Murata Electronics North America DNT900 用户手册
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DNT900 - 11/05/08
Sleep is also affected by the following registers associated with I/O reporting: IO_ReportTrigger,
IO_ReportInterval, ADC_SampleIntvl,
IO_ReportInterval, ADC_SampleIntvl,
and GPIO_Edge Trigger. The following table indicates how the
status and control pins function on sleeping remotes:
Pin
Awake
Sleep
RTS
Normal operation
Hi-Z
CTS
Normal operation
0 V
DCD
Normal operation
0 V
ACTIVITY
3 V
0 V
EXT_SYNC
Not supported
Not supported
DIVERSITY
Normal operation
0 V
TXD
Normal operation
Hi-Z
RXD
Normal operation
0 V
Table 2.10.1
Note that the Activity pin may be used by a local host to detect when a sleeping remote is awake. The
behavior of the GPIOs during sleep is governed by the GPIO_ SleepMode, GPIO_SleepDir, and
GPIO_SleepState
behavior of the GPIOs during sleep is governed by the GPIO_ SleepMode, GPIO_SleepDir, and
GPIO_SleepState
configuration registers. Refer to the register definitions in Section 4.2.
2.11 Encryption
The DNT900 supports optional 128-bit AES encryption of data and configuration packets. Encryption is
enabled by setting the EncryptionKey register to a value other than all zeros (all zeros is a flag that en-
cryption is disabled). A remote without encryption enabled cannot link to an encrypted base, and an
encrypted remote will not attempt to link to an unencrypted base. If a remote's encryption key does not
match that of the base, it can link but not exchange data. The EncryptionKey register can be set over-the
air so it can be changed periodically if desired.
enabled by setting the EncryptionKey register to a value other than all zeros (all zeros is a flag that en-
cryption is disabled). A remote without encryption enabled cannot link to an encrypted base, and an
encrypted remote will not attempt to link to an unencrypted base. If a remote's encryption key does not
match that of the base, it can link but not exchange data. The EncryptionKey register can be set over-the
air so it can be changed periodically if desired.