User's Manual

Table Of Contents
Installation_________________________________________________ Boomer II User Manual & Integrator’s Guide
Copyright Wavenet Technology © November 2003 48 BM210012WT37
Power-Up Timing Diagram
Note: HCRESET, CTS, DSR, DCD, the LEDs and the internal modem reset are all
active low signals.
Power Up Diagram Callouts
1 Power is supplied to the modem
2 The HOSTPWR_ON signal is asserted to turn on the modem.
3 The HCRESET signal is de-asserted.
4 The internal modem reset is released to allow the modem boot up
sequence.
5 The modem exits the boot load state, is operational and is ready to
communicate with the DTE.
Modem Internal Power
Modem Internal Reset
CTS
DSR
DCD
LED’s
~ 300 ms
Initialisation
4
5
Boot Stage
Modem is now
software controlled
Modem is now
O
p
erational
Network Connect
IN RANGE
Optional Delay
1
HOST 3.8V
HOSTPWR_ON
2
HCRESET (Optional)
140 ~ 280 ms
Reset Delay
3
Optional
Delay