Specifications

Rev 1 Dec.10 Proprietary and Confidential - Specifications subject to change 71
5.5 Disable signal (W_DISABLE_N)
This signal is used by the host to disable (or enable) the AirPrime SL808X
Embedded Module’s RF connection.
5.5.1 Pin descriptions
Tabl e 5- 1 1 describes the wireless disable signal pin.
See Digital I/O electrical information on page 39 for 1V8 voltage characteristics
and reset state definitions.
5.5.2 Electrical characteristics
Refer to Ta bl e 4 - 2 on page 34 for basic characteristics (type, voltage).
5.5.3 Application notes
Caution: This section is under review and subject to change.
5.5.3.1 Procedure: Disable/enable radio
To disable the RF connection:
1. Host asserts W_DISABLE_N.
To enable the RF connection (when in RF-disabled mode):
1. Host de-asserts W_DISABLE_N.
Table 5-10: Wireless Disable signal features
Feature Details
Purpose Wireless disable
• Used by host to disable or enable low power mode (‘airplane
mode’).
Implementation • Low = Put module in airplane mode
• Digital input. Active low, 1.8 V logic.
• Host to provide a pull-up resistor of 50-100 k.
Table 5-11: Wireless disable signal pin description
Pin Signal I/O I/O type Description
62 W_DISABLE_N I Digital Wireless disable