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F2F MAGNETIC STRIPE ENCORDING CARD READER
M56710FP
MITSUBISHI <CONTROL / DRIVER IC>
I/O CIRCUIT
1
2
3
LDI, IB1, IB2 input circuit
INV input circuit
CLS, RDT, RCP output circuit
PIN FUNCTION DESCRIPTION
Pin
No.
Name
Function
LDI
F2F
PKO
PKI
AMP
HD2
HD1
VRF
GND
RCP
RDT
CLS
INV
IB2
IB1
CX2
CX1
VCC2
VCC1
1
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
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
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.
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
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 Vcc2).
Pin
name
LDI
IB1
IB2
VCC2
GND
VCC2
GND
CLS
RDT
RCP
INV
VCC2
GND