User's Manual
Table Of Contents
- Contents
- Table Index
- Figure Index
- 0. Revision history
- 1. Introduction
- 2. Product concept
- 3. Application interface
- 3.1. Pin
- 3.2. Operating modes
- 3.3. Power supply
- 3.4. Power on and down scenarios
- 3.5. Power saving
- 3.6. Summary of state transitions
- 3.7. RTC backup
- 3.8. Serial interfaces
- 3.9. Audio interfaces
- 3.10. SIM card interface
- 3.12. Behaviors of the RI
- 3.13. Network status indication
- 3.14. Operating status indication
- 4. Antenna interface
- 5. Electrical, reliability and radio characteristics
- 6. Mechanical dimensions
- 7. Storage and Manufacturing
- Appendix A: GPRS coding schemes
- Appendix B: GPRS multi-slot classes
M95 Hardware Design
M95_HD_V1.0 - 43 -
Host(DTE)
Controller
Module(DCE)
RTS
CTS
RTS
GND
GND
RXD
TXD
UART Port
CTS
RXD
TXD
Figure 20: Connection of UART port associated hardware flow control
3.8.1.3. Software upgrade
The TXD, RXD can be used to upgrade software. The PWRKEY pin must be pulled down before
the software upgrades. Please refer to the following figures for software upgrade.
IO Connector
TXD
RXD
GND
PWRKEY
Module
(
DCE
)
UART Port
TXD
RXD
GND
PWRKEY
Figure 21: Connection of software upgrade