MC44BS374CAEF Freescale Semiconductor, MC44BS374CAEF Datasheet - Page 26

• Manufacturer Part Number: MC44BS374CAEF
• Description: IC AUDIO/VIDEO MODULATOR 16-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MC44BS374CAEF

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

High Speed I2C Compatible Bus
After the chip address, two or four data bytes may be received.
The first and third data bytes contain a function bit, which lets the IC distinguish between frequency
information and control information. If the function bit is a logic 1, the two following bytes contain control
information. The first data byte after the chip address, may be byte CO or byte FM. The two bytes of
frequency information are preceded by a logic 0.
16.6 I
The chip address ( I
The incoming information consists of the read mode chip address byte. The device then answers with an
ACK followed by one byte containing three bits of status information. No acknowledge is answered by the
modulator after this byte.
• If three data bytes are received, the third one is ignored.
• If five or more data bytes are received, the fifth and following ones are ignored, and the last ACK
pulse is sent at the end of the fourth data byte.
STA = Start condition
FM = Frequency information, high order bits
C1 = Control information, high order bits
STO = Stop condition
2
C Read Mode Format
2
C ) is:
Table 9. Permitted Data Bytes (Incoming Information)
1 1 0 0 1 0 1 1 (ACK) = $CB ( hex ) in read mode
Freescale Semiconductor, Inc.
For More Information On This Product,
Table 10. Chip Address (I
MC44BS374CA Technical data
Go to: www.freescale.com
CA = Chip Address
FL = Frequency information, low order bits
CO = Control information, low order bits
2
C Read Mode)