.
10
W
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.
RITING DATA
data available
data read
TEA5757; TEA5759
Product specification
MBE817
MBE818