MC44BS374CAEF Freescale Semiconductor, MC44BS374CAEF Datasheet - Page 25

• 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

16.3 Level Definitions
SDA/SCL high and low levels are designed to be compatible with 0-5V and 0-3.3V SDA / SCL signals.
16.4 High Speed I
16.5 I
The bus receiver operates the I
In write mode, each ninth data bit ( bits 9, 18, 27, 36, and 45 ) is an acknowledge bit (ACK) during which
the MCU sends a logic 1 and the Modulator circuit answers on the data line by pulling it low. Besides the
chip address, the circuit needs two or four data bytes for operation. The following sequences of data bytes
are the permitted incoming information:
SDA
SCL
STA
Example 1
Example 2
Example 3
Example 4
Note:
2
C Write Mode Format and Bus Receiver
1
Chip Address ($CA)
2
3
Table 9. Permitted Data Bytes (Incoming Information)
4
1 1 0 0 1 0 1 0 (ACK) = $CA ( hex ) in write mode
Freescale Semiconductor, Inc.
SDA
5
STA
STA
STA
STA
2
For More Information On This Product,
2
C Compatible Bus Format
C compatible data format. The chip address ( I
6
...
Table 8. Chip Address (I
7
MC44BS374CA Technical data
Figure 10. SDA/SCL Levels
Figure 11. I
8
CA
CA
CA
CA
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Vcc
Vil
0V
Vih
ACK
9 10
First Data Byte (C1 or FM)
11 12 13
FM
FM
C1
C1
2
C Bus Timing
C0
C0
14
FL
FL
2
C Bus)
dead band
15
16 17 18
STO
STO
FM
C1
High Speed I2C Compatible Bus
ACK
2
C bus ) is as follows.
19
FL
C0
Data
44
STO
STO
ACK
45
Stop