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MAX3420E Evaluation Kit-2
Figure 2. Found New Hardware | USB Human Interface Device Window
Detailed Description of Hardware
Tables 1 and 2 describe the function of each pushbutton
and LED during the HID keyboard emulator demo.
Tables 3 through 6 explain the functionality of each
jumper on the MAX3420E EV kit-2.
Tables 7 through 9 give the pin descriptions for headers
H1, H2, and H3. H2 is a header consisting of SPI test
points. H3 is a header designed to be connected to
one of two Atmel tools. The JTAGICE-2 can connect to
this header to load and debug ATtiny2313 code using
the AVR Studio? software, available on the Atmel web-
site. Additionally, an AVRISP-2 can be connected to
program any hex file into the ATtiny2313. Refer to the
Atmel documentation for further details.
The example firmware code for the HID keyboard emula-
tor may be downloaded at www.maxim-ic.com/evkitsoft-
ware. Double click the MAX3420E EVKIT Firmware link.
Table 1. Pushbutton Descriptions for HID Keyboard Emulator Demo
PORT
0
1
2
3
PUSHBUTTON
SW1
SW2
SW3
SW4
DESCRIPTION
Not used
Not used
Not used
Starts and stops sending characters as keyboard
Table 2. LED Descriptions for HID Keyboard Emulator Demo
PORT
0
1
2
3
LED
D1
D2
D3
D4
DESCRIPTION
Blinks to show program is running
MAX3420E detected a USB bus reset
SUSPEND (PC stopped USB activity)
SEND light (toggles when the pushbutton on GPO port 3 (SW4) is pressed)
AVR Studio is a registered trademark of Atmel Corp.
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