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NRF52811-QCAA-R7 Datasheet(PDF) 78 Page - Nordic Semiconductor

Part # NRF52811-QCAA-R7
Description  nRF52811
PDF  444 Pages
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Manufacturer  NORDIC [Nordic Semiconductor]
Direct Link  https://www.nordicsemi.com/
Logo NORDIC - Nordic Semiconductor

NRF52811-QCAA-R7 Datasheet(HTML) 78 Page - Nordic Semiconductor

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Peripherals
AAR
ADDR
Scratch area
IRK data
structure
ADDR: resolvable address
ADDRPTR
SCRATCHPTR
IRKPTR
S1
L
S0
RESOLVED
START
Figure 23: Address resolution with packet preloaded into RAM
6.2.3 Use case example for chaining RADIO packet reception with
address resolution using AAR
The AAR may be started as soon as the 6 bytes required by the AAR have been received by the RADIO and
stored in RAM. The ADDRPTR pointer must point to the start of packet.
AAR
S0
ADDR
L
S1
Scratch area
IRK data
structure
RADIO
RXEN
From remote
transmitter
S0: S0 field of RADIO (optional)
L: Length field of RADIO (optional)
S1: S1 field of RADIO (optional)
ADDR: resolvable address
PACKETPTR
ADDRPTR
SCRATCHPTR
IRKPTR
RESOLVED
START
Figure 24: Address resolution with packet loaded into RAM by the RADIO
6.2.4 IRK data structure
The IRK data structure is located in RAM at the memory location specified by the IRKPTR register.
Property
Address offset
Description
IRK0
0
IRK number 0 (16 - byte)
IRK1
16
IRK number 1 (16 - byte)
..
..
..
IRK15
240
IRK number 15 (16 - byte)
Table 20: IRK data structure overview
6.2.5 Registers
Base address
Peripheral
Instance
Description
Configuration
0x4000F000
AAR
AAR
Accelerated address resolver
Table 21: Instances
Register
Offset
Description
TASKS_START
0x000
Start resolving addresses based on IRKs specified in the IRK data structure
TASKS_STOP
0x008
Stop resolving addresses
EVENTS_END
0x100
Address resolution procedure complete
4454_140 v1.0
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