tda7421n STMicroelectronics, tda7421n Datasheet - Page 23

• Manufacturer Part Number: tda7421n
• Description: Am/fm Tuner For Car Radio And Hi-fi Applications
• Manufacturer: STMicroelectronics

Figure 7. I
5.8 Frame Example
For addressing the PLL part:
for the TUNER part:
ACK:
S:
P:
I:
T2, T1, T0:
A3, A2, A1, A0:
SDA OUT
SDA IN
SCL
S
2
S
C Bus Timing Diagram
MSB
MSB
1
1
t SU-STA
1
1
CHIP ADDRESS
D96AU549
CHIP ADDRESS
D96AU550
Acknowledge
Start
Stop
Page mode
0
used in test mode (for PLL only, for TUNER addressing they must be 0)
Mode selection
0
0
0
0
0
1
1
t HIGH
0
1
LSB
LSB
0
0
ACK
ACK
t AA
t HD-STA
MSB
t HD-DAT
MSB
T2
0
t R
T1 T0
0
SUBADDRESS
SUBADDRESS
0
I
I
A3 A2 A1 A0
A3 A2 A1 A0
t LOW
t DH
LSB
LSB
ACK
t SD-DAT
ACK
t R
MSB
MSB
DATA 1 to DATA n
DATA 1 to DATA n
t SUBTOP
LSB
LSB
D95AU378
ACK
t txt
ACK
TDA7421N
P
P
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