Datasheet

Evaluates: MAX3420E
MAX3420E Evaluation Kit-2
2 _______________________________________________________________________________________
Component List (continued)
DESIGNATION QTY DESCRIPTION
U2 1
MAX6349TLUT+ (SOT23-6)
Topmark AAJQ
U3 1
20MHz 8-bit RISC microcontroller
Atmel ATtiny2313-20SU
(20-pin SOIC)
DESIGNATION QTY DESCRIPTION
Y1 1
12MHz crystal; 18pF load
(HCM49 SMD case)
Citizen HCM49-12.000MABJ-UT
11 Shunts
4 Rubber bumps
1 MAX3420EEVKIT-2+ PCB
Quick Start
Recommended Equipment
MAX3420 EV kit-2 (USB cable included)
A user-supplied Windows
®
2000/XP PC with spare
USB port
Note: In the following sections, software-related items
are identified by bolding. Text in bold refers to items
directly from the EV kit software. Text in bold and
underlined refers to items from the Windows 2000/XP
operating system.
Procedure
The MAX3420E EV kit-2 is fully assembled and tested.
Follow the steps below to verify board operation.
1) Verify that all jumpers (JU1–JU11) are in the default
1-2 position.
2) Connect the included USB cable from the PC’s
USB port (Type A) to the USB connector (Type B)
on the MAX3420E EV kit-2 board.
3) Verify that the red USB power LED (D5) lights up.
4) Verify that the green port 0 LED (D1) blinks.
5) A Found New Hardware | Demo
window appears
after plugging in the USB cable for the first time
(Figure 1). Windows 2000 or higher is required.
6) Next, a Found New Hardware | USB Human
Interface Device appears, as shown in Figure 2.
The standard Windows USB HID driver is installed
automatically.
7) Open WordPad by clicking on the WordPad icon
located at Start | Programs | Accessories |
WordPad. Caution: Make sure that WordPad or a
similar editor (e.g., Notepad) is the active window
before performing the next step (the demonstration
program types text into whatever window is open).
8) Press the port 3 pushbutton switch (SW4) to start
the HID keyboard emulator.
9) Verify that the HID keyboard emulator automatically
writes text into the active WordPad editor.
10) Stop the HID keyboard emulator by pressing the
port 3 pushbutton switch (SW4) again. The port 3
pushbutton starts and stops the emulator.
Windows is a registered trademark of Microsoft Corp.
Figure 1. Found New Hardware | Demo Window