Chapter 2: Hardware Interface Description
December 15, 2008
C24 Module Hardware Description
9
Operating Modes
C24 incorporates several operating modes. Each operating mode is different in the active features
and interfaces.
Table 2-1
summarizes the general characteristics of the C24 operating modes and provides
general guidelines for operation.
Table 2-1: C24 Operating Modes
Mode
Description
Features
Not Powered
VCC supply is disconnected.
The C24 is Off.
Any signals connected to the interface con-
nector must be set low or tri-state.
RTC Mode
Valid VCC supply.
RESET_N signal is enabled (low).
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.
Idle Mode
RESET_N signal is disabled (high).
CTS_N and DSR_N signals are enabled
(low).
The C24 is fully active, registered to the net-
work and ready to communicate.
This is the default power-up mode.
Sleep Mode
RESET_N signal is high.
CTS_N signal is disabled.
The C24 is in low power mode.
The application interfaces are disabled, but,
C24 continues to monitor the network.
CSD call or
GPRS data
RESET_N signal is high.
TXEN_N signal is Enabled (Low).
A voice or data call is in progress.When the
call terminates, C24 returns to the last operat-
ing state (Idle or Sleep).
Summary of Contents for 8900 - Blackberry Curve Cell Phone OEM Car Charger
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Page 24: ...Revision History xx C24 Module Hardware Description December 15 2008 ...
Page 30: ...Regulatory Approvals 6 C24 Module Hardware Description December 15 2008 ...
Page 70: ...Antenna Interface 46 C24 Module Hardware Description December 15 2008 ...
Page 78: ...Application Interface Specifications 54 C24 Module Hardware Description December 15 2008 ...
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