Block diagram and pin description

TDA7479

4/12

Table 2.

Pin description

No pin

Name

Description

1

QUAL

Output for signal quality indication (High = good)

2

RDDA

RDS data output

3

VREF

Reference voltage

4

MPX

RDS input signal

5

OSEL

Oscillator selector pin:

– open, closed to VS = quartz oscillator

– closed to GND = external driven

6

GND

Ground

7ARI

Output for ARI indication:

– high when RDS+ARI are present

– high when only ARI is present

– low when only RDS is present

– undefined when nos signal is present

8

FILOUT

Filter output

9

FSEL

Frequency selector pin:

– 100 kHz to VS = 17.328 MHz

– open = 4.332MHz

– closed to VS = 8.664 MHz

10

TM

Test mode pin:

– open = normal operation

– closed to VS = test mode

11

EXTRES

Reset pin:

– open = run mode

– -closed to VS = reset condition

12

VS

Supply voltage

13

OSCIN

Oscillator input

14

OSCOUT Oscillator output

15

T57

Testing output pin: 57 kHz clock output

16

RDCL

RDS clock output 1187.5 Hz