28
CY3240-I2USB I2C-USB Bridge Guide, Doc. # 001-66660 Rev.**
Hardware
Figure 4-7. GPIO Pin Schematic
4.2.5
I2C Slave Interface Connector
The I2C slave interface connector is used to communicate data between the target device and
bridge board. It consists of two devices, MAX3378 and SN721.
MAX3378
■
Is used to convert the voltage level between the target device (Vcc) and host level voltage (V
L
)
■
Has bidirectional level translation, accepts V
L
+1.2 V (Min) to +5.5 V (Max); V
out
(High) is 0.6
times V
L
(if source current is 0.02 mA) and V
out
(Low) is 0.4 V
SN721
■
An array of SCR/diode bipolar structure for ESD and over-voltage protection
[+] Feedback
electronic components distributor
