SM8220/SM8221 Calling Number Identification Receiver IC NIPPON PRECISION CIRCUITS INC. 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 •Uses 3.579545 MHz crystal (SM8220) or external •Integrated band pass filter clock source •Power supply voltage: 3V to 5.5V •FSK demodulator Bell 202 and ITU-T V.23 •High input sensitivity: −48 dBm typical •Low power consumption •Ring detect output •Package •Carrier Detect Output (SM8220) •Power down mode: 1µA power down current •Molybdenum-gate CMOS process SM8220: 16 pin SOP, 16 pin DIP SM8221: 8 pin SOP, 8 pin DIP APPLICATIONS •Calling Number Delivery service •Feature Phones •Adjunct Boxes •Fax Machines •Telephone Answering Machines •Computer Interface Products PINOUT(Top View) SM8220S (16pin SOP) TIP 1 16 RING RDIN RDRC RDET PDWN GND 8 9 TIP 1 8221 PDWN GND 8 4 5 VDD FOUT DMIN AGND DMIN DOUT RDIN NC RDRC CDET RDET OSCOUT OSCIN /CLKIN VDD GND NC CDET 8 9 OSCOUT OSCIN /CLKIN SM8221P (8pin DIP) TIP DOUT RING CDET PDWN CLKIN DOUT PDWN GND 1 4 SM 82 2 1 P TIP 16 RING SM8221S (8pin SOP) RING 1 FOUT SM 82 20 P SM 8220 S AGND VDD SM8220P (16pin DIP) 8 VDD DOUT CDET 5 CLKIN NIPPON PRECISION CIRCUITS-1 SM8220/SM8221 PACKAGE DIMENSIONS(Unit: mm) 8.13 to 9.40 6.35 0.13 0.06 0.25 19.05 3.30 9.89 0.09 7.49 to 8.13 SM8220P (16 pin DIP) 6.00 0.20 3.90 0.09 SM8220S (16 pin SOP) 2.54 6.35 25 3.30 1.52 3.18 0.10 to 0.25 1.35 to 1.75 0 to 8 0.41 to 1.27 2.54 0.46 3.68 to 4.32 0.38 to 1.02 0.25 8.89 0.36 to 0.46 1.10 to 1.65 8.13 to 9.40 SM8221P (8 pin DIP) 0.19 to 0. 4.80 to 4.98 1.27 1.52 5.80 to 6.20 3.81 to 3.99 SM8221S (8 pin SOP) 0.46 0.38 to 1.02 3.68 to 4.32 0.84 0.43 7.49 to 8.13 0.25 M 3.18 0.10 0.41 0.05 0.175 0.075 1.55 0.20 1.375 0.275 0 to 8 1.27 BLOCK DIAGRAM FOUT* TIP RING OSCIN* /CLKIN OSCOUT* DMIN* Band Pass Filter (SM8221) FSK Demodulator DOUT Carrier Detect CDET Power Down Control and Clock Generator PDWN RDIN* RDET* RDRC* AGND* VDD GND *: Not available for SM8221. NIPPON PRECISION CIRCUITS-2 SM8220/SM8221 PIN DESCRIPTIONS Number Name i/o 1 TIP i 2 2 RING i 3 - AGND o Analog Ground: 1/2 VDD voltage output. This pin must be grounded through 0.1 µF capacitor. 4 - RDIN si Ring Detect Input: The attenuated ring signal is connected to this pin for the ring detection. 5 - RDRC od Ring Detect RC Terminal: An RC network will be connected to this pin to set time delays for 6 - RDET o 7 3 PDWN si SM8220 SM8221 1 Function 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. 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 4 9 5 GND - Device Ground: This pin is connected to the system ground. OSCIN i Crystal Oscillator Input: A crystal will be connected between this pin and OSCOUT pin. /CLKIN This pin may be driven from an external clock source. 10 - OSCOUT o 11 6 CDET o Carrier Detect Output: When low, this output indicates that a valid carrier present on the line. 12 - NC - No connection pin. 13 7 DOUT o Data Out: This pin presents the output of the demodulator while CDET pin is low. 14 - DMIN i 15 - FOUT o 16 8 VDD - 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. When CDET pin goes high, this pin is held high. Demodulator Input: This pin is connected from FOUT pin through a 0.1µF capacitor. No other components should be connected to this pin. Band Pass Filter Output: This pin is connected to DMIN pin through a 0.1µF 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. NIPPON PRECISION CIRCUITS-3 SM8220/SM8221 ABSOLUTE MAXIMUM RATINGS (GND= 0V unless otherwise noted) Rating Unit Parameter Symbol Supply Voltage VDD Condition −0.5 to 7.0 V Input Voltage VIN −0.3 to VDD+0.3 V Input Current IIN ±10 mA Power Dissipation PD 120 mW Operating Temperature Range Ta −20 to 85 °C Storage Temperature Range TSTG −40 to 125 °C Soldering Temperature TSLD 255 °C Soldering Time tSLD 10 sec ELECTRICAL CHARACTERISTICS DC CHARACTERISTICS (VDD= 5±0.5 V, GND = 0 V, fCLK = 3.579545 MHz, Ta = −20 to 85 ˚C unless otherwise noted) Rating Parameter Symbol Condition DC Supply Voltage VDD Supply Current IDD *1 Power Down Current IDPD Input Low Voltage1 MIN TYP MAX 5 5.5 V 1.7 3 mA *2 1 µA VIL1 OSCIN/CLKIN pin 0.3VDD V Input High Voltage1 VIH1 OSCIN/CLKIN pin Input Low Voltage2 VIL2 PDWN, RDIN, RDRC pin Input High Voltage2 VIH2 PDWN, RDIN, RDRC pin Output Low Voltage VOL DOUT, RDET, CDET, RDRC Output High Voltage VOH DOUT, RDET, CDET pin Input Leakage Current IIN OSCIN/CLKIN, PDWN, RDIN Output Leakage Current IOFF RDRC pin, RDIN= 0V Input DC Resistance RIN TIP, RING pin, VDD= 5V 3 Unit VOSCOUT= 0.8VDD 0.7VDD V VOSCOUT= 0.2VDD 2 0.75VDD 0.3VDD 3 V V 0.4 V pin, VDD= 4.5V, IOL= 1.6mA 3.7 V VDD= 4.5V, IOH= −1.6mA −1 1 µA 1 µA 325 kΩ pin, VDD= 5.5V, VIN= 0 or 5V VDD= 5.5V,VOH= 5.5V 175 250 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 NIPPON PRECISION CIRCUITS-4 SM8220/SM8221 AC CHARACTERISTICS (VDD= 5.0V, GND= 0V, fCLK= 3.579545MHz, Ta= −20 to 85 ˚C, 0dBm= 0.7746Vrms @ 600Ω unless otherwise noted) Rating Parameter Symbol Condition MIN TYP MAX −48 Input Sensitivity TIP, RING pin TIP, RING pin VDD= 5V −15 Input Level VDD= 3V −18 Band Pass Filter Frequency Response 60Hz −80 (relative to 1700 Hz @ −34 dBm 1200 Hz −1 input level) 2200Hz 0 4000Hz −43 ≥10000Hz −54 Carrier Detect ON Sensitivity CDON CDET pin −48 Carrier Detect OFF Sensitivity CDOFF CDET pin Oscillator Frequency fCLK −55 −51 −0.1% 3.579545 Unit dBm dBm dB −44 dBm +0.1% MHz dBm TYPICAL BAND-PASS FILTER FREQUENCY RESPONSE (Relative to 1700 Hz @ −34 dBm input level) 20 0 Gain (dB) -20 -40 -60 -80 -100 0 1000 2000 3000 4000 Frequency (Hz) SWITCHING CHARACTERISTICS (VDD= 5.0V, GND= 0V, fCLK= 3.579545MHz, Ta= 25 ˚C, CL= 50pF unless otherwise noted) Rating Parameter Symbol Condition MIN TYP MAX Unit Power Down Low to tDOSC 5 ms tSUPD 10 ms tDAQ tDCH 10 ms 10 ms Oscillator Start Up Power Down Low to FSK Data Detect Carrier Detect Acquisition Time End of Data to Carrier Detect High 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 ITU-T V.23 Continuous - phase binary frequency shift keying (FSK) Logical 1 (Mark) 1200 ± 12Hz 1300 ± 22Hz Logical 0 (Space) 2200 ± 22Hz 2100 ± 22Hz Carrier Frequency 1700Hz 1700Hz Transmission rate 1200BPS 1200BPS Data format serial, asynchronous serial, asynchronous Bellcore GR-30-CORE Data Format 1st Ring 2nd Ring 101010... 1 Data Single Message Format Channel Seizure Signal Mark Signal Message Type Word * Message Length Word Message Words * * Checksum Word *: Mark bits 1st Ring 2nd Ring 101010... 1 Data Multi Message Format Channel Seizure Signal Parameter * Type Word Mark Signal Parameter Length * Word Message Type Word * Message Length Word Parameter Words * Parameter * Type Word * Parameter Length * Word Parameter * Type Word Parameter Words Parameter Length * Word * Parameter Words * Checksum Word *: Mark bits NIPPON PRECISION CIRCUITS-6 SM8220/SM8221 TIMING DIAGRAM 1st Ring 2nd Ring INPUT (TIP, RING) 101010... 1 Data VIH2 RDRC* VIL2 RDET* PDWN tSUPD CDET tDAQ DOUT tDCH 101010... 1 Data OSCOUT* tDOSC *: Not available for SM8221. TYPICAL APPLICATION CIRCUIT SM8220 0.001µF 91kΩ (240kΩ) Protection Network TIP 0.001µF 91kΩ (240kΩ) +5V RING FOUT AGND DMIN RDIN DOUT RDRC NC RDET CDET 10µF 0.1µF 0.2µF From TIP 0.2µF From RING ( ) = When 3V range VDD 0.1µF Controller 270kΩ 470kΩ 33kΩ PDWN 0.2µF OSCOUT 3.579545 MHz OSCIN /CLKIN GND LCD Driver LCD Display +5V SM8221 0.001µF 91kΩ (240kΩ) Protection Network 0.001µF 91kΩ (240kΩ) TIP VDD RING DOUT PDWN CDET ( ) = When 3V range 10µF Controller From TIP GND CLKIN 3.579545MHz 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. 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 NC9508DE 1998. 7 NIPPON PRECISION CIRCUITS-8