MT88E43AE ZARLINK [Zarlink Semiconductor Inc], MT88E43AE Datasheet - Page 20

• Manufacturer Part Number: MT88E43AE
• Description: Extended Voltage Calling Number Identification Circuit 2
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

MT88E43
Notes:
1) The total recognition time is t
2) The total tone absent time is t
3) By choosing t
4) SIN227 specifies that the AC and DC loads should be removed between 50-150ms after the end of the FSK signal, indicated by CD
5) FSKen should be set low when FSK is not expected to prevent the FSK demodulator from reacting to other in-band signals such as
6) TRIGout is the ring envelope during ringing.
5-72
A/B Wires
TRIGout
PWDN
ESt
St/GT
StD
TE DC load
TE AC load
FSKen
CD
DR
DCLK
DATA
OSCout
to section “Dual Tone Detection Guard Time” on page 58 for details). V
to section “Dual Tone Detection Guard Time” on page 58 for details). V
edge.
returning to high. The MT88E43 may also be powered down at this time.
speech, tone alert signal and DTMF tones.
Line Reversal
Note 1
Figure 17 - Input and Output Timing for BT Caller Display Service (CDS), e.g., CLIP
GA
=15ms, t
t
DP
t
t
A
REC
GP
<120
Alerting Signal
t
PU
µ
ABS
A
20 5ms
B
will be 15-25ms so that the current wetting pulse and AC load can be applied right after the StD falling
REC
ABS
= t
= t
GP
GA
C
+ t
V
15 1ms
+ t
t
t
DA
t
ABS Note 3
TGt
DP
GA
DA
Current wetting pulse (see SIN227)
, where t
, where t
Ch. seizure
..101010..
Note 2
Zss (Refer to SIN227)
t
CP
GP
D
GA
is the tone present guard time and t
is the tone absent guard time and t
< 0.5mA (optional)
Mark
E
TGt
TGt
is the comparator threshold (refer to Figure 4).
is the comparator threshold (refer to Figure 4).
Data Packet
Data
F
t
PD
DP
DA
50-150ms
is the tone present detect time (refer
is the tone absent detect time (refer
G
Note 4
Note 5
t
CA
A
B = 88-110ms
C
D = 80-262ms
E = 45-75ms
F
G > 200ms
Note: All values obtained
from SIN227 Issue 1
100ms
2.5sec (typ. 500ms)
45ms (up to 5sec)
Ring
Note 6
Data Sheet