FX613P データシートの表示（PDF） - CML Microsystems Plc

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FX613P

Universal Call Progress Decoder

CML Microsystems Plc 

Application Information ......

N = int (Frequency x Measurement Period)

Measurement Period

= 39.47ms for Low Band (300Hz to 660Hz)

= 13.16ms for High Band (900Hz to 2150Hz)

Note: For input frequencies of between 661Hz and 899Hz the FX613 will give no reliable output.

Bit 5 Band Bit (5)

Output

First HI-“1”/LO-“0”

MSB (4)

(3)

(2)

(1)

LSB (0)

Bits 0 to 4 represent the measured frequency in the selected band

Bits

0 to 4

=N

When a ‘correct’ decode has been allowed and an interrupt generated, a 6-bit data word will be presented at the

Serial Output Port. This 6-bit word indicates the input frequency's band and value as described below.

As an example, the following binary-word presented at the Serial Output Port (1 1 0 1 1 0) will indicate a

frequency in the HI Band of between 1680Hz and 1740Hz (Bit-5 = “1” = HI, ‘N’ = 22).

LO Band HI Band N B5

280

840

11 H/L

285

855

11

290

870

11

295

885

11

300

900

11

305

915

12 H/L

310

930

12

315

945

12

320

960

12

325

975

12

330

990

13 H/L

335

1005

13

340

1020

13

345

1035

13

350

1050

13

355

1065

14 H/L

360

1080

14

365

1095

14

370

1110

14

375

1125

14

380

1140

14

385

1155

15 H/L

390

1170

15

395

1185

15

400

1200

15

405

1215

15

410

1230

16 H/L

415

1245

16

420

1260

16

425

1275

16

430

1290

16

435

1305

17 H/L

440

1320

17

445

1335

17

450

1350

17

455

1365

17

460

1380

18 H/L

465

1395

18

470

1410

18

475

1425

18

480

1440

18

485

1455

19 H/L

490

1470

19

495

1485

19

500

1500

19

Table 1 Decode Frequency Data

B4 B3 B2 B1 B0

01011

01100

01101

01110

01111

10000

10001

10010

10011

LO Band

505

510

515

520

525

530

535

540

545

550

555

560

565

570

575

580

585

590

595

600

605

610

615

620

625

630

635

640

645

650

655

660

665

670

675

680

685

690

695

700

705

710

715

720

725

5

HI Band N B5 B4 B3 B2 B1 B0

1515

1530

1545

1560

1575

1590

1605

1620

1635

1650

1665

1680

1695

1710

1725

1740

1755

1770

1785

1800

1815

1830

1845

1860

1875

1890

1905

1920

1935

1950

1965

1980

1995

2010

2025

2040

2055

2070

2085

2100

2115

2130

2145

2160

2175

19 H/L 1 0 0 1 1

20 H/L 1 0 1 0 0

20

20

20

20

21 H/L 1 0 1 0 1

21

21

21

21

22 H/L 1 0 1 1 0

22

22

22

22

23 H/L 1 0 1 1 1

23

23

23

23

24 H/L 1 1 0 0 0

24

24

24

24

25 H/L 1 1 0 0 1

25

25

25

25

26 H/L 1 1 0 1 0

26

26

26

26

27 H/L 1 1 0 1 1

27

27

27

27

28 H/L 1 1 1 0 0

28

28

28

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