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參數(shù)資料
| 型號(hào)： | AD8116JSTZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 18/29頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC VIDEO CROSSPOINT SWIT 128LQFP |
| 產(chǎn)品變化通告： | Mold Change 11/Jul/2012 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 功能： | 視頻交叉點(diǎn)開關(guān) |
| 電路： | 1 x 16:16 |
| 電壓電源： | 雙電源 |
| 電壓 - 電源，單路/雙路(±)： | ±4.5 V ~ 5.5 V |
| 電流 - 電源： | 75mA |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 128-LQFP |
| 供應(yīng)商設(shè)備封裝： | 128-LQFP（14x14） |
| 包裝： | 托盤 |
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AD8116
–24–
REV. B
Controlling the Evaluation Board from a PC
The evaluation board include Windows-based control software
and a custom cable that connects the board’s digital interface
to the printer port of the PC. The wiring of this cable is shown
in Figure 18. The software requires Windows 3.1 or later to
operate. To install the software, insert the disk labeled “Disk #1
of 2” in the PC and run the file called SETUP.EXE. Additional
installation instructions will be given on-screen. Before begin-
ning installation, it is important to terminate any other Windows
applications that are running.
RESET
CLK
DATA IN
DGND
CE
UPDATE
MOLEX 0.100" CENTER
CRIMP TERMINAL HOUSING
1
6
D-SUB 25 PIN
(MALE)
14
1
25
13
EVALUATION BOARD
PC
2
3
4
5
6
25
3
1
4
5
2
6
SIGNAL
CE
RESET
UPDATE
DATA IN
CLK
DGND
MOLEX
TERMINAL HOUSING
D-SUB-25
Figure 18. Evaluation Board-PC Connection Cable
When you launch the crosspoint control software, you will be
asked to select the printer port you are using. Most modern PCs
have only one printer port, usually called LPT1; however, some
laptop computers use the PRN port.
Figure 19 shows the main screen of the control software in its
initial reset state (all outputs off). Using the mouse, any input
can be connected with one or more outputs by simply clicking
on the appropriate radio buttons in the 16
× 16 on-screen array.
Each time a button is clicked on, the software automatically
sends and latches the required 80-bit data stream to the
evaluation board. An output can be turned off by clicking the
appropriate button in the Off column. To turn off all outputs,
click on RESET.
The software offers volatile and nonvolatile storage of configu-
rations. For volatile storage, up to two configurations can be
stored and recalled using the Memory 1 and Memory 2 Buffers.
These function in an identical fashion to the memory on a
pocket calculator. For nonvolatile storage of a configuration, the
Save Setup and Load Setup functions can be used. This stores
the configuration as a data file on disk.
Overshoot on PC Printer Ports’ Data Lines
The data lines on some printer ports have excessive overshoot.
Overshoot on the pin that is used as the serial clock (Pin 6 on
the D-Sub-25 connector) can cause communication problems.
This overshoot can be eliminated by connecting a capacitor
from the CLK line on the evaluation board to ground. A pad
has been provided on the solder-side of the evaluation board to
allow this capacitor to be soldered into place. Depending upon
the overshoot from the printer port, this capacitor may need to
be as large as 0.01
F.
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