Specifications

Product Technical Specification & Customer Design Guidelines
80 Proprietary and Confidential - Specifications subject to change 2400058
6.1.1 Power state transitions
The module monitors supply voltage and operating temperature and notifies the
host when critical threshold limits are exceeded. (See Table 6- 6 for details.)
Power state transitions may occur:
• Automatically, when critical supply voltage or module temperature trigger
levels are encountered. See Figure 6-1 for details.
• Under host control, using available AT or CnS commands in response to user
choices (for example, opting to switch to airplane mode) or operating condi-
tions.
Off
• Host power is connected
• Module is powered down (drawing minimal current from
host power supply)
   
Disconnected
• Host power is disconnected from module
• All module-related voltages are at 0 V.
   
Table 6-5: Supported SL808X power states (Continued)
State Description
Host
powered
Modem
powered
USB
interface
active
RF
enabled
Table 6-6: Power state transitions (including voltage/temperature trigger levels)
Transition
Voltage [TBD] Temperature [TBD]
Notes
Trigger V Trigger °C
Normal to Low Power
VOLT_HI_CRIT 4.3 TEMP_LO_CRIT -25 • RF suspended
• CNS_RADIO_POWER notification
issued
a
VOLT_LO_CRIT 3.3 TEMP_HI_CRIT 108
Low Power to Normal VOLT_HI_NORM 3.9 TEMP_NORM_LO -15
• RF resumed
• CNS_RADIO_POWER notification
issued
a
Low Power to Normal
or
Remain in Normal
(remove warnings)
VOLT_LO_NORM 3.4 TEMP_HI_NORM 85
Normal (issue warning) VOLT_LO_WARN 3.35 TEMP_HI_WARN 95 •
Power off/on
(host-initiated)
- - - -
• Power off recommended when
supply voltage or module
operating temperature is critically
low or high.
• See Procedure: Power on/off on
page 66.
a. Notification issued only if previously enabled. See [4] AirPrime UMTS MiniCard CnS Reference for details.