Table of Contents
Advertisement
NXP Semiconductors
Following figure shows the SPI protocol CPHA = 0 & NSS_PULSE = 0.
The SPI master automatically generates NSS signal. Its polarity can be configured, and it
can be chosen to generate a pulse on NSS between each byte. If more flexibility is
needed, then FW can program itself the value to output to NSS, using NSS_CTRL=1
(override internal value), and choosing the value to output to NSS_VAL.
14.2.5 Packet structure
The structure of the packet to be sent/received is described in
consists of:
• Payload: up to 511 bytes
• CRC: Redundancy code, computed on payload
UM10858
User manual
COMPANY PUBLIC
Fig 50. SPI protocol with CPHA = 1 & NSS_PULSE = 0
Fig 51. SPI protocol with CPHA = 0 & NSS_PULSE = 1
All information provided in this document is subject to legal disclaimers.
Rev. 1.4 — 14 May 2018
314514
UM10858
PN7462 family HW user manual
Fig
52. The packet
© NXP B.V. 2018. All rights reserved.
253 of 345
Advertisement
Table of Contents
