CY4636 WirelessUSB™ LP Keyboard Mouse Reference Design Kit User Guide, Doc. # 001-70355 Rev. *A
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Hardware
4.1.1.3
USB Connector
The USB connector communicates between the PC and the bridge. It also supplies a input voltage of 5 V to
power up the bridge.
Figure 4-5. Schematic View of the USB A Connector
4.1.1.4
Bind Button
This button on the bridge is used to bind the mouse and keyboard with the bridge. When the bind
button on the bridge is pressed, the bridge goes into Bind Mode. In Bind Mode, the bridge uses the
Bind ID to communicate with the mouse/keyboard to bind to the system.
Figure 4-6. Schematic View of the Bind Button
4.1.1.5
LEDs
The CY4636 Bridge board has dual LEDs to indicate different status.
LED2 (Red):
1. When the dongle is first plugged in, the red LED turns ON. It turns OFF when the USB enumera-
tion process completes.
Note:
If the bind button is pushed when the dongle is first plugged in, the firmware enters MTK
test mode and the LED blinks. The LED blinks continuously until the dongle is removed from the
computer.
2. The red LED blinks ON/OFF when the dongle is in Bind Mode. The ON and OFF time is approxi-
mately 320 ms, which is the rate at which the dongle changes channels during the bind process.
3. The red LED also blinks ON/OFF when the PC is suspended. The blinking rate is approximately
1 second which is the frequency of the wake up interrupts.
LED1 (Green):
1. The green LED turns ON when the dongle receives data from mouse or keyboard. It remains on
for 250 ms after the last received data packet.
2. The green LED turns ON and remains on if a key is pressed and held (due to the keyboard's
sending Keep Alive packets).
3. The green LED turns ON and remains on during Ping Mode (in normal operation, Ping Mode is a
very short period and you may not notice this period).