TEA1069 datasheet(18/44 Pages) PHILIPS

18 / 44 page

1998 Jan 08

Philips Semiconductors

Product speciﬁcation

Versatile speech/dialler/ringer with

music-on-hold

TEA1069; TEA1069A

The RECALL function results in a calibrated pulse which drives the electronic line current interrupter via pin DP/FL or

KT/EARTH. Flash or earth selection and various flash interruption times depend on the diode options: FES A and FES B

(diode GOS = on; see Fig.15).

Fig.15 Recall mode timing diagram.

tkd = key pressed time (depends on user).

tholdover = hold-over time.

tidp = interdigit pause time.

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

a. Recall using flash; trc = recall time using flash.

b. Recall using earth; tea = recall time using earth.

handbook, full pagewidth

MBH203

recall

KEY

DP/FL

trc

tholdover

MUTE

tkd

tholdover

recall

KEY

KT/EARTH

tea

MUTE

tkd

tinterflash

tidp

KEYBOARD: PINS ROW1 TO ROW5 AND COL1 TO COL6

The sense columns inputs and scanning rows outputs are

directly connected to a single contact keyboard matrix.

A second key entry will be valid after having released the

first button and after having pressed the second button.

Simultaneously pressing 2 buttons will disable the first

entered key. A key entry becomes valid when the

debounce time td has elapsed.

The column and row pins (except ROW5) are HIGH when

VDD is below power-on reset trip level and when RESET is

HIGH.

ROW5 is an open-drain input/output; this configuration is

used to avoid current flowing in the on-line or standby

state. A pull-up resistor should be connected to ROW5.

ROW5 is LOW when VDD is below power-on reset trip level

and when RESET is HIGH.

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