Operating Modes; C24 Operating Modes - Motorola 8900 - Blackberry Curve Cell Phone OEM Car Charger Developer's Manual

Operating Modes

C24 incorporates several operating modes. Each operating mode is different in the active features
and interfaces.
Table 2-1
general guidelines for operation.
Mode
Not Powered
RTC Mode
Idle Mode
Sleep Mode
CSD call or
GPRS data
December 15, 2008
summarizes the general characteristics of the C24 operating modes and provides
Table 2-1: C24 Operating Modes
Description
VCC supply is disconnected.
Valid VCC supply.
RESET_N signal is enabled (low).
RESET_N signal is disabled (high).
CTS_N and DSR_N signals are enabled
(low).
RESET_N signal is high.
CTS_N signal is disabled.
RESET_N signal is high.
TXEN_N signal is Enabled (Low).
C24 Module Hardware Description
Chapter 2: Hardware Interface Description
Features
The C24 is Off.
Any signals connected to the interface con-
nector must be set low or tri-state.
The C24 Interfaces are Off. Only the internal
RTC timer is operating. Any signals
connected to the interface connector must be
set low or tri-stated.
The C24 is fully active, registered to the net-
work and ready to communicate.
This is the default power-up mode.
The C24 is in low power mode.
The application interfaces are disabled, but,
C24 continues to monitor the network.
A voice or data call is in progress.When the
call terminates, C24 returns to the last operat-
ing state (Idle or Sleep).
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