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Renesas Electronics Components Datasheet

M56710FP Datasheet

F2F Magnetic Stripe Encoding Card Reader

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M56710FP pdf
M56710FP
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F2F Magnetic Stripe Encoding Card Reader
REJ03F0175-0201
Rev.2.01
Mar 31, 2008
Description
The M56710FP is a semiconductor integrated circuit of Bi-CMOS structure having an F2F demodulator function for
magnetic card reader.
Features
Low current dissipation (0.7 mA 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 to 75°C
Application
Magnetic card reader
Functional Description
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.
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 16 TOSC
RCP delay time to RDT: about 8 TOSC
REJ03F0175-0201 Rev.2.01 Mar 31, 2008
Page 1 of 13


Renesas Electronics Components Datasheet

M56710FP Datasheet

F2F Magnetic Stripe Encoding Card Reader

No Preview Available !

M56710FP pdf
M56710FP
Block Diagram
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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
Oscillation capacitor CX1 18 circuit
1/5
5TOSC
11 bit
downcounter
TOSC
7TOSC
11 bit
1/7 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
Pin Arrangement
M56710FP
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 output VRF 9
Grounding GND 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
(Top view) NC: no connection
Outline: PRSP0020DA-A (20P2N-A)
REJ03F0175-0201 Rev.2.01 Mar 31, 2008
Page 2 of 13


Part Number M56710FP
Description F2F Magnetic Stripe Encoding Card Reader
Maker Renesas Technology
Total Page 14 Pages
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