Z32AN00NW200SG Zilog, Z32AN00NW200SG Datasheet - Page 73

• Manufacturer Part Number: Z32AN00NW200SG
• Description: IC ARM922T MCU 200MHZ 256-BGA
• Manufacturer: Zilog
• Series: Encore!® 32r

Specifications of Z32AN00NW200SG

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, IrDA, SmartCard, SPI, UART/USART, USB OTG
• Peripherals: DMA, LCD, Magnetic Card Reader, POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Type: ROMless
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 1.71 V ~ 3.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-LBGA
• For Use With: 269-4713 - KIT DEV ENCORE 32 SERIES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: 269-4717

Z32AN Series Data Sheet
Chapter 9: Magnetic Card Reader (MCR)
9.1
DS0200-003
The Magnetics Card Reader Module is depicted below. Features:
Magnetic Card Reading Overview
Figure 9-1 shows an example of magnetic card bit encoding, derived from a single magnetic card track. The
signal contains a series of alternating peaks occurring once or twice within a single bit time. Logic ‘0’ is
encoded as one transition per bit; logic ‘1’ is encoded as two transitions. Although the bit rate will vary and
distortions will occur for various reasons, the bit rate is relatively constant from bit-to-bit and the delta time
between alternating peaks can be used to decode the series of ‘1’s and ‘0’s.
The Z32AN Series MCR can be configured to generate a stream of delta-time integers which can be
processed by the user to decode the magnetic card stripes. These delta time values appear in a FIFO along
with the associated track number which can be processed by the user’s bit decoder application. A ‘1’ can be
identified by the fact that it consists of two delta-time integers roughly equal to the single delta-time integer
of a ‘0’.
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Support for 3 simultaneous tracks
Direct mode operation supports direct connection to magnetic heads
Bypass mode operation supports digital inputs from magnetic card readers
Automatic peak detection and delta-time generation
Accurate peak detection between 20mV and 400mV peak-to-peak
Up to 266kHz sampling resolution per channel to support bit rates of 150bps to 12,000bps
A single 8-deep, 32-bit FIFO
Raw ADC sample access
DMA support
Interrupt support
Figure 9-1: Magnetic Card Bit encoding
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