參數(shù)資料
型號(hào)： AD8151ASTZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 18/40頁(yè)
文件大?。?/td> 0K
描述： IC CROSSPOINT SWIT 33X17 184LQFP
標(biāo)準(zhǔn)包裝： 1
系列： XStream™
功能： 交叉點(diǎn)開(kāi)關(guān)
電路： 1 x 33:17
電壓電源： 雙電源
電壓 - 電源，單路/雙路(±)： ±3 V ~ 5.25 V
工作溫度： 0°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 184-LQFP
供應(yīng)商設(shè)備封裝： 184-LQFP（20x20）
包裝： 托盤(pán)
AD8151
Rev. B | Page 25 of 40
CONFIGURATION PROGRAMMING
The board is configurable by one of two methods. For ease of
use, custom software is provided that controls the AD8151
programming via the parallel port of a PC. This requires a
standard printer cable that has a DB-25 connector at one end
(parallel-port or printer-port interface) and a Centronix
connector at the other, which connects to P2 of the AD8151
evaluation board. The programming with this setup is serial, so
it is not the fastest way to configure the AD8151 matrix.
However, the user interface makes it very convenient to use this
programming method.
If a high speed programming interface is desired, the AD8151
address and data buses are directly available on P3. The source
of the program signals can be a piece of test equipment such as
the Tektronix HFS-9000 digital test generator or other hardware
that generates programming signals. When using the PC inter-
face, the jumper at W1 should be installed and no connections
should be made to P3. When using the P3 interface, no jumper
is installed at W1. There are locations for termination resistors
for the address and data signals, if needed.
SOFTWARE INSTALLATION
The software to operate the AD8151 is provided on two 3.5"
floppy disks. To install the software on a PC:
1.
Insert Disk 1 into the floppy disk drive.
2.
Run the setup.exe program. This program routinely installs
the software.
3.
Insert Disk 2 when prompted.
4.
Select a program directory when prompted.
After running the software, the user is prompted to identify
which of three software drivers is used with the PC parallel
port. The default is LPT1, which is most commonly used.
However, some laptops commonly use the PRN driver. It is also
possible that some systems are configured with the LPT2 driver.
If it is not known which driver is used, it is best to select LPT1
and proceed to the next screen, which displays the buttons that
allow the connection of inputs to outputs of the AD8151. All of
the outputs should be in the output off state after the program
starts running. Any of the active buttons can be selected by
clicking the mouse, which sends out a burst of programming
data.
After the software driver has been selected, the user can
generate a steady stream of programming signals out of the
parallel port by holding down the left or right arrow key on the
keyboard. The clock test point on the AD8151 evaluation board
can be monitored with an oscilloscope for any activity (a user-
supplied printer cable must be connected). If there is a square-
wave present, the proper software driver is selected for the PC’s
parallel port.
If there is no signal present, select another driver by clicking
Parallel Port
on the File menu. Select a different software
driver and carry out the test described previously until signal
activity is present at the clock test point.
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