Modes; Sed (Smart Error Detection) - Sierra Wireless MC5725 Hardware Integration Manual

CDMA and GSM / UMTS Mini Card Hardware Integration Guide
Table 2-8: Miscellaneous DC power consumption (MC8780 / MC8781 / MC8785V /
MC8790 / MC8790V / MC8791V / MC8792V)
Signal Description
VCC Module OFF
leakage current
USB transmit
current
34
In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence.
Band Typ
All bands 400
All bands 10

Modes

Transmit and Receive modes
Current consumption in transmit or receive mode (in a call or
data connection) is affected by several factors, such as:
• Radio band being used
• Transmit power
Receive gain settings
•
Data rate
•
Number of active Transmit time slots (for transmit mode)
•
Sleep mode
Sleep mode is the normal state of the module between calls or
data connections. In this reduced power mode, the module
cycles between wake (polling the network) and sleep, at an
interval determined by the network provider.
Deep sleep
Deep sleep mode is a reduced power, out‐of‐network‐coverage
mode, that the module enters when it cannot acquire network
service after several minutes.
The module then exits deep sleep periodically to try to acquire
service, and if successful, attempts to register.
Shutdown mode
While in shutdown mode, the module is powered off, but still
draws a minimal current from the host power supply.

SED (Smart Error Detection)

(MC87xx only)
The MC87xx modem uses a form of SED to track recurrent
premature modem resets. In such cases, the modem automati‐
cally forces a pause in boot‐and‐hold mode at power‐on to
accept an expected firmware download to resolve the problem.
Proprietary and Confidential
Max Units Notes / Configuration
μ
600 A Full operating temperature
range
10 mA Full speed USB connection,
C = 50 pF on D+ and D-
L
signals
2130114