TDA7419TR STMicroelectronics, TDA7419TR Datasheet - Page 29

• Manufacturer Part Number: TDA7419TR
• Description: IC PROCESSOR CAR AUD 3BAND 28SOI
• Manufacturer: STMicroelectronics
• Type: Audio Processorr

Specifications of TDA7419TR

• Applications: Radio
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7419
5
5.1
5.1.1
5.1.2
5.1.3
I
Interface protocol
The interface protocol comprises:
●
●
●
●
●
●
●
Receive mode
S = Start
R/W =
ACK = Acknowledge
P = Stop
TS = Testing mode
AZ = AutoZero remain
AI = Auto increment
Transmission mode
SM = Soft-mute activated for main channel
X = Not Used
The transmitted data is automatic updated after each ACK. Transmission can be repeated
without new chip address.
Reset condition
A Power on reset is invoked if the supply voltage is below than 3.5 V. After that the following
data is written automatically into the registers of all subaddresses:
2
S 1 0 0 0 1 0
S
C bus specification
MSB
a start condition (S)
a chip address byte (the LSB determines read/write transmission)
a subaddress byte
a sequence of data (N-bytes + acknowledge)
a stop condition (P)
the max. clock speed is 500 kbits/s
3.3 V logic compatible
1
1
"0" -> Receive Mode (Chip can be programmed by μP)
"1" -> Transmission Mode (Data could be received by μP)
0 0 0 1
1
0 R/W ACK TS AZ AI A4 A3 A2 A1 A0 ACK DATA ACK P
0
0
1
R/W
ACK
1
X
X
1
X
X
1
X
X
I
2
C bus specification
X
1
SM ACK
LSB
0
29/40
P