tea1069a NXP Semiconductors, tea1069a Datasheet - Page 15

• Manufacturer Part Number: tea1069a
• Description: Versatile Speech/dialler/ringer With Music-on-hold
• Manufacturer: NXP Semiconductors

Philips Semiconductors
In case of a valid ringer signal the user is alerted through
a melody at the TONE output, generated by the ringer part
of the TEA1069 and TEA1069A. This melody follows the
cadence of the ringer signal. Both the melody and the
volume can be selected. The melody frequency and
duration are given in Table 2.
Table 2 Ringer melodies
C
To distinguish among different operating states after
CE/FDI is activated, input CSI is used. The basic states
are shown in Table 3.
Table 3 TEA1069 and TEA1069A basic states
1998 Jan 08
handbook, full pagewidth
Bell 1
Bell 2
Bell 3
Bell 4
INPUT CSI
RADLE SWITCH INPUT
Versatile speech/dialler/ringer with
music-on-hold
NAME
HIGH
HIGH
LOW
LOW
800 + 1066 + 1333
826 + 925 + 1027
1037 + 1161 + 1297 28 + 28 + 28
1297 + 1455 + 1621 28 + 28 + 28
FREQUENCY (Hz)
INPUT CE/FDI
CE/FDI
:
TONE
HIGH
HIGH
LOW
LOW
PIN
CSI
sync
time
( 1.5 frequency cycle)
ringer response delay
28 + 28 + 28
28 + 28 + 28
standby
not applicable
ringer
on-line
DURATION (ms)
sample
time
Fig.12 Ringer frequency detection.
STATE
15
For the hands-free state refer to Fig.23.
P
The pulse dialling system uses line current interruptions to
signal the digits dialled to the exchange. The number of
line current interruptions corresponds with the digit dialled
except for the digit [0] which is characterized by
10 interruptions. Before each digit there is an inter-digit
pause.
Valid keys are the digits [0] to [9] and [PAUSE].
The pulse dialling mode, the make/break ratio and the
access pause time depend on the diode options: PTS,
M/B, APT and APT2. DP/FL is LOW when V
power-on reset trip level and when RESET is HIGH.
The MOH/DMO pin (diode GOS = on) is used to reduce
the voltage swing over the a/b terminals during pulse
dialling. Several countries require this feature. The MUTE
pin is an open drain output which requires a pull-up
resistor. MUTE is HIGH when V
trip level and when RESET is HIGH.
Figure 13 shows the timing diagram in pulse dialling mode
when keys [3], [RECALL] and [4] are pressed.
ULSE DIALLER
:
PINS
DP/FL, MOH/DMO
TEA1069; TEA1069A
DD
is below power-on reset
Product specification
MBH200
AND
V DD
V EE
DD
MUTE
is below