The data packet from the chip is organized as follows: Byte 0: bit 0 is the left button status, bit 1 is the right button status, and bit 2 is the middle button status. Byte 1 reports the X direction, with values ranging from -127 to +127 counts; byte 2 reports the Y direction, with values ranging from -127 to +127 counts. The module will respond to a suspend command from the host by entering the ‘sleep mode’ until awakened by the host. While in suspend mode, the chip will go into a low current draw mode. The USB VersaPad® is bus powered; therefore, it operates at 5 V. Under normal operation, the device draws approximately 15 mA. During suspend mode the chip enters a low current mode. In this mode the chip will draw no more than 25 nA.