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TDA7421 Datenblatt(PDF) 23 Page - STMicroelectronics

Teilenummer TDA7421
Bauteilbeschribung  AM/FM TUNER FOR CAR RADIO AND Hi-Fi APPLICATIONS
PDF  38 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7421 Datenblatt(HTML) 23 Page - STMicroelectronics

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LOCK DETECTOR & PLL MODE CONTROL
MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
0
0
PLL standby mode
0
1
PLL AM
1
0
not used
1
1
PLL FM mode
0
0
PD phase difference threshold 10ns
0
1
PD phase difference threshold 20ns
1
0
PD phase difference threshold 30ns
1
1
PD phase difference threshold 40ns
0
0
Not used in application mode
0
1
Activation delay = 4
⋅ fref
1
0
Activation delay = 6
⋅ fref
1
1
Activation delay = 8
⋅ fref
0
No lock detector controlled chargepump
1
Lock detector controlled chargepump
LDENA
D3
D2
D1
D0
PM1
PM0
Bit name
Subaddress = 05H
IF COUNTER REFERENCE CONTROL 1 (LSB)
MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
00
000000
LSB = 0
00
000001
LSB = 1
00
000010
LSB = 2
all combinations allowed
• • •
11
111100
LSB = 252
11
111101
LSB = 253
11
111110
LSB = 254
11
111111
LSB = 255
IRC7
IRC6
IRC5
IRC4
IRC3
IRC2
IRC1
IRC0
Bit name
Subaddress = 06H
TDA7421
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