TEA1069 datasheet(16/44 Pages) PHILIPS

16 / 44 page

1998 Jan 08

Philips Semiconductors

Product speciﬁcation

Versatile speech/dialler/ringer with

music-on-hold

TEA1069; TEA1069A

Fig.13 Timing diagram in pulse dialling mode.

tb = break time.

tm = make time.

tidp = interdigit pause time.

trc = recall time.

tholdover = hold-over time.

tinterflash = interflash hold-over time (only for TEA1069A).

handbook, full pagewidth

MBH201

[3]

KEYS

MUTE

DP/FL

MOH/DMO

[recall]

[4]

tidp

tm + tholdover

tholdover

tinterflash

trc

TONE DIALLER: PINS TONE AND MUTE

In this system digits are transmitted as two tones

simultaneously, the so called Dual-Tone Multi-Frequency

(DTMF) system. Tone digits are separated by a pause

time. Valid keys are the digits [0] to [9], [

∗], [#] and

[PAUSE].

The DTMF dialling mode, the tone burst/pause times and

the access pause time depend on the diode options: PTS,

TBT, APT and APT2.

The MUTE pin is an open drain output which requires a

pull-up resistor. MUTE is HIGH when VDD is below

power-on reset trip level and when RESET is HIGH.

Figure 14 shows the timing diagram in tone dialling mode

when successively keys [3], [3], [RECALL] and [4] are

dialled.

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