USB Bridge Solutions
DESCRIPTION
Silicon Labs’ new CP21xx USB bridge ICs eliminate software complexity and
driver compatibility issues, providing a cost-effective, small-footprint turnkey
solution for adding USB and human interface device (HID)-USB connectivity to
applications such as personal medical devices, cellular and cordless phones,
smart card and flash card readers, personal digital assistants, MP3 players,
bar code readers, wireless modems and industrial control systems.
With the rapid proliferation of USB and HID-USB in the embedded world,
developers are looking for painless, economical ways to embed USB connectivity
in their designs. A leading supplier of USB connectivity solutions, Silicon
Labs developed the CP21xx bridge family so that designers can add USB to
microcontroller-based applications without the cost and complexity of developing
sophisticated USB software. The CP21xx ICs require no USB expertise to deploy,
enabling developers to focus time and resources on end applications.
www.silabs.com/usb
INTERFACE SOLUTIONS
USB-TO-UART BRIDGE BLOCK DIAGRAM
Voltage
Regulator
USB
Transceiver
48 MHz
Oscillator
TX
Buffer
RX
Buffer
EEPROM
or EPROM
USB
Function
Controller
UART
UART
I/F
D– (Modem)
D+
VBUS I/O
Control
(Some Devices)
UART
(CP2105 Only) Download the white paper
“USB Simplified”:
www.silabs.com/usb
www.silabs.com/usb
CP21xx FEATURES
• USB 2.0 Compliant, full-speed (12 Mbps)
• No external crystal required
• Up to 1024 Bytes of EEPROM or EPROM
• User programmable custom Baud rates
• Supports all modem interface signals
• Baud rates up to 2 Mbps
• Industrial temperature range -40 to 85 °C
• SMBus master device (CP2112)
• HID class support, no driver installation
needed (CP2112)
APPLICATIONS
• USB to RS-232 converters
• USB to Dual RS-232 converters
• USB to RS-422/RS-285 converters
• Upgrade of legacy RS-232 devices
• PDA USB interface cable
• Cellular phone USB interface cable
• Barcode readers in Point-of-Sale terminals
• Portable medical equipment
• PC peripherals
• Barcode readers in Point-of-Sale terminals
• Industrial connectivity (CP2112)
EASY USB TO UART BRIDGE COMMUNICATION