EM260-RTR Ember, EM260-RTR Datasheet - Page 37

• Manufacturer Part Number: EM260-RTR
• Description: IC ZIGBEE SYSTEM-ON-CHIP 40-QFN
• Manufacturer: Ember

Specifications of EM260-RTR

• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4
• Applications: ZigBee™
• Power - Output: -32dBm ~ 3dBm
• Sensitivity: -97dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 30mA
• Current - Transmitting: 34mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-QFN
• For Use With: 636-1009 - PROGRAMMER USB FLASH EM250/260
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Other names: 636-1007-2; EM260-RTR

6.2.2
There are some situations when the EM260 must make a decision but there isn’t enough time to consult with
the Host. The Host can control what decision is made by setting the policy in advance. The EM260 will then
make decisions according to the current policy. The Host is informed via callbacks each time a decision is
made, but by the time the news reaches the Host, it is too late to change that decision. You can change the
policies at any time by using the
A policy is used for trust center behavior, external binding modification requests, datagram replies, generat-
ing
6.2.3
The policy for datagram replies allows the Host to decide whether it wants to supply the EM260 with a reply
payload for every datagram received. If the Host sets the policy to not supply a reply, the EM260 will auto-
matically send an empty reply (containing no payload) for every datagram received. If the Host sets the policy
to supply the reply, then the EM260 will only send a reply when instructed by the Host.
If the reply does not reach the sender before the transport retry timeout expires, the sender will transmit the
datagram again. The Host must process the incoming message and supply the reply quickly enough to avoid
retransmission by the sender. Provided this timing constraint is met, multiple datagrams can be received
before the first reply is supplied and the replies can be supplied in any order.
6.2.4
Asynchronous callbacks from the EM260 are sent to the Host as the response to a
EM260 uses the interrupt line to indicate that the Host should send a
queue multiple callbacks while it waits for the Host, and each response only delivers one callback. If the
EM260 receives the
backs
6.2.5
The EM260 will always idle its processor whenever possible. To further reduce power consumption, the EM260
can be put to sleep by the Host. In power down mode, only an external interrupt will wake the EM260. In deep
sleep mode, the EM260 will use its internal timer to wake up for scheduled events. The EM260 provides two
independent timers that the Host can use for any purpose, including waking up the EM260 from deep sleep
mode. Timers are set using the
The initial Frame Control Byte of every command tells the EM260 which sleep mode to enter after it has
responded to the command. Including this information in every command (instead of having a separate power
management command) allows the EM260 to be put to sleep faster. If the Host needs to put the EM260 to
sleep without also performing another action, the
In deep sleep mode, the EM260 will wake up for an internal event. If the event does not produce a callback for
the Host, the EM260 will go back to sleep once the event has been handled. If the event does produce a
callback, the EM260 will signal the Host and remain awake waiting for the
Control Byte of the
sleep after responding with the callback. However, if there is a second callback pending, the EM260 will
remain awake waiting for another
To avoid disrupting the operation of the network, only put the EM260 to sleep when it is not joined to a
network or when it is joined as a sleeping end device. If the EM260 is joined as a sleeping end device, then it
must poll its parent in order to receive messages. The Host controls the polling behavior using the
Data
result of every poll attempt is optionally reported using the
pollHandler
command. Polls are sent periodically with the interval set by the Host or a single poll can be sent. The
response.
Policy Settings
Datagram Replies
Callbacks
Power Management
callbacks, and the contents of the
callback
callback
command when there are no pending callbacks, it will reply with the
command specifies deep sleep mode, then the EM260 would normally go back to
setTimer
setPolicy
callback
command and generate
command.
command.
nop
unicastSent
command can be used.
pollCompleteHandler
and
timerHandler
callback
messageSent
callback
command. The EM260 will
callbacks.
callback
callback.
callbacks.
command. If the Frame
120-1003-000D
command. The
EM260
pollFor-
noCall-
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