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参数资料
| 型号： | TDA7421N |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| 封装： | TQFP-64 |
| 文件页数： | 22/47页 |
| 文件大小： | 374K |
| 代理商： | TDA7421N |
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TDA7421N
I2C bus interface
5.7
Frame examples
Figure 11.
Example for addressing the PLL part
Figure 12.
Example for addressing the tuner part:
ACK:
Acknowledge
S:
Start
P:
Stop
I:
Page mode
T2, T1, T0:
Used in test mode (for PLL only, for TUNER addressing they must be 0)
A3, A2, A1, A0: Mode selection
S
1
0
1
0
ACK
P
MSB
LSB
MSB
LSB
MSB
LSB
CHIP ADDRESS
D96AU549
T2
I
SUBADDRESS
DATA 1 to DATA n
T1 T0
A3 A2 A1 A0
D96AU550
S
1
0
1
0
ACK
P
MSB
LSB
MSB
LSB
MSB
LSB
CHIP ADDRESS
0
I
SUBADDRESS
DATA 1 to DATA n
0
A3 A2 A1 A0
Table 13.
Tuner subaddress
MSB
LSB
Function
X
I
A3
A2
A1
A0
00
Status
0
1
FM stop station/FM IF AGC
0
1
0
FM smeter slider/ AM IF2 AMP
0
1
AM AGC1/AM stop station
0
1
0
IFT1/IFT2
0
1
0
1
Front-end adjustment
0
1
0
FM demod. adjustment
01
11
FM audio mute gain/FM IF buffers/FM soft
mute
1
0
FM hole detector/FM detuning
10
01
Tuner testing
0
Page mode disabled
1
Page mode enabled
0
must be "0”
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