Sony Ericsson GR47 Integrator's Manual page 29

All manuals and user guides at all-guides.com
Turning the Radio Device Off
(2) It is a requirement from most GSM network providers that GSM products
LZT 123 7589 R2B
SYSTEM CONNECTOR INTERFACE
Figure 5.3 Off timings and VIO performance
Symbol Parameters
t Time for software
SPD
pulse detection
which initiates a
software shutdown
t Application
PULSE
ON/OFF pulse
width
t Software controlled
SCSD
shutdown
(2)
deactivates VIO
t Time when VCC
OFF
power supply can
be disabled
properly detach from the network during a power-down sequence. In order
to achieve this it is important that the VCC supply is not removed or turned off
before VIO has been deactivated by the module.
Conditions Min. Typ
800 -
100 -
0
)
- 2.5
VIO is 0 -
DISABLED
Max Unit
- ms
- ms
) (3) )
10 s
- ms
29