AT86RF211DB-868LT Atmel, AT86RF211DB-868LT Datasheet - Page 13

• Manufacturer Part Number: AT86RF211DB-868LT
• Description: BOARD DAUGHTER AT86RF211/868MHZ
• Manufacturer: Atmel

Specifications of AT86RF211DB-868LT

• Module/board Type: Daughter Board
• For Use With/related Products: AT86RF211 @ 866MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: AT86RF211-DB868107; AT86RF211DB868107; AT86RF211DB868107; AT86RF211DB868LT

How to Wake-up (a)
Distant Device(s)?
General Rules
Typical Applications
Individual Addressing
2186A–WIRE–08/02
As indicated in chapter 1-2:
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Each device has got its own address (the Address field must be long enough to allow
that).
Example:
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Values of registers (to set-up and put transceiver into sleep):
- CTRL1: WUEN = '1', PDN = '0'(so bit 26 = '1' and bit 31 = '0')
- WUR: WUOP = '00', RATECHK = '1', RATE = '0000111111', RATETOL = '00110' so
WUR = '00 1000 0111 1110 0110'
RATETOL is set to 6 x 1.56 µs
- WUA: ADDL = '00010', ADD = '00000000000000000xx0' (2 bits in bold depending on
the device: 00,01,10,11), so for the 4 devices:
WUA = '0 0010 0000 0000 0000 0000 0000'
WUA = '0 0010 0000 0000 0000 0000 0010'
WUA = '0 0010 0000 0000 0000 0000 0100'
WUA = '0 0010 0000 0000 0000 0000 0110'
Only the 3 last bits are significant for ADD. The 17 MSB bits are 'don't care', but the 20
bits of ADD must be written.
WL2 must be > 2 x message duration, to make sure to catch it
wake-up message duration must be > (1 ms + WPER + 8 ms + WL1) + 20%
when a correct message has been received, even with no Data field, the application
MUST read at least one bit in the DATA register to acknowledge the wake-up (pin +
STATUS bit) and enable other wake-up sequences.
a 4-device network: a 2-bit Address field is required (+ the extra bit '0').
No Data needed
Stuff mechanism inhibited
WAKEUP pin active low
Data rate = 10 kbits/s, i.e. 100 µs per bit, with tolerance = 10% for the Address field.
Rate Check filtering is activated
Wake-up test every second
RSSI test after 2 ms, total test duration = 6 ms (WL1 = 2 ms + WL2 = 4 ms)
Message duration = 1.3 ms (= (10+2+1) bits x 100 µs). WL2 is chosen to be twice
the message length to make sure to catch it.
AT86RF211 (TRX01)
13