Technical Specifications; Modes Of Operation; No Supply; Power Off - Nokia RH-53 Manual

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Technical Specifications

■

Modes of Operation

RH-53/54 baseband engine has six different 'normal' operating modes:
• Νo supply

• Power off

• Αcting dead
• Active
• Sleep
• Charging

No supply

In this mode the phone has no supply voltage.
The phone enters this mode if the battery is disconnected, or the battery voltage drops below
V (1.8V~2.0V)
MSTR-
The phone exits 'No supply' mode, into hardware 'Reset' mode (not described here), after a
20ms delay, if the battery voltage rises above V
placing the battery with a new battery (V
the battery above V
MSTR+
The phone exits 'Reset' mode into 'Active'/Acting dead' mode when the battery voltage rises
above V (3.0~3.2V) within the watchdog time period, and subsequently stays above
COFF+
V (2.7~2.9V) for a minimum of 240.5ms. If the battery voltage has not risen beyond
COFF-
V before the internal watchdog elapses the phone is forced into 'Power off' mode instead.
COFF+
Power off
In this mode the phone is powered off, but has a supply voltage.
The phone enters 'Power off' mode from all other modes, except 'No supply', if internal watch-
dog elapses. VRTC regulator is active (enabled), and supplied from the main battery (the RTC
status depends on whether RTC was enabled or not when entering 'Power off' mode).
The phone exits 'Power off' mode, into hardware 'Reset' mode (not described here), after a
20ms delay, if either of the following conditions are met:
• Power on button detected (PwrOffX).
• Charger connection detected (VCharDet)(VCharIn>VCH
• RTC alarm detected (RTC_ALARM).
The phone exits 'Reset' mode into 'Active'/Acting dead' mode when the battery voltage rises
above V , and stays above V
COFF+
12
V
BAT> MSTR+
.
for a minimum of 240.5ms.
COFF-
COMPANY CONFIDENTIAL
Copyright © 2004 Nokia. All Rights Reserved.
(2.0~2.2V). This will occur either by re-
MSTR+
), or by connecting a charger and charging
RH-53/54
8-System Module
(1.9~2.1V)).
DET+
ISSUE 1 09/2004