Specifications

XT65/XT75 Hardware Interface Description
3.6 Power Saving
s
XT65_XT75_HD_v01.001 Page 49 of 133 2007-1-8
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3.6.3 Timing of the RTS0 Signal in CYCLIC SLEEP Mode 9
In SLEEP mode 9 the falling edge of RTS0 can be used to temporarily wake up the ME. In this case the activity
time is at least the time set with AT^SCFG="PowerSaver/Mode9/ Timeout",<psm9to> (default 2 seconds). RTS0
has to be asserted for at least a dedicated debounce time in order to wake up the ME. The debounce time spec-
ifies the minimum time period an RTS0 signal has to remain asserted for the signal to be recognized as wake up
signal and being processed. The debounce time is defined as 8*4.615 ms (TDMA frame duration) and is used to
prevent bouncing or other fluctuations from being recognized as signals. Toggling RTS0 while the ME is awake
has no effect on the AT interface state, the regular hardware flow control via CTS/RTS is unaffected by this RTS0
behaviour.
Figure 12: Timing of RTS0 signal (if CFUN = 9)