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4.2.1
PSoC CY8C24849 Chipset
The PSoC CY8C24894 on CY3240-I2USB Bridge board is pre-programmed to function as full fea-
tured, full speed (12 Mbps) USB. This device enables creating customized peripheral (I/O) configu-
rations that match the requirements of each individual application.
The PSoC device also performs the following functions:
Lights up LED (green) on connecting the bridge to host via USB.
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Lights up LED (red) on external power supply to target device.
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■
Acts as interface between the host and target device.
Figure 4-4. PSoC CY8C24894 Hardware Schematic
4.2.2
USB Mini B Connector
USB Mini B connector communicates between the PC and bridge. It is used to power up the bridge
and supply voltage range of 3.3 V or 5 V to target board. These plugs are always oriented down-
stream towards the USB device. It has SN65220, a single transient voltage suppressor, to provide
electrical noise transient protection to USB port.
CY3240-I2USB I2C-USB Bridge Guide, Doc. # 001-66660 Rev.**
Hardware
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