Integra M2106+
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WA_DE_PTS_003-001
April, 2007
The Reset process is activated either by the external ~RST signal or by an internal signal (coming
from a reset generator). This automatic reset mode is activated at Power-up.
The Wireless CPU
®
remains in Reset mode as long as the Reset signal is held low.
•
This signal should be used only for “emergency” resets:
A software reset is always preferred to a hardware reset.
3.5.2
Reset Sequence
To activate the « emergency » reset sequence, the ~RST signal must be set to low for 500
μ
s minimum.
As soon as the reset is completed, the AT interface answers « OK » to the application. For this, the
application must send AT
↵
to get the “OK” response.
If the application manages hardware flow control, the AT commands can be sent during the initialization
phase. Another solution is to use the AT+WIND command to obtain an unsolicited status from the Wireless
CPU
®
.
For further details, refer to the AT commands Interface Guide documentation [7].
RES ET m o d e
I
B B + RF
= 2 0
t o 4 0 m A
EXT ERN A L RESET
ST A TE O F T H E
W ir eles s CPU
®
W ir eles s CPU
®
REA D Y
M in :5 0 0
μ
s
T y p : 2 m s
A T an s w er s “ O K”
W ir eles s CPU
®
REA D Y
S IM an d n et w o rk d ep en d en t
W ir eles s CPU
®
O N
I
B B + RF
< 1 2 0 m A
w it h o u t loc u p d at e
Figure 10: Reset sequence diagram
