Datasheet
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.
Evaluates: MAX3420E
MAX3420E Evaluation Kit-2
_______________________________________________________________________________________ 3
Figure 2. Found New Hardware | USB Human Interface Device Window
AVR Studio is a registered trademark of Atmel Corp.
Table 1. Pushbutton Descriptions for HID Keyboard Emulator Demo
PORT PUSHBUTTON DESCRIPTION
0 SW1 Not used
1 SW2 Not used
2 SW3 Not used
3 SW4 Starts and stops sending characters as keyboard
Table 2. LED Descriptions for HID Keyboard Emulator Demo
PORT LED DESCRIPTION
0 D1 Blinks to show program is running
1 D2 MAX3420E detected a USB bus reset
2 D3 SUSPEND (PC stopped USB activity)
3 D4 SEND light (toggles when the pushbutton on GPO port 3 (SW4) is pressed)