參數(shù)資料
型號: MT88E45BS
廠商: ZARLINK SEMICONDUCTOR INC
元件分類: 無繩電話/電話
英文描述: 4-Wire Calling Number Identification Circuit 2
中文描述: TELEPHONE CALLING NO IDENT CKT, PDSO20
封裝: 0.300 INCH, SOIC-20
文件頁數(shù): 25/28頁
文件大?。?/td> 488K
代理商: MT88E45BS
Data Sheet
MT88E45B
25
Figure 18 - Application Timing for UK’s CCA Caller Display Service (CDS), e.g., CLIP
Notes:
1) From TW/P&E/312. Start time: The CPE should enter the signalling state by applying the DC and AC terminations within this time
after the end of the ring burst.
2) End time: The CPE should leave the signalling state by removing the DC and AC terminations within this time after the end of Data,
indicated by CD returning to high. The MT88E45B should also be taken out of FSK mode at this time to prevent the FSK
demodulator from reacting to other in-band signals such as speech, and DTMF tones.
3) PWDN and FSKen are internal signals decoded from CB0/1/2.
4) This signal represents the mode of the DR/STD pin.
Ch. seizure
Mark
Data
..101010..
Data
Note 1
250-400ms
t
CP
t
CA
A
B
C
D
E
F
A/B Wires
PWDN
Note 3
TE DC load
TE AC load
FSKen
Note 3
CD
DR
DCLK
DATA
OSC2
Note 2
50-150ms
A = 200-450ms
B
500ms
C = 80-262ms
D = 45-262ms
E
2.5s (typ. 500ms)
F >200ms
Note: Parameter F
from "CCA Exceptions
Document Issue 3"
t
PU
t
PD
Note 4
Ring Burst
First Complete
Ring Cycle
Line Reversal (Optionally sent)
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