User's Manual
Table Of Contents
- Document History
- Introduction
- Product Concept
- Application Interface
- Operating Modes
- Power Supply
- Power Up / Power Down Scenarios
- Automatic GPRS Multislot Class Change
- Charging Control
- Summary of State Transitions (Except SLEEP Mode)
- RTC Backup
- SIM Interface
- Serial Interface ASC0
- Serial Interface ASC1
- USB Interface
- I2C Interface
- Audio Interfaces
- Control Signals
- Antenna Interface
- Electrical, Reliability and Radio Characteristics
- Mechanics
- Sample Application
- Reference Approval
- Appendix
TC63 Hardware Interface Description
Strictly confidential / Draft
s
TC63_HD_V00.432 Page 47 of 97 11.05.2005
3.11 USB Interface
TC63 supports a USB 2.0 Full Speed (12Mbit/s) device interface. It is primarily intended for
use as command and data interface and for downloading firmware.
The USB I/O-pins are capable of driving the signal at min 3.0V. They are 5V I/O compliant.
To properly connect the module’s USB interface to the host a USB 2.0 compatible connector
is required. Furthermore, the USB modem driver delivered with TC63 must be installed as
described below.
The USB host is responsible for supplying, across the VUSB_IN line, power to the module’s
USB interface, but not to other TC63 interfaces. This is because TC63 is designed as a self-
powered device compliant with the “Universal Serial Bus Specification Revision 2.0”
1
.
MCU
USB
Transceiver
lin.
Regulator
PSU
Baseband controller
GSM module
Host
22Ohms
22Ohms
1.5kOhms
USB_DP
USB_DN
VUSB_IN
5V3V
D+
D-
VBUS
GND
80 pole board-to-board connector
Figure 14: USB circuit
1
The specification is ready for download on http://www.usb.org/developers/docs/