450-0053 Datasheet, PDF (20/42 Pages) List of Unclassifed Manufacturers – Integrated Transceiver Modules for WLAN 802.11 a/b/g/n, Bluetooth, Bluetooth Low Energy (BLE), and ANT

TiWi5 TRANSCEIVER MODULE
DATASHEET
BLUETOOTH POWER-UP SEQUENCE
The following sequence describes device power up from shutdown. Only the Bluetooth core is enabled;
the WLAN core is disabled.
Notes:
1. (A) After this sequence is completed, the device is in the low VIO-leakage state while in shutdown
2. The DC2DC(1.8V) signal can be monitored on BT_FUNC2 Module Pin (#41)
3. DC_REQ, CLK_REQ, and FREF are internal signals shown for reference only
Figure 5 Bluetooth Power-up Sequence
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.
The information in this document is subject to change without notice.
330-0042-R2.0
Copyright © 2011-2012 LS Research, LLC
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