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SM8220/SM8221
NIPPON PRECISION CIRCUITS INC.
Calling Number Identification Receiver IC
OVERVIEW
The SM8220/SM8221 Calling Number Identification Receiver IC is a CMOS integrated circuit, which provides an interface to various calling information delivery services such as Calling Number Delivery (CND) and Calling Name Delivery (CNAM) compatible with the Bellcore GR-30-CORE. The device also contains a power down circuit, a ring detect circuit and a carrier detect circuit for easier system implementation.
FEATURES
*Compatible with Bellcore GR-30-CORE *Integrated band pass filter *FSK demodulator Bell 202 and ITU-T V.23 *High input sensitivity: -48 dBm typical *Ring detect output *Carrier Detect Output (SM8220) *Power down mode: 1A power down current *Uses 3.579545 MHz crystal (SM8220) or external clock source *Power supply voltage: 3V to 5.5V *Low power consumption *Molybdenum-gate CMOS process *Package SM8220: 16 pin SOP, 16 pin DIP SM8221: 8 pin SOP, 8 pin DIP
APPLICATIONS
*Calling Number Delivery service *Adjunct Boxes *Telephone Answering Machines *Feature Phones *Fax Machines *Computer Interface Products
PINOUT(Top View)
SM8220S (16pin SOP) SM8220P (16pin DIP)
TIP RING AGND RDIN RDRC RDET PDWN GND
1
16
VDD FOUT DMIN DOUT NC CDET OSCOUT OSCIN /CLKIN
TIP RING AGND RDIN RDRC RDET PDWN GND
1
16
VDD FOUT DMIN DOUT NC CDET OSCOUT OSCIN /CLKIN
SM 8220 S
SM 82 20 P
8
9
8
9
SM8221S (8pin SOP)
SM8221P (8pin DIP)
TIP RING PDWN GND
1
8
VDD DOUT CDET
TIP RING PDWN GND
1
8
VDD DOUT CDET
SM 82 2 1 P
8221
4
5
CLKIN
4
5
CLKIN
NIPPON PRECISION CIRCUITS-1
SM8220/SM8221 PACKAGE DIMENSIONS(Unit: mm)
SM8220S (16 pin SOP) SM8220P (16 pin DIP)
7.49 to 8.13
3.90 0.09
6.00 0.20
9.89 0.09
0 to 8 3.18
3.30
1.375 0.275
0.10
0.175 0.075 1.55 0.20
1.27
0.41 0.05
0.84 0.43
0.25 M
2.54
0.46
1.52
SM8221S (8 pin SOP)
SM8221P (8 pin DIP)
3.81 to 3.99
5.80 to 6.20
7.49 to 8.13
0.38 to 1.02 3.68 to 4.32
0.25
0.13 0.06
19.05
4.80 to 4.98 0.36 to 0.46
0.19 to 0.
25
1.52 3.30
0 to 8 1.10 to 1.65 1.27 0.10 to 0.25 1.35 to 1.75 0.41 to 1.27
3.18
0.38 to 1.02
2.54
0.46
BLOCK DIAGRAM
FOUT* DMIN*
TIP RING
Band Pass Filter
(SM8221)
FSK Demodulator
3.68 to 4.32
DOUT
OSCIN* /CLKIN OSCOUT* PDWN RDIN*
Power Down Control and Clock Generator
Carrier Detect
CDET
RDET* RDRC* AGND* VDD GND
*: Not available for SM8221. NIPPON PRECISION CIRCUITS-2
0.25
8.89
8.13 to 9.40
6.35
8.13 to 9.40
6.35
SM8220/SM8221 PIN DESCRIPTIONS
Number SM8220 1 2 3 4 5 6 7 SM8221 1 2 3 TIP RING AGND RDIN RDRC RDET PDWN i i o si od o si Tip Input: This pin is connected to the tip side of the twisted pair telephone wires. This pin must be DC isolated from the phone line. Ring Input: This pin is connected to the ring side of the twisted pair telephone wires. This pin must be DC isolated from the phone line. Analog Ground: 1/2 VDD voltage output. This pin must be grounded through 0.1 F capacitor. Ring Detect Input: The attenuated ring signal is connected to this pin for the ring detection. Ring Detect RC Terminal: An RC network will be connected to this pin to set time delays for the ring signal detection. Ring Detect Output: This pin is an output of a schmitt trigger buffer which input is connected to RDRC pin. The low level at this pin indicates that the ring signal is detected. Power Down Control: This pin must be kept at low level for the normal operation. When it is high, the device will be in the power down. Under the power down mode, OSCOUT, CDET and DOUT pins are set to high level and AGND, FOUT pins are set to high impedance. 8 9 10 11 12 13 14 15 16 4 5 6 7 8 GND OSCIN /CLKIN OSCOUT CDET NC DOUT DMIN FOUT VDD o o o i o i Device Ground: This pin is connected to the system ground. Crystal Oscillator Input: A crystal will be connected between this pin and OSCOUT pin. This pin may be driven from an external clock source. Crystal Oscillator Output: A crystal will be connected between this pin and OSCIN pin. This pin must be kept open when OSCIN pin is driven from an external clock source. Carrier Detect Output: When low, this output indicates that a valid carrier present on the line. No connection pin. Data Out: This pin presents the output of the demodulator while CDET pin is low. When CDET pin goes high, this pin is held high. Demodulator Input: This pin is connected from FOUT pin through a 0.1F capacitor. No other components should be connected to this pin. Band Pass Filter Output: This pin is connected to DMIN pin through a 0.1F capacitor. No other components should be connected to this pin. Power Supply: Positive power supply pin. (Note) si: Schmitt Triger Input, od: Open Drain Output. Name i/o Function
NIPPON PRECISION CIRCUITS-3
SM8220/SM8221 ABSOLUTE MAXIMUM RATINGS
Parameter Supply Voltage Input Voltage Input Current Power Dissipation
Operating Temperature Range Storage Temperature Range
Symbol VDD VIN IIN PD Ta TSTG TSLD
Condition
(GND= 0V unless otherwise noted) Rating Unit -0.5 to 7.0 -0.3 to VDD+0.3 10 120 -20 to 85 -40 to 125 255 10 V V mA mW C C C sec
Soldering Temperature Soldering Time
tSLD
ELECTRICAL CHARACTERISTICS
DC CHARACTERISTICS
(VDD= 50.5 V, GND = 0 V, fCLK = 3.579545 MHz, Ta = -20 to 85 C unless otherwise noted) Rating Parameter DC Supply Voltage Supply Current Power Down Current Input Low Voltage1 Input High Voltage1 Input Low Voltage2 Input High Voltage2 Output Low Voltage Output High Voltage Input Leakage Current Output Leakage Current Input DC Resistance Symbol VDD IDD IDPD VIL1 VIH1 VIL2 VIH2 VOL VOH IIN IOFF RIN *1 *2 OSCIN/CLKIN pin VOSCOUT= 0.8VDD OSCIN/CLKIN pin VOSCOUT= 0.2VDD PDWN, RDIN, RDRC pin PDWN, RDIN, RDRC pin DOUT, RDET, CDET, RDRC pin, VDD= 4.5V, IOL= 1.6mA DOUT, RDET, CDET pin VDD= 4.5V, IOH= -1.6mA OSCIN/CLKIN, PDWN, RDIN pin, VDD= 5.5V, VIN= 0 or 5V RDRC pin, RDIN= 0V VDD= 5.5V,VOH= 5.5V TIP, RING pin, VDD= 5V Impedance measured from 1/2VDD *1: OSCIN/CLKIN= 0V, PDWN= 0V, RDIN= 0V, RDRC= 0V, Other Input Pins= open *2: OSCIN/CLKIN= 0V, PDWN= VDD, RDIN= 0V, RDRC= 0V, Other Input Pins= open 175 250 325 k 1 A -1 1 A 3.7 V 0.75VDD 2 3 0.4 0.3VDD V V V 0.7VDD V Condition MIN 3 TYP 5 1.7 MAX 5.5 3 1 0.3VDD Unit V mA A V
NIPPON PRECISION CIRCUITS-4
SM8220/SM8221
AC CHARACTERISTICS
(VDD= 5.0V, GND= 0V, fCLK= 3.579545MHz, Ta= -20 to 85 C, 0dBm= 0.7746Vrms @ 600 unless otherwise noted) Rating Parameter Input Sensitivity TIP, RING pin Input Level Band Pass Filter Frequency Response (relative to 1700 Hz @ -34 dBm input level) Symbol Condition TIP, RING pin VDD= 5V VDD= 3V 60Hz 1200 Hz 2200Hz 4000Hz 10000Hz Carrier Detect ON Sensitivity Carrier Detect OFF Sensitivity Oscillator Frequency CDON CDOFF fCLK CDET pin CDET pin -55 -0.1% -80 -1 0 -43 -54 -48 -51 3.579545 +0.1% -44 dBm dBm MHz MIN TYP -48 -15 -18 dB MAX Unit dBm dBm
TYPICAL BAND-PASS FILTER FREQUENCY RESPONSE
(Relative to 1700 Hz @ -34 dBm input level)
20 0 -20 -40 -60 -80 -100 0 1000 2000 3000 4000
Gain (dB)
Frequency (Hz)
SWITCHING CHARACTERISTICS
(VDD= 5.0V, GND= 0V, fCLK= 3.579545MHz, Ta= 25 C, CL= 50pF unless otherwise noted) Rating Parameter Power Down Low to Oscillator Start Up Power Down Low to FSK Data Detect Carrier Detect Acquisition Time End of Data to Carrier Detect High Symbol Condition MIN TYP 5 10 10 10 MAX Unit ms ms ms ms
tDOSC tSUPD tDAQ tDCH
NIPPON PRECISION CIRCUITS-5
SM8220/SM8221 FUNCTIONAL DESCRIPTION
The SM8220/SM8221 Calling Number Identification Receiver IC is a device compatible with the Bellcore GR30-CORE for transmitting asynchronous voice-band data to Customer Premises Equipment (CPE) from a serving Stored Program Controlled Switching System (SPCS) or a Central Office (CO). This data transmission technique is applicable in a variety of services such as Calling Number Delivery (CND), Calling Name Delivery (CNAM). With these services, a subscriber will have the ability to display a message containing the phone number of the calling party, the name of a calling party, the date and the time.
The data signaling interface should conform to Bell 202 and ITU-T V.23 specification, which is:
Bell 202 Modulation Type Logical 1 (Mark) Logical 0 (Space) Carrier Frequency Transmission rate Data format 1200 12Hz 2200 22Hz 1700Hz 1200BPS serial, asynchronous ITU-T V.23 1300 22Hz 2100 22Hz 1700Hz 1200BPS serial, asynchronous
Continuous - phase binary frequency shift keying (FSK)
Bellcore GR-30-CORE Data Format
1st Ring 101010... 1 Data 2nd Ring
Single Message Format
Channel Seizure Signal Mark Signal Message Type Word * Message Length Word * Message Words * Checksum Word *: Mark bits
1st Ring 101010... 1 Data
2nd Ring
Multi Message Format
Channel Seizure Signal Mark Signal Message Type Word * Message Length Word * Parameter * Type Word Parameter Length * Word Parameter Words *
Parameter * Type Word
Parameter Length * Word
Parameter Words
*
Parameter * Type Word
Parameter Length * Word
Parameter Words
* Checksum Word *: Mark bits
NIPPON PRECISION CIRCUITS-6
SM8220/SM8221 TIMING DIAGRAM
1st Ring INPUT (TIP, RING) 101010... 1 Data 2nd Ring
RDRC*
VIH2 VIL2
RDET*
PDWN
tSUPD
CDET
tDAQ
DOUT 101010... 1 Data
tDCH
OSCOUT*
tDOSC
*: Not available for SM8221.
TYPICAL APPLICATION CIRCUIT
SM8220
0.001F 91k (240k)
+5V
( ) = When 3V range
Protection Network
TIP RING AGND RDIN
VDD FOUT DMIN DOUT Controller NC CDET OSCOUT OSCIN /CLKIN
3.579545 MHz 0.1F 10F
0.001F 91k (240k)
0.1F
From TIP From RING
0.2F
0.2F
270k 470k
RDRC RDET
33k 0.2F
PDWN GND
LCD Driver
LCD Display
+5V
SM8221
0.001F 91k (240k)
( ) = When 3V range
Protection Network 0.001F 91k (240k)
TIP RING PDWN
VDD DOUT
10F
Controller CDET CLKIN
3.579545MHz
From TIP GND From RING
LCD Driver
LCD Display
(Note) When the Ring Detect feature of SM8220 is not used, always connect RDIN and RDRC pins to the system ground level. This will cut excess current drain from VDD under the normal and power down mode of operation. This diagram example is desingned to adapt to the specifications of United States. When it is used in other area, the constants may have to chenged appropriately.
NIPPON PRECISION CIRCUITS-7
SM8220/SM8221
NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to
improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification. The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter, including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, directly or indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies.
NIPPON PRECISION CIRCUITS INC.
4-3, FUKUZUMI 2 CHOME, KOTO-KU TOKYO,135-8430 JAPAN Telephon: +81-3-3642-6661 Facsimile: +81-3-3642-6698
NIPPON PRECISION CIRCUITS INC.
NC9508DE
1998. 7
NIPPON PRECISION CIRCUITS-8

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