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SC11212

Sierra Semiconductor
Part Number SC11212
Manufacturer Sierra Semiconductor
Description Caller I.D.
Published Dec 7, 2019
Detailed Description /\tr'!/ SIMRA SEMICONDUCTOR sc11212 CalleIr.D.withRingDetection FEATURES ! On-chip Ring Detection tr Highly integrated...
Datasheet PDF File SC11212 PDF File

SC11212
SC11212

Overview
/\tr'!/ SIMRA SEMICONDUCTOR sc11212 CalleIr.
D.
withRingDetection FEATURES ! On-chip Ring Detection tr Highly integrated solution ! Energy Detection for Qualifica- tion of Valid Data ! Low Power Consumption GENERAL DESCRIPTION Caller Identification Service is pro' vided by the local telephone companies.
Customers who subscribe to this service receive the calling party's phone number while the phone is still on-hook.
The phone number is transmitted from the central office to the subscriber during the silent interval between the first and second ring.
The signaling interface is arranged to allow simplex data transmission on the l4+D{ DtP PACKAGE i4-PlN SOtC PACKAGE ct) (1 N) N) (a D) .
D Ft pf< € voice channel to the customer pre- Telephone Network (GSTN).
The mises and conforms to the specifi- K11272 integrates ring detection, F cations listed in Table 1.
a 4 pole filter, an FSK demodula- TCas(uhncpeaipNrslooccr1gDtfi1uriCn2osa)1itnal2thlteeChrencaNldilu"egtmr,h",Ihba'ijet^,irs#yD;re''fi"liivi-:e'i'1rXiy.
:,"r,*_"i:**','ftt"o1i"f1irli':f-a:i{ff-olr;#fd.
iie=6Jntleilf,"r^*lnge1yld*?r;'ie;;lit'iJeJltc;;t[giHo:nfo;f:n:i.
aaf:stff"i"nafg,Illi:etd; orq rD (D c) --l- F i g u r e1 .
GI Ptl{ DESCEIPT|OilS 6l PINNAME PINNTJMBER DESCRIPTION Ua DO ED t 2 The output of the FSK demodulator appears at this pin.
1 1 Energy-Detect output.
Goes low when inband energy is present and detected by the energy detect circuit.
EDC 5 Energy-Detect C-apacitor.
A 0.
1pF capacitor should be connected between this pin and ground.
EDLVL GND FD 3 Energy detect level control.
, Groundpin (0V).
1 0 Power down input control When pulled low the chip will go into a power down mode.
RDO l 3 Ring Detect output.
Goes low when ringng signal is detected.
RDSEL voo 4 Ring detectorcontrol inpLrl 1 4 Positivepower supply (+5V).
Vwr Vnrn Vrrs 1 Tip input of the telephoneline.
2 Ring input of the telephoneline.
6 Referenceground pin.
For improved performance a lpF capacitor should be connecte...


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