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參數(shù)資料
| 型號(hào)： | MT88E45 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | 4-Wire Calling Number Identification Circuit(4線主叫識(shí)別電路（接收傳送的物理層信號(hào)）) |
| 中文描述： | 4線主叫號(hào)碼識(shí)別電路（四線主叫識(shí)別電路（接收傳送的物理層信號(hào)）） |
| 文件頁(yè)數(shù)： | 24/27頁(yè) |
| 文件大?。?/td> | 113K |
| 代理商： | MT88E45 |
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MT88E45
Advance Information
24
Figure 17 - Application Timing for BT Caller Display Service (CDS), e.g., CLIP
Notes:
1) The total recognition time is t
REC
= t
GP
+ t
DP ,
where t
GP
is the tone present guard time and t
DP
is the tone present detect time. V
TGt
is the comparator threshold (refer to Figure 5 for details).
2) The total tone absent time is t
ABS
= t
GA
+ t
DA ,
where t
GA
is the tone absent guard time and t
DA
is the tone absent detect time. V
TGt
is the comparator threshold (refer to Figure 5 for details).
3) By choosing t
GA
=15ms, t
ABS
will be 15-25ms so that the current wetting pulse and AC load can be applied right after the STD rising
edge.
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
returning to high. The MT88E45 may also be powered down at this time.
5) The MT88E45 should be taken out of FSK mode when FSK is not expected to prevent the FSK demodulator from reacting to other
in-band signals such as speech, DT-AS/CAS and DTMF tones.
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.
Ch. seizure
D
Mark
..101010..
Data
t
DP
t
DA
t
GP
t
GA
t
REC
t
ABS
Note 3
t
CP
t
CA
A
B
C
E
F
G
Zss (Refer to SIN227)
< 0.5mA (optional)
<120
μ
A
Note 4
V
TGt
Note 5
A/B Wires
PWDN
Note 6
EST
ST/GT
STD
Note 7
TE DC load
TE AC load
FSKen
Note 6
CD
DR
Note 7
DCLK
DATA
OSC2
Note 1
Note 2
t
PU
t
PD
15
±
1ms
20
±
5ms
Data
50-150ms
Note 4
Tip/Ring
CASen
Note 6
Ring
Current wetting pulse (see SIN227)
Line Reversal
A
≥
100ms
B = 88-110ms
C
≥
45ms (up to 5sec)
D = 80-262ms
E = 45-75ms
F
≤
2.5sec (typ. 500ms)
G > 200ms
Note:
All
obtained from SIN227
Issue 1
values
‘Idle State Tone Alert Signal’
DT-AS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT88E45AS | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:4-Wire Calling Number Identification Circuit 2(4-Wire CNIC2) |
| MT88E45B | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:4-Wire Calling Number Identification Circuit 2 (4-Wire CNIC2) |
| MT88E45BN | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:4-Wire Calling Number Identification Circuit 2 |
| MT88E45BN1 | 制造商:Microsemi Corporation 功能描述:CALLER ID CMOS 3.58MHZ 3.3V 20SSOP - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC CNIC CIDCW CID 20SSOP 制造商:Microsemi Corporation 功能描述:IC CNIC CIDCW CID 20SSOP |
| MT88E45BNR | 制造商:Microsemi Corporation 功能描述:CALLER ID CMOS 3.58MHZ 3.3V 20SSOP - Tape and Reel |
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