PCD3360 查看數據表（PDF） - Philips Electronics

零件编号

产品描述 (功能)

比赛名单

PCD3360

Programmable multi-tone telephone ringer

Philips Electronics 

Philips Semiconductors

Programmable multi-tone telephone ringer

Product specification

PCD3360

7.6 Selection of tone sequences (TS1 and TS2)

TS1 and TS2 are effective when both FDE and FDI are HIGH, and VDD > Vstb. TS1 and TS2 normally select one of the

four standard tone sequences shown in Fig.4. Different tone sequences of 15 or 16 consecutive tones and pauses can

be mask programmed to order. The seven tones (plus pause) available are shown in Fig.5, together with the

corresponding ROM codes.

The tone sequences are repeated continuously provided the enable conditions at inputs FDE and FDI are valid and

VDD > Vstb. The first sequence and subsequent repetitions always begin with the first note in the sequence.

handbook, full pagewidth

pin state

TS2 TS1

LL

tone sequence output at pin TONE

tone code 3 3 3 4 4 4 2 2 2 7 7 7 6 6 6

LH

tone code 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3

HL

tone code 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5

HH

tone code

4 4 4 0 4 44 0 4 4 4 4 4 4 00

MGD715

Fig.4 Tone sequences mask-programmed in the PCD3360.

handbook, full pagewidth

tone key

frequency (Hz)

frequency ratio

tone code

−c d e g b c e

0 533 600 667 800 1000 1067 1333

8 : 9 : 10 : 12 : 15 : 16 : 20

01 2

34

5 67

MGD714

1997 Jan 15

Fig.5 Available tones (including pause) and their corresponding ROM codes.

6

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