MITSUBISHI <CONTROL / DRIVER IC> M56710FP F2F MAGNETIC STRIPE ENCORDING CARD READER DESCRIPTION PIN CONFIGURATION (TOP VIEW) The M56710FP is a semiconductor integrated circuit of BiCMOS structure having an F2F demodulator function for magnetic card reader. Read control input FEATURES LDI → 1 20 VCC1 Power supply 19 VCC2 Power supply 18 CX1 Oscillation capacitor 4 17 CX2 Oscillation capacitor Noise filter PKO Differentiator input PKI → 5 Amplifier output AMP ← 6 Amplifier (–) input HD2 → 7 APPLICATION M56710FP 2 F2F output F2F ← 3 NC ● Low current dissipation (0.7mA when on standby as a standard) ● Provided with glance-over selection input (4, 8, and 16 bits) ● Provided with output polarity (“L” active or “H” active) switching input ● Miniature mini-mold package ● Wide operating temperature range Ta = -20 – 75°C Standard voltage VRF output Grounding GND FUNCTION Data signal which is read from magnetic card via magnetic head is input from HD2 and HD1 pins, and converted into F2F pattern signal by analog processing in amplifier OP1, differentiator OP2, sensitivity setting circuit and waveform shaping circuit. If F2F signal is input, the logic section glances over the prescribed number of bits set by IB1 and IB2 input before performing digital processing, and then outputs card reading signal CLS, read clock signal RCP, and read data signal RDT. INV turning to “L” switches each output of CLS, RCP and RDT from “L” active to “H” active. 12 → RDT Read data output 10 11 → RCP Read clock output NC: no connection • Output signal time width When letting the oscillation cycle of oscillation circuit be TOSC, • RCP output pulse width TOW • • • • • • • • • • • • • • • • • • • • • • • about 16TOSC • RCP delay time to RDT • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • about 8TOSC Amplifier (-) input HD2 7 Sensitivity setting OP1 signal output 9 • I/O discrimination Let the data bit time width of a data bit be TBn, and if there is one next FC between the FC at the end of that bit (i.e. the beginning of the next bit) to 5/7TBn, let the next bit (Bn+1) be data “1”, and, if there is no FC, be data “0”. Amplifier Differentiator Noise filter output input PKO AMP PKI 5 6 4 Amplifier (+) input HD1 8 14 ← INV Invert input Outline 20P2N-A • STANDARD BITS: Let the number of glance-over bits set by IB1 and IB2 be M. Let the Mth FC (flux change) through M+1st FC after LDI input is turned from “L” to “H” be a standard bit with a time width of TB0. I/O is discriminated from the next bit to this standard bit as a data bit. BLOCK DIAGRAM 15 ← IB2 Ignore bit 2 13 → CLS Card travelling Amplifier (+) input HD1 → 8 Magnetic card reader 16 ← IB1 Ignore bit 1 OP2 Reference voltage output VRF 9 F2F output F2F 3 Waveform shaping 20 VCC1 Power supply 19 VCC2 Power supply 14 INV Invert input 13 CLS Card travelling signal output 12 RDT Read data output 11 RCP Read clock output Reference voltage circuit Read control input LDI Ignore bit 2 IB2 1 Control circuit 15 Ignore bit 1 IB1 16 5TOSC 1/5 Oscillation capacitor CX2 17 Oscillation capacitor CX1 18 Oscillation circuit 11 bit downcounter 10 GND TOSC 1/7 7TOSC 11 bit upcounter MITSUBISHI <CONTROL / DRIVER IC> M56710FP F2F MAGNETIC STRIPE ENCORDING CARD READER I/O CIRCUIT 1 2 LDI, IB1, IB2 input circuit INV input circuit VCC2 VCC2 LDI IB1 IB2 INV GND 3 GND CLS, RDT, RCP output circuit VCC2 CLS RDT RCP GND PIN FUNCTION DESCRIPTION Pin No. 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pin name LDI F2F PKO PKI AMP HD2 HD1 VRF GND RCP RDT CLS INV IB2 IB1 CX2 CX1 VCC2 VCC1 Name Function Read control input F2F output Noise filter Differentiator input Amplifier output Amplifier (–) input Amplifier (+) input Reference voltage output Grounding Read clock output Read data output Card travelling signal output Invert input Ignore bit 2 Ignore bit 1 Oscillation capacitor Oscillation capacitor Power supply Power supply Schmidt trigger input. At “L”, reset the internal digital circuit. At “H”, F2F modulation is possible. F2F signal output that has amplified, differentiated and further waveform-shaped the magnetic head signal. Connect noise removing capacitor CNF between PKI and PKO. Refer to PKO and AMP. Connect resistor RPK and capacitor CPK between AMP and PKI. Connect magnetic head between HD1 and HD2. Connect magnetic head between HD1 and HD2. Reference voltage output of Vcc 1/2 Clock pulse output after F2F modulation Data output after F2F modulation Signal output indicating that card is travelling CLS, RDT and RCP output becomes “L” active at “H” (OPEN), and “H” active at “L”. Glance-over bit setting pin Glance-over bit setting pin Connect capacitor COSC between CX1 and CX2 to set oscillation frequency. Connect capacitor COSC between CX1 and CX2 to set oscillation frequency. Digital circuit section power supply pin. Supply voltage is Vcc. Analog circuit section power supply pin. Supply voltage is Vcc (same voltage as Vcc 2). MITSUBISHI <CONTROL / DRIVER IC> M56710FP F2F MAGNETIC STRIPE ENCORDING CARD READER GLANCE-OVER BIT SETTING AND TIMING BY IB1 AND IB2 IB2 input IB1 input Number of glance-over bits L L 4 L H 8 H L 16 H H — Description • Internal digital circuit is reset with LDI input at “L”. • LDI input may be at “H” at all times. • CLS output turns to “L” after counting the flux change FC (change in the status of F2F) of the number of glance-over bits, and returns to “H” when BIC (bit interval counter) has fully counted. (At “L” active). — • IB2, IB1: “L”, “L” TBO : Reference bit x 1 2 3 4 F2F LDI BIC full count CLS About 14300 TOSC OPERATING TIMING DIAGRAM IB2, IB1 : “L”, “L” INV : “H” HD2 - HD1 F2F TB0 TBn TBn+ LDI Reference bit 5/7TBn (5/7) Bit 1/0 discrimination signal CLS RCP RDT 0 0 0 0 1 0 1 1 0 RDT data is output 1 bit behind F2F data. HD2 - HD1 F2F LDI (5/7) CLS RCP RDT 0 0 0 0 1 0 0 0 0 0 0 1 0 1 1 0 0 MITSUBISHI <CONTROL / DRIVER IC> M56710FP F2F MAGNETIC STRIPE ENCORDING CARD READER ABSOLUTE MAXIMUM RATINGS (Ta = -20 – 75°C, unless otherwise noted) Symbol VCC VI VI IO VID Topr Tstg Parameter Conditions VCC1, VCC2 LDI, IB1, IB2, INV HD1, HD2 CLS, RDT, RCP Between HD2 and HD1 pins Supply voltage Input voltage Input voltage Output voltage Differential input voltage Operating temperature Storage temperature Ratings Unit -0.3 – +6.5 -0.3 – VCC+0.3 -0.3 – VCC+0.3 -10 – +10 -1.2 – +1.2 -20 – 75 -55 – 125 V V V mA V °C °C Note 1: Voltage is based on GND pin of the circuit (0V), unless otherwise noted. 2: Direction of the current flowing into the circuit is represented by “positive” (without code) and that flowing out of the circuit by “negative” (- code). RECOMMENDED OPERATING CONDITION (Ta = -20 – 75°C, unless otherwise noted) Symbol VCC VI VIH VIL IOH IOL VIN fIN fOSC COSC COSC RPK CPK CNF RPF – CVC CVR Parameter Supply voltage Input voltage “H” input voltage “L” input voltage “H” output current “L” output current Differential input voltage Input frequency Oscillation frequency External capacitor External capacitor External resistor External capacitor External capacitor External resistor – External capacitor External capacitor Test conditions VCC1, VCC2 LDI IB1, IB2, INV IB1, IB2, INV CLS, RDT, RCP CLS, RDT, RCP HD2-HD1 HD2-HD1 CX1, CX2 CX1, CX2 AMP PKI PKI, PKO PKI, F2F VCC1, VCC2 VRF VCC1 and VCC2 shall have the identical voltage. fOSC = 1/TOSC fOSC ∞ 1/COSC Min. 4.0 0 0.8VCC 0 -0.5 0 3 0.3 0.2 25 Reference value when corresponding to 210BPI Reference value when corresponding to 210BPI Reference value when corresponding to 210BPI Reference value Reference value Reference value Reference value 0.8 Limits Typ. 5 33 470 0.033 220 4.7 – 0.1 1 Unit Max. V 5.5 V VCC V VCC V 0.2VCC mA 0 mA 5 mVp-p 80 kHz 15 MHz 2 pF 100 pF Ω µF pF MΩ 2 µF µF MITSUBISHI <CONTROL / DRIVER IC> M56710FP F2F MAGNETIC STRIPE ENCORDING CARD READER ELECTRICAL CHARACTERISTICS (Ta = -20 – 75°C and VCC = 5V, unless otherwise noted) Symbol VTH Test conditions Parameter Threshold voltage IB1, IB2, INV VCC = 4 – 5.5V IOL = 10µA VCC = 4V IOL = 5mA IOH = -10µA VCC = 4V IOH = -0.5mA VCC = 5.5V, VI = 0V VCC = 5.5V, VI = 0V VCC = 5.5V, VI = 5.5V VCC = 5.5V, VI = VTH VIN = 0mVp-p fIN = 1kHz VIN = 80mVp-p sine wave Test circuit Limits Typ.∗ Max. – 0.7VCC 0.2 – 0.4 – – – – – +10 – -10 – +10 – -50 – 2.7 2.5 Unit – 2 2 2 2 2 2 2 2 1 Min. 0.3VCC – – 3.8 3.2 -10 -80 -10 -250 2.3 3 18 20 24 Double V V V V V µA mA µA µA V VOL “L” output voltage CLS, RDT, RCP VOH “H” output voltage CLS, RDT, RCP IIL IIL IIH IIT+ VREF “L” input current “L” input current “H” input current Positive threshold current Reference voltage LDI, IB1, IB2 INV LDI, IB1, IB2, INV INV VRF GV11 Voltage gain 1 OP1 GV21 Voltage gain 2 OP1 fIN = 15kHz VIN = 80mVp-p sine wave 3 18 20 24 Double RIN1 Input resistance OP1 fIN = 1kHz VIN = 80mVp-p sine wave 3 7 10 14 kΩ VOPP1 Maximum output voltage OP1 3 2 – – VP-P IIL2 IIH2 VTH+2 VTH-2 VTHD2 “L” sensitivity current “H” sensitivity current Positive threshold voltage Negative threshold voltage Threshold differential voltage PKI – F2F PKI – F2F PKI – F2F PKI – F2F PKI – F2F 4 4 5 5 – – 0.3 0.2 -0.7 -0.15 – – 0.45 -0.45 – -0.3 – 0.7 -0.2 0.15 µA µA V V V VPKO Pin voltage range PKO 4 -1.2 – 1.2 V VOL3 VOH3 VTH+4 VTH-4 VHY4 ICCW “L” output voltage “H” output voltage Positive threshold voltage Negative threshold voltage Hysterisis width Standby circuit current F2F F2F LDI LDI LDI VCC1, VCC2 5 5 6 6 – 1 – 4.5 2.5 1.5 0.5 – – – – – – 0.7 0.5 – 3.5 2.7 1.5 1.0 V V V V V mA ICCR Operating circuit current VCC1, VCC2 1 – 1.9 2.4 mA fOSC TOW TOD TNW Oscillation frequency Output pulse width Intra-output delay time Input noise width RCP RCP RDT, RCP INV 1 7 7 7 0.75 15 7 0.5 – 16 8 – 1.5 17 9 – MHz µs µs µs fIN = 1kHz sine wave THD AMP = 5% VM, F2F < 0.5V VM, F2F > 4.5V On the VRF basis On the VRF basis (VTH+2) - VTH-2 On the VRF basis IPKI = 1mA – +1mA VPKI = 0V, IF2F = 0.5mA VPKI = 5V, IF2F = -0.5mA (VTH+4) - (VTH-4) VIN = 0mVp-p fIN = 8.2kHz VIN = 68mVp-p sine wave fOSC = 1MHz COSC = 33pF fOSC = 1MHz fOSC = 1MHz Note: Min. and max. limits do not represent absolute values. ∗: Typ. limits represent standard values when Ta = 25°C and VCC = 5V. MITSUBISHI <CONTROL / DRIVER IC> M56710FP F2F MAGNETIC STRIPE ENCORDING CARD READER TEST CIRCUIT: On the following drawing, COSC = 33pF, RPK=470Ω, CPK = 0.033µF, CNF = 470pF, CVR = 1µF 1. Testing of VREF, ICCW, ICCR, fOSC 2. Testing of VOL, VOH, IIL, IIH, IIT+ VCC ICCW ICCR A LDI VCC LDI VCC1 VCC2 VCC1 VCC2 PKO CX2 PKO CX2 IIH IIL IIT+ PKI IB1 PKI IB1 A AMP IB2 AMP IB2 HD2 INV CX1 F2F F2F CX1 COSC CNF COSC RPK CPK VIN, fIN V VREF INV HD2 HD1 CLS HD1 CLS VRF RDT fosc VRF RDT GND RCP Oscilloscope GND RCP CVR VI VOL VOH RCP fOSC = TOW Note: Short the IB1 and IB2 to the GND when those pins are not used for testing. 16 TOW 3. Testing of GV11, GV21, RIN1, VOPP1 4. Testing of IIH2, IIL2, VPKO VCC LDI VCC LDI VCC1 VCC2 F2F THD meter (ON at VOPP1) IOL IOH V VCC2 CX1 CNF VCC1 F2F CX1 COSC COSC PKO CX2 PKO CX2 PKI IB1 PKI IB1 AMP IB2 AMP IB2 RPK CPK (OFF at RIN) VM.AMP 10kΩ V VOPP1 10kΩ HD2 INV HD1 CLS VRF RDT GND RCP CVR VM.F2F VM.PKO V IPKI IIH2 IIL2 CVR HD2 INV HD1 CLS VRF RDT GND RCP VIN, IIH GV11 = RIN1 = VM.AMP VIN 2VM.AMP x 10(kΩ) GV11·VIN - VM.AMP IIL2 is PKI input current providing VM.F2F < 0.5V. IIH2 is PKI input current providing VM.F2F > 4.5V. VPKO = VM.PKO - VREF MITSUBISHI <CONTROL / DRIVER IC> M56710FP F2F MAGNETIC STRIPE ENCORDING CARD READER 5. Testing of VTH+2, VTH-2, VOL3, VOH3 6. Testing of VTH+4, VTH-4 VCC LDI F2F VCC1 LDI VM.F2F VOL3 VOH3 VCC2 VLDI CX1 F2F CX1 COSC 5kΩ V VCC1 VCC2 (ON at VOL3 and VOH3) IF2F VCC 5kΩ VPKI PKO CX2 PKO CX2 PKI IB1 PKI IB1 AMP IB2 AMP IB2 HD2 INV HD2 INV HD1 CLS HD1 CLS VRF RDT VRF RDT CVR GND RCP GND VTH+2 = VREF-VPKIVTH-2 = VREF-VPKI+ VCC VPKI 0V VM.CLS V VPKI+ VPKI- VCC VTH+4 VTH-4 VLDI “H” 0V “H” VM.F2F “L” VM.CLS “L” RCP 7. Testing of TOW, TOD, TNW RCP TOW VCC RDD TOD LDI VCC1 CLK Logic pattern generator VCC2 F2F CX1 PKO CX2 PKI IB1 AMP IB2 fosc duty 50% CLK HD2 INV HD1 CLS VRF RDT GND RCP Oscilloscope CVR Noise input VCC INV 0V RCP 5kΩ (ON at TNW) TOD TNW TNW, a negative noise put into INV input, is the maximum time interval not considered INV input. MITSUBISHI <CONTROL / DRIVER IC> M56710FP F2F MAGNETIC STRIPE ENCORDING CARD READER APPLICATION EXAMPLE When setting the glance-over bit to 16 bits to let it be “L” active output 5V 1 LDI VCC1 20 2 VCC2 19 CVC 3 F2F CX1 18 4 PKO CX2 17 5 PKI IB1 16 6 AMP IB2 15 7 HD2 INV 14 8 HD1 CLS 13 9 VRF RDT 12 10 GND RCP 11 COSC RPF CNF CPK RPK CVR