SEW290 WCDMA Module
21
Figure 4-8 LED citcuit reference design diagram
4.9
Sleep and Wake_up
4.9.1
Sleep
When SEW290 module is used in the MID, the MID and module can set module to sleep mode by the USB
protocol such as hang up the USB,the module will enter into deep sleep mode, and the sleep current consumption
is about 3mA.
4.9.2
WAKEUP_OUT
The 24th pin of SEW290 module is WAKEUP_OUT, the default high level of this pin is 1.8V.
When there is an incoming call, according to the call ring reporting period ( the period is 6000ms),module will
divide this period apart to 5900ms and 100ms two periods. The WAKEUP_OUT pin will output a 5900ms low
level and a 100ms high level, along with ring period the level falling edge is reported.
After users answer a call, the WAKEUP_OUT pin will output a high level; If the call is not answered, and after the
call is hanged up, WAKEUP_OUT will output a high level to wake up the MID next time.
About the SMS/MMS, before the module receives a messages and reports to CMTI, the WAKEUP_OUT pin will
output a 2000ms low level, then output a high level.
Note: This wake up function is mainly used in MID and PAD these tablet pcs. in other end devices embedded
SEW290 module
，
this function may not work cause the software needs update.
5
Mechanical Design
5.1
Appearance
See SEW290 module’s appearance in figure 5-1.
Figure 5-1 SEW290 module’s appearance
