CY3240-I2USB I2C-USB Bridge Guide, Doc. # 001-66660 Rev.**
15
3.
Kit Operation
3.1
Introduction
The device meets the requirements of I2C Specification for standard and fast speed I
2
C devices,
and supports USB HID devices. The bridge is powered by the USB and consumes less than
500 mA. The device can be configured for several I
2
C clock rates such as 50 kHz, 100 kHz, and
400 kHz.
The number of devices that can be connected is constrained only by the I
2
C address limit and phys-
ical ability of the I
2
C bus. For more details, see the
I2C Specifications
.
The USB communication function uses two 64-byte packets: one for input data flow and the other for
output data flow. The maximum bandwidth of this configuration is 64 bytes. This is sufficient for most
I2C-USB bridge applications (
Figure 3-1
).
Figure 3-1. I2C-USB Bridge
[+] Feedback
electronic components distributor
