CP2102-GMR Silicon Laboratories Inc, CP2102-GMR Datasheet - Page 13

• Manufacturer Part Number: CP2102-GMR
• Description: USB to UART Bridge 28-Pin QFN T/R
• Manufacturer: Silicon Laboratories Inc

Specifications of CP2102-GMR

• Package: 28QFN
• Operating Temperature: -40 to 85 °C
• Applications: USB
• Interface: UART
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Mounting Type: Surface Mount
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.6 V
• Supply Current (max): 100 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1161 - KIT EVALUATION FOR CP2102
• Lead Free Status / Rohs Status: Details
• Other names: 336-1802-2; CP2102-GMR; Q4435029

7. CP2102 Device Drivers
There are two sets of device drivers available for the CP2102 devices: the Virtual COM Port (VCP) drivers and the
USBXpress Direct Access drivers. Only one set of drivers is necessary to interface with the device.
The latest drivers are available at http://www.silabs.com/products/microcontroller/downloads.asp.
7.1. Virtual COM Port Drivers
The CP2102 Virtual COM Port (VCP) device drivers allow a CP2102-based device to appear to the PC's
application software as a COM port. Application software running on the PC accesses the CP2102-based device
as it would access a standard hardware COM port. However, actual data transfer between the PC and the CP2102
device is performed over the USB interface. Therefore, existing COM port applications may be used to transfer
data via the USB to the CP2102-based device without modifying the application. See Application Note “AN197:
Serial Communications Guide for the CP210x” for Example Code for Interfacing to a CP2102 using the Virtual
COM drivers.
7.2. USBXpress Drivers
The Silicon Laboratories USBXpress drivers provide an alternate solution for interfacing with CP2102 devices. No
Serial Port protocol expertise is required. Instead, a simple, high-level application program interface (API) is used
to provide simpler CP201x connectivity and functionality. The USBXpress for CP210x Development Kit includes
Windows device drivers, Windows device driver installer and uninstallers, and a host interface function library (host
API) provided in the form of a Windows Dynamic Link Library (DLL). The USBXpress driver set is recommended
for new products that also include new PC software. The USBXpress interface is described in Application Note
“AN169: USBXpress Programmer's Guide.”
7.3. Driver Customization
In addition to customizing the device as described in Section 7, the drivers and the drivers installation package can
be also be customized. See Application Note “AN220: USB Driver Customization” for more information on
generating customized VCP and USBXpress drivers.
7.4. Driver Certification
The default drivers that are shipped with the CP2102 are Microsoft WHQL (Windows Hardware Quality Labs)
certified. The certification means that the drivers have been tested by Microsoft and their latest operating systems
(XP and Vista) will allow the drivers to be installed without any warnings or errors.
The customized drivers that are generated using the AN220 software are not automatically certified. They must go
first through the Microsoft Driver Reseller Submission process. Contact Silicon Laboratories support for assistance
with this process.
Vendor ID
Product ID
Power Descriptor (Attributes) 80h
Power Descriptor
(Max. Power)
Release Number
Serial Number
Product Description String
Name
Table 9. Default USB Configuration Data
10C4h
EA60h
32h
0100h
0001 (63 characters maximum)
“CP2102 USB to UART Bridge Controller” (126 characters maximum)
Rev. 1.4
Value
CP2102
13