JN517X Datasheet, PDF (29/100 Pages) NXP Semiconductors – Supports multiple network stacks

NXP Semiconductors
JN517x
IEEE802.15.4 Wireless Microcontroller
ADE
ADO
TX active
RX active
1^st TX-RX cycle
2^nd TX-RX cycle (1^st retry)
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Fig 18. Antenna diversity ADO signal for TX with acknowledgement
If two DIO pins cannot be spared, one of the signals (ADE or ADO) from the JN517x can
be used and its complement can be generated using an inverter on the PCB.
9.7.2 Modem
The modem performs all the necessary modulation and spreading functions required for
digital transmission and reception of data at 250 kbits/s in the 2.4 GHz radio frequency
band in compliance with the IEEE802.15.4 standard.
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Fig 19. Modem architecture
DDD
Features provided to support network channel selection algorithms include Energy
Detection (ED), Link Quality Indication (LQI) and fully programmable Clear Channel
Assessment (CCA).
The modem provides a digital Receive Signal Strength Indication (RSSI) that facilitates
the implementation of the IEEE802.15.4 ED and LQI functions.
JN517X
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2.0 — 8 November 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
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