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MT88E45BNR 参数 Datasheet PDF下载

MT88E45BNR图片预览
型号: MT88E45BNR
PDF下载: 下载PDF文件 查看货源
内容描述: [Telephone Calling No Identification Circuit, CMOS, PDSO20, 5.30 MM, SSOP-20]
分类和应用: 光电二极管
文件页数/大小: 30 页 / 1053 K
品牌: ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
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Advance Information  
MT88E45  
Line Reversal (Optionally sent)  
First Complete  
Ring Cycle  
Mark  
D
Ch. seizure  
C
Data  
E
Ring Burst  
A
A/B Wires  
B
F
Note 2  
50-150ms  
Note 1  
250-400ms  
PWDN  
Note 3  
TE DC load  
TE AC load  
FSKen  
Note 3  
t
t
CA  
CP  
CD  
A = 200-450ms  
B 500ms  
C = 80-262ms  
D = 45-262ms  
E 2.5s (typ. 500ms)  
F >200ms  
DR  
Note 4  
DCLK  
DATA  
OSC2  
Note: Parameter  
from "CCA Exceptions  
Document Issue 3"  
F
..101010..  
Data  
t
t
PD  
PU  
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 MT88E45 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.  
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