TDA7439 STMicroelectronics, TDA7439 Datasheet - Page 12

• Manufacturer Part Number: TDA7439
• Description: IC PROCESSOR AUDIO DGTL 30-SDIP
• Manufacturer: STMicroelectronics
• Type: Audio Processorr

Specifications of TDA7439

• Applications: Automotive Systems
• Mounting Type: Through Hole
• Package / Case: 30-SDIP (0.400", 10.16mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8866-5; TDA7439

I
4.6
12/23
2
C bus interface
Figure 12. Timing diagram of the data on the I
Figure 13. Timing diagram of the start/stop
Figure 14. Timing diagram of the acknowledge
Interface protocol
The interface protocol comprises:
"
"
"
"
"
Figure 15. SDA addressing and data
S = Start, ACK = Acknowledge, B = Auto increment, P = Stop
a start condition (S)
a chip-address byte, containing the TDA7439 address
a sub-address byte including an auto address-increment bit
a sequence of data bytes (N bytes + acknowledge)
a stop condition (P).
S
SCL
SDA
SCL
SDA
SDA
SCL
MSB
1
0
CHIP ADDRESS
D96AU420
Start
0
Start
0
1
0
Data stable
when clock high when clock low
MSB
0
1
LSB
0
ACK
MSB
X
2
X
Data can change
SUBADDRESS
X
B
6
DATA
2
LSB
C bus
ACK
7
MSB
DATA 1 to DATA n
Stop
8
DATA
Acknowledge
from receiver
9
LSB
ACK
TDA7439
P