tda7421n STMicroelectronics, tda7421n Datasheet - Page 35

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

7.10 FM HOLE DETECTOR / FM DETUNING DETECTOR (subaddress 08H)
7.11 TUNER TESTING (subaddress 9H)
BWM2
30kHz
Slope
TEST
mode
MSB
MSB
PLL
Test
PLL
all combinations allowed
BW
X
0
0
1
0
0
1
0
all else not allowed
RECEPTION
BWM1
15kHz
Slope
SEEK
mode
MSB
Test
BW
T2
X
0
1
0
0
1
1
0
BWM0
10kHz
Slope
mode
Test
BW
T1
X
X
1
0
0
0
1
0
Hole det
HDM4
mode
MSB
Test
LSB
T0
X
0
1
0
Hole det Hole det Hole det Hole det
Disable
SDDIS
HDM3
output
all combinations allowed
SD
0
X
1
0
Bandwid
Disable
BWDIS
HDM2
th
X
0
1
0
1
1
0
1
all else not allowed
detector
Disable
HDDIS
HDM1
Hole
X
0
1
0
1
0
1
1
Disable
SMDIS
HDM0
Mute
LSB
LSB
LSB
Soft
X
0
1
0
0
1
1
1
MUTING SENSITIVITY(hole
depth)
Minimum (deep hole)
Maximum (shallow hole)
DETUNING MUTE RANGE (KHz)
10
15
30
CLAMPING WINDOW
Not allowed
Faster Clamping Window
(±1KHz over Threshold)
Slower Clamping Window
(±4KHz over Threshold)
no test
TEST MODES
Soft Mute Test
Hole Detector Test
Bandwidth Test
Audio Mute and SD Disabled
FUNCTION
FUNCTION
TDA7421N
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