TDA7421 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
TDA7421 Datasheet PDF : 38 Pages
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TDA7421
PLL DATA BYTE SPECIFICATION
CHARGEPUMP CONTROL
MSB
LSB
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0 High current = 0mA
0
0
0
1 High current = 0.5mA
0
0
1
0 High current = 1.0mA
0
0
1
1 High current = 1.5mA
0
1
0
0 High current = 2.0mA
0
1
0
1 High current = 2.5mA
0
1
1
0 High current = 3.0mA
0
1
1
1 High current = 3.5mA
1
0
0
0 High current = 4.0mA
1
0
0
1 High current = 4.5mA
1
0
1
0 High current = 5.0mA
1
0
1
1 High current = 5.5mA
1
1
0
0 High current = 6.0mA
1
1
0
1 High current = 6.5mA
1
1
1
0 High current = 7.0mA
1
1
1
1 High current = 7.5mA
0
0
Low current = 0µA
0
1
Low current = 15µA
1
0
Low current = 100µA
1
1
Low current = 115µA
0
Select low Current
1
Select high Current
0
Select loop filter 1
1
Select loop filter 2
LPIN1/2 CURRH B1
B0
A3
A2
A1
A0
Subaddress = 00H
PLL COUNTER 1 (LSB)
MSB
LSB
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
0
0
0
0 LSB = 0
0
0
0
0
0
0
0
1 LSB = 1
0
0
0
0
0
0
1
0 LSB = 2
all combinations allowed
•••
1
1
1
1
1
1
0
0 LSB = 252
1
1
1
1
1
1
0
1 LSB = 253
1
1
1
1
1
1
1
0 LSB = 254
1
1
1
1
1
1
1
1 LSB = 255
PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0 Bit name
FUNCTION
Subaddress = 01H
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