Cinterion
®
EHS6 AT Command Set
2.13 AT^SPOW
EHS6_ATC_V03.001
15/12/3
Confidential / Released
Page 80 of 513
2.13
AT^SPOW Set UART Mode and SLEEP Mode on UART
enables or disables the ME's UART interfaces ASC0 and ASC1 and controls SLEEP mode on both
interfaces. Parameter settings are non-volatile and common for all interfaces, but are not effective for USB.
If SLEEP mode is enabled (
=2), CTS0 and CTS1 are periodically activated for the time set with
enabling the ME to listen to paging messages from the base station. The AT interface is enabled during the active
periods of CTS0/CTS1.
The inactive periods of CTS0/CTS1 (when power saving is effective) depend on the paging cycle of the base
station and may vary between 0.47 - 2.12 seconds in GSM networks and 0.64 - 5.12 seconds in UMTS networks.
This means that the TE should provide an equivalent timeout for trying to access the AT command interface.
SLEEP mode requires that CTS/RTS flow control be configured both on ME side (see
) and TE side.
If SLEEP mode is enabled on ASC0 and ASC1, keep in mind that the module's current consumption decreases
only if USB is either disconnected at all, or in Suspend state with VUSB_IN line enabled.
Please refer to
"EHS6 Hardware Interface Description, Version 03.001"
for more information on power saving.
Syntax
Parameter Description
0
UART interfaces ASC0 and ASC1 are deactivated to reduce power consump-
tion. They can be activated again by changing
from one of the USB
AT command instances.
1
UART interfaces ASC0 and ASC1 are activated.
2
(D)
UART interfaces ASC0 and ASC1 are in a power saving mode, i.e., in SLEEP
mode.
Test Command
AT^SPOW=?
Response(s)
^SPOW:
(list of supported
s), (time range of
), (time range of
)
OK
ERROR
+CME ERROR:
Read Command
AT^SPOW?
Response(s)
^SPOW:
,
OK
ERROR
+CME ERROR:
Write Command
AT^SPOW=
,
Response(s)
OK
ERROR
+CME ERROR:
PIN
Last
-
+
-
<mode>
(num)(NV)