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Mitsubishi
Mitsubishi

M56710FP Datasheet Preview

M56710FP Datasheet

F2F MAGNETIC STRIPE ENCORDING CARD READER

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M56710FP pdf
MITSUBISHI <CONTROL / DRIVER IC>
M56710FP
F2F MAGNETIC STRIPE ENCORDING CARD READER
DESCRIPTION
The M56710FP is a semiconductor integrated circuit of BiCMOS
structure having an F2F demodulator function for magnetic card
reader.
FEATURES
q Low current dissipation (0.7mA when on standby as a standard)
q Provided with glance-over selection input (4, 8, and 16 bits)
q Provided with output polarity (“L” active or “H” active) switching
input
q Miniature mini-mold package
q Wide operating temperature range Ta = -20 – 75°C
APPLICATION
Magnetic card reader
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.
• 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.
PIN CONFIGURATION (TOP VIEW)
Read control input LDI 1
NC 2
F2F output F2F 3
Noise filter PKO 4
Differentiator input PKI 5
Amplifier output AMP 6
Amplifier (–) input HD2 7
Amplifier (+) input HD1 8
Standard voltage VRF
output
Grounding GND
9
10
20 VCC1 Power supply
19 VCC2 Power supply
18 CX1 Oscillation capacitor
17 CX2 Oscillation capacitor
16 IB1 Ignore bit 1
15 IB2 Ignore bit 2
14 INV Invert input
13 CLS Card travelling
signal output
12 RDT Read data output
11 RCP Read clock output
Outline 20P2N-A
NC: no connection
• 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”.
• 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
BLOCK DIAGRAM
Amplifier Differentiator
output input
Noise filter
AMP PKI
PKO
65
4
F2F output
F2F
3
Amplifier (-) input HD2 7
Amplifier (+) input HD1 8
Reference voltage output VRF 9
Read control input LDI 1
Ignore bit 2 IB2 15
Ignore bit 1 IB1 16
OP1
Reference
voltage
circuit
OP2
Sensitivity Waveform
setting
shaping
Control circuit
Oscillation capacitor CX2 17
Oscillation capacitor CX1 18
Oscillation
circuit
1/5
5TOSC
11 bit
downcounter
TOSC
1/7
7TOSC
11 bit
upcounter
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
10 GND



Mitsubishi
Mitsubishi

M56710FP Datasheet Preview

M56710FP Datasheet

F2F MAGNETIC STRIPE ENCORDING CARD READER

No Preview Available !

M56710FP pdf
I/O CIRCUIT
1 LDI, IB1, IB2 input circuit
LDI
IB1
IB2
VCC2
GND
3 CLS, RDT, RCP output circuit
VCC2
GND
CLS
RDT
RCP
MITSUBISHI <CONTROL / DRIVER IC>
M56710FP
F2F MAGNETIC STRIPE ENCORDING CARD READER
2 INV input circuit
INV
VCC2
GND
PIN FUNCTION DESCRIPTION
Pin Pin
No. name
Name
Function
1 LDI Read control input
Schmidt trigger input. At “L”, reset the internal digital circuit. At “H”, F2F modulation is possible.
3 F2F F2F output
F2F signal output that has amplified, differentiated and further waveform-shaped the magnetic head signal.
4 PKO Noise filter
Connect noise removing capacitor CNF between PKI and PKO.
5 PKI Differentiator input
Refer to PKO and AMP.
6 AMP Amplifier output
Connect resistor RPK and capacitor CPK between AMP and PKI.
7 HD2 Amplifier (–) input
Connect magnetic head between HD1 and HD2.
8 HD1 Amplifier (+) input
Connect magnetic head between HD1 and HD2.
9 VRF Reference voltage output Reference voltage output of Vcc 1/2
10 GND Grounding
11 RCP Read clock output
Clock pulse output after F2F modulation
12 RDT Read data output
Data output after F2F modulation
13 CLS Card travelling signal output Signal output indicating that card is travelling
14 INV Invert input
CLS, RDT and RCP output becomes “L” active at “H” (OPEN), and “H” active at “L”.
15 IB2 Ignore bit 2
Glance-over bit setting pin
16 IB1 Ignore bit 1
Glance-over bit setting pin
17 CX2 Oscillation capacitor
Connect capacitor COSC between CX1 and CX2 to set oscillation frequency.
18 CX1 Oscillation capacitor
Connect capacitor COSC between CX1 and CX2 to set oscillation frequency.
19 VCC2 Power supply
Digital circuit section power supply pin. Supply voltage is Vcc.
20 VCC1 Power supply
Analog circuit section power supply pin. Supply voltage is Vcc (same voltage as Vcc2).


Part Number M56710FP
Description F2F MAGNETIC STRIPE ENCORDING CARD READER
Maker Mitsubishi
Total Page 8 Pages
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