MT88E45BS1 Zarlink, MT88E45BS1 Datasheet - Page 25

• Manufacturer Part Number: MT88E45BS1
• Description: Caller ID CMOS 3.58MHz 3.3V 20-Pin SOIC Tube
• Manufacturer: Zarlink

Specifications of MT88E45BS1

• Package: 20SOIC
• Telecommunication Standards Supported: ANSI/TIA/EIA-716|ETSI/ETS 300 778-1|GR-30|SIN227|SIN242|SR-TSV-002476|TIA/EIA-777
• Fabrication Technology: CMOS
• Maximum Data Rate: 1212 Bd
• Typical Operating Supply Voltage: 3.3 V
• Typical Supply Current: 2.8 mA
• Minimum Operating Temperature: -40 °C
• Maximum Operating Temperature: 85 °C
• Operating Frequency: 3.58 MHz

MT88E45
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) The MT88E45 should be taken out of FSK mode when FSK is not expected to prevent the FSK demodulator from reacting to other
6) PWDN, Tip/Ring CASen, FSKen are internal signals decoded from CB0/1/2.
7) This signal represents the mode of the DR/STD pin.
24
PWDN
Note 6
Tip/Ring
CASen
Note 6
EST
Note 7
FSKen
Note 6
A/B Wires
ST/GT
STD
TE DC load
TE AC load
DR
DCLK
DATA
OSC2
Note 7
CD
is the comparator threshold (refer to Figure 5 for details).
is the comparator threshold (refer to Figure 5 for details).
edge.
returning to high. The MT88E45 may also be powered down at this time.
in-band signals such as speech, DT-AS/CAS and DTMF tones.
Note 1
Line Reversal
Figure 17 - Application Timing for BT Caller Display Service (CDS), e.g., CLIP
GA
=15ms, t
t
‘Idle State Tone Alert Signal’
t
DP
A
REC
t
GP
<120 Aµ
t
ABS
PU
DT-AS
15 1ms
20 5ms
B
will be 15-25ms so that the current wetting pulse and AC load can be applied right after the STD rising
REC
ABS
= t
= t
GP
GA
+ t
C
+ t
V
t
t
DA
DP ,
t
ABS Note 3
TGt
DA ,
GA
Current wetting pulse (see SIN227)
where t
where t
Ch. seizure
..101010..
Zss (Refer to SIN227)
GP
t
D
GA
CP
is the tone present guard time and t
is the tone absent guard time and t
Note 2
< 0.5mA (optional)
Mark
E
Data
Data
F
t
t
CA
PD
DP
DA
is the tone present detect time. V
is the tone absent detect time. V
Note 4
G
Note 4
Note 5
Advance Information
A
B = 88-110ms
C
D = 80-262ms
E = 45-75ms
F
G > 200ms
Note:
obtained from SIN227
Issue 1
50-150ms
100ms
2.5sec (typ. 500ms)
45ms (up to 5sec)
Ring
All
values
TGt
TGt