450-0009 LS Research, 450-0009 Datasheet - Page 17

• Manufacturer Part Number: 450-0009
• Description: WiFi / 802.11 Modules & Development Tools TiWi-R1 Module with U.FL Connector
• Manufacturer: LS Research

Specifications of 450-0009

• Wireless Frequency: 2.4 GHz
• Modulation: GFSK
• Security: 62 bit, 128 bit, 256 bit WEP
• Operating Voltage: 3.3 V
• Antenna: External (Not Included)
• For Use With/related Products: LM3S1918
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

BLUETOOTH POWER-UP SEQUENCE
The information in this document is subject to change without notice.
Confirm the data is current by downloading the latest revision from www.lsr.com.
330-0041-Rev2.4
The following sequence describes device power up from shutdown. Only the BT core is enabled; the
WLAN core is disabled.
Power up requirements:
1. No signals are allowed on the IO pins if no IO power supplied, because the IOs are not 'failsafe'.
Exceptions are CLK_REQ_OUT, SLOWCLK, XTALP and AUD_xxx, which are failsafe and can tolerate
external voltages with no VDDS and DC2DC.
2. VDDS and SLOWCLK must be stable before releasing BT_EN.
3. Fast clock must be stable maximum 55 ms after BT_EN goes HIGH.
Copyright © 2010 LS Research, LLC
Figure 4-3. BT Power-up Sequence
TiWi-R1 TRANSCEIVER MODULE
DATASHEET
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