Product Info
Table Of Contents
- Contents
- Tables
- Figures
- 1 Introduction
- 2 Interface Characteristics
- 2.1 Application Interface
- 2.2 RF Antenna Interface
- 2.3 GNSS Interface
- 2.4 Sample Application
- 3 Operating Characteristics
- 3.1 Operating Modes
- 3.2 Power Up/Power Down Scenarios
- 3.3 Power Saving
- 3.4 Power Supply
- 3.5 Operating Temperatures
- 3.6 Electrostatic Discharge
- 3.7 Blocking against RF on Interface Lines
- 3.8 Reliability Characteristics
- 4 Mechanical Dimensions, Mounting and Packaging
- 5 Regulatory and Type Approval Information
- 6 Document Information
- 7 Appendix
Cinterion
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TX62-W(-B/-C)/TX82-W Hardware Interface Description
3.3 Power Saving
109
t TX62-W_TX62-W-x_TX82-W_HID_v01.000 2021-05-19
Confidential / Preliminary
Page 80 of 154
3.3.1.1 SLEEP Mode
SLEEP mode is a module’s low power mode when no call is in progress and there is no active
communication on any serial interface (ASC0, ASC1). During SLEEP mode, the serial interfac-
es are shut down except for RTS0 that may be used to wake up TX62/TX82 from SLEEP mode
(see below). The module is in a low power consumption state depending on paging cycles
based on network defined DRX values, and possibly network negotiated eDRX (extended
DRX) as well as 3GPP PSM values - if configured.
The firmware is active to a minimum extent, and preserves the state it was in before entering
the SLEEP mode. The module stays registered to the network.
For details on the network based DRX values see Section 3.3.2.1 (GSM/(E)GPRS) and Section
3.3.3.1 (LTE M1 NB1/2). For details on the network negotiated eDRX values see Section
3.3.3.2, for network negotiated 3GPP PSM values see Section 3.3.3.3.
The SLEEP mode option an be enabled/disabled by AT command (see [1]: AT^SCFG param-
eter “MEopMode/PwrSave”).
RTS0 can be used to wake up TX62/TX82 from SLEEP mode between paging cycles. Asser-
tion of RTS0 (i.e., toggle from inactive high to active low) serves as wake up event, thus allow-
ing an external application to almost immediately terminate power saving. After RTS0
assertion, the CTS0 line signals module wake up, i.e., readiness of the AT command interface.
It is therefore recommended to enable RTS/CTS flow control (default setting). Figure 39 shows
the described RTS0 wake up mechanism.
Figure 39: Wake-up via RTS0
RTS0
CTS0
TXD0
RXD0
AT command
Reply URC
RTS assertion (falling edge)
Wake up from SLEEP mode
Return to SLEEP mode
RTS back