TDA7427D Datasheet TDA7427D | P13-P15

Data Byte Specification

CHARGE PUMP 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 = 50µA

1 0 Low current = 100µA

1 1 Low current = 150

0 Select low Current

1 Select high Current

1 Select loop filter LP_FM

0 Select loop filter LP_AM

LPIN1/2 CURRH B1 B0 A3 A2 A1 A0 Subaddress = 00H

PLL COUNTER 1 (LSB)

MSB LSB FUNCTION

D7 D6 D5 D4 D3 D2 D1 D0

00000000LSB=0

00000001LSB=1

00000010LSB=2

11111100LSB=252

11111101LSB=253

11111110LSB=254

11111111LSB=255

PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0 Bit name Subaddress = 01H

TDA7427

13/21

PLL COUNTER 2 (MSB)

MSB LSB FUNCTION

D7 D6 D5 D4 D3 D2 D1 D0

00000000MSB=0

0 0 0 0 0 0 0 1 MSB = 256

0 0 0 0 0 0 1 0 MSB = 512

1 1 1 1 1 1 0 0 MSB = 64768

1 1 1 1 1 1 0 1 MSB = 65024

1 1 1 1 1 1 1 0 MSB = 65280

1 1 1 1 1 1 1 1 MSB = 65536

PC15 PC14 PC13 PC12 PC11 PC10 PC9 PC8 Bit name Subddress = 02H

Swallow mode: fvco/fsyn = LSB + MSB + 32

Direct mode: fvco/fsyn = LSB + MSB + 1

PLL REFERENCE COUNTER 1 (LSB)

MSB LSB FUNCTION

D7 D6 D5 D4 D3 D2 D1 D0

00000000LSB=0

00000001LSB=1

00000010LSB=2

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

RC7 RC6 RC5 RC4 RC3 RC2 RC1 RC0 Bit name Subaddress =03H

PLL REFERENCE COUNTER 2 (MSB)

MSB LSB FUNCTION

D7 D6 D5 D4 D3 D2 D1 D0

00000000MSB=0

0 0 0 0 0 0 0 1 MSB = 256

0 0 0 0 0 0 1 0 MSB = 512

1 1 1 1 1 1 0 0 MSB = 64768

1 1 1 1 1 1 0 1 MSB = 65024

1 1 1 1 1 1 1 0 MSB = 65280

1 1 1 1 1 1 1 1 MSB = 65536

RC15 RC14 RC13 RC12 RC11 RC10 RC9 RC8 Bit name Subddress = 04H

OSC

REF

= LSB + MSB + 1

TDA7427

14/21

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 swallow mode

1 0 PLL AM direct mode

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 Digital output 1 at pin ”dout1/inlock”

1 Inlock information at pin ”dout1/inlock”

0 No lock detector controlled chargepump

1 Lock detector controlled chargepump

LDENA INLOCK 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

00000000LSB=0

00000001LSB=1

00000010LSB=2

11111100LSB=252

11111101LSB=253

11111110LSB=254

11111111LSB=255

IRC7 IRC6 IRC5 IRC4 IRC3 IRC2 IRC1 IRC0 Bit name Subaddress = 06H

TDA7427

15/21

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21

TDA7427D

Mfr. #:

Buy TDA7427D

Manufacturer:

STMicroelectronics

Description:

Audio DSPs AM/FM Radio Freq Syn

Lifecycle:

New from this manufacturer.

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TDA7427D