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What is DS1410E?

This electronic component, produced by the manufacturer "Dallas Semiconductor", performs the same function as "Parallel Port Adapter".


DS1410E Datasheet PDF - Dallas Semiconductor

Part Number DS1410E
Description Parallel Port Adapter
Manufacturers Dallas Semiconductor 
Logo Dallas Semiconductor Logo 


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www.dalsemi.com
DS1410E
Parallel Port Adapter
FEATURES
§ Provides a parallel port interface for Dallas iButtons
§ Compatible with low-power parallel ports
§ No external power required
§ Operates with DOS, Windows, Windows 95, Windows
NT, SCO UNIX, UNIXWARE, and HP_UX for
workstations
www.DatDaSEhSeeCt4RUI.PcoTmION
The DS1410E Parallel Port Adapter interfaces Dallas Semiconductor Authorization iButtons to host
computers via a PC parallel port. In conjunction with the iButton, the DS1410E provides a high security
storage vault for critical execution control information. Only users who posses an iButton can utilize the
software, preventing execution of unauthorized copies.
The modularity of the DS1994 allows for easy feature customization. The device supports the insertion of
two iButtons, which can be removed and replaced to vary functionality.
For example, a DS1994 Time iButton can be programmed for a 30-day expiration, issued with a
DS1410E and a software copy. The evaluator can be converted into a registered user by issuing a DS1991
Multi iButton and inserting it into the second receptacle. The DS1410E supports the same iButtons as
other Dallas port adapters. This allows standardization of any protection scheme across virtually all
hardware platforms, regardless of the operating system. The iButtons remain constant, and the port
adapters change according to the specific platform interface.
DS1410E SOFTWARE
The DS1410k Development Kit contains access system software which must be linked with the
application software in order to complete integration. The support for the application development
environments and operating systems lies in the interface software of the access system. The access system
contains the low-level interface for communicating with the iButtons.
OPERATION
The DS1410E utilizes a DS1481 1-WireTM Bus Master to communicate with iButtons. The DS1481
generates either a read/write bit “time slot” or a reset on the I/O pin (1-Wire bus). The operation
performed is determined by the states of input pins 2 and 3 on the port adapter as follows:
TIME SLOT
Read 0, Read1, Write 1
Write 0
1-Write Reset
PIN 2
logic high
logic low
logic high
PIN 3
logic high(see Figure 1)
logic high (see Figure 2)
logic low (See Figure 3)
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DS1410E equivalent
HOST INTERFACE TIMING DIAGRAMS Figure 3 (cont’d)
DS1410E
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PIN
Input pin
14 ( EN I)
I/O
I
Input pin 11
(O1/ BSY1)
O
Input pin 13
(O2/ BSY2 )
O
Input pin 2
(D/ CLK )
Input pin 3
( RES )
Output Pin 11
(I1)
Output Pin 13
(I2)
I
I
I
I
Output Pin 14
( ENO )
I/O
O
I/O
tPDH = 2 µs (TYPICAL)
tBLR = 960 µs (MINIMUM) (OD = 0
tBLB = 96 µs (MINIMUM) (OD = 1)
1- WIRE RESET
DESCRIPTION
Chip enable, driven low to begin 1-Wire I/O.
Driven low during time slot (to indicate a DS1481 busy condition). Set to state
of I1 after time slot has finished. (O1/ BSY1) will go low after D/ CLK goes low
if sample of I/O communication was low. Returns to state I1 when ENI goes
back high (see Figure).
Driven low during time slot (to indicate a DS1481 busy condition). Set to state
of 12 after time slot has finished. O2/ BSY2 will go low after D/ CLK goes low
if sample of I/O communication was low. Returns to state of 12 when ENI
goes back high (see Figure).
Data/Clock pin. Used to specify type of time slot before communication
begins. After the time slot has been completed this pin is driven low in order to
solicit the result of the time slot.
Set low (before ENI is driven low) to specify that a reset pulse should be
generated on the I/O pin.
Can be connected to the O1/ BSY1of another DS1481. May also be connected
to a parallel port printer’s BUSY signal. Internally pulled high via a weak
resistor.
Can be connected to the O2/ BSY2 of another DS1481. Can also be connected
to a parallel port printer SELECT OUT signal. Internally pulled high via a
weak resistor
Set to ENI if not the last part on port. Open drain output with weak internal
pullup resistor.
1-Wire I/O line. Bi-directional line with open drain output.
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