EZ-811HS Development Kit Manual Page 9
1. Insert the SL811HST demo board onto the ezusb dev kit.
2. On the ezusb dev kit, turn ON bit 4 of S6.
3. On the SL811HST Demo Board, set JP1 to Slave Mode (set jumpers 9-10 and 11-12), JP2 to
Full Speed (jumper 2-3), and JP3 to 5V Dev Kit.
JP2 = Full Speed means the left-most jumpers are connected, since pin 1 is on the right.
4. (Optionally) Add 3 tact switches on Port C - Bit 0 to Bit 2.
To connect switches: pull up P5-9 to 3.3v with a 100K resistor, and connect P5-9 with an
SPST switch to ground.
Repeat this set-up using P5-10 and then again using P5-11.
You will need three 100K resistors and three SPST switches.
On the EZ-811, P5-9 is Bit 2, P5-10 is Bit 1, P5-11 is Bit 0.
Refer to the schematic for the EZ-USB Development Kit Board.
Mute, Vol Up, Vol Down respectively. All buttons are active low.
5. You may omit Step 4 if you are interested in viewing enumeration only.
6. Now, insert the USB cable to connect the EZUSB board.
Use the EZ-USB Control Panel to download ez811\bin\HIDSlave.hex.
7. When that is done, you should see host LED off and Active LED off.
8. Using another USB cable and USB port on your PC, connect J2 (USB connector) to the PC
(D4 on the EZ-811 Board will turn on).
a. If necessary, select “C:\windows\inf” as the location containing the driver file.
9. If successful, in the "Device Manager" you should see two new entries:
a. HID-Compliant consumer control device.
b. USB Human Interface Device.
10. Try the 3 buttons to control the Mute, Volume Up/Down of your sound card.
5.0 Conclusion
With the EZ-811HS development kit, you will be able to setup a system to develop embedded host
products using SL811HST. The hardware and firmware provide a good starting point in under-
standing the basic connection setup using 8051 as the controller to communicate with SL811HST.
Code is provided that can be used to initialize the SL811HST as a host controller and perform var-
ious USB data and control transaction with external slave USB devices.
