Datasheet

PN532_C1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.6 — 28 November 2017
115436 82 of 222
NXP Semiconductors
PN532/C1
Near Field Communication (NFC) controller
Remark: The following figure explains how bits CPOL and CPHA can be used.
Fig 18. SPI Data transfer format
1
2
3
4
5
67
8
Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6
Bit 7 Bit 8
Bit 1 Bit 2
Bit 3 Bit 4
Bit 5
Bit 6 Bit 7 Bit 8
1
23 4
56 7
8
Bit 1 Bit 2
Bit 3
Bit 4 Bit 5
Bit 6
Bit 7
Bit 8
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5 Bit 6 Bit 7
Bit 8
SCK (CPOL=0)
SCK (CPOL =1)
NSS
CPHA = 0
Cycle
MOSI
MISO
CPHA = 1
Cycle
MOSI
MISO