CLRC632 データシートの表示（PDF） - NXP Semiconductors.

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CLRC632

Standard multi-protocol reader solution

NXP Semiconductors. 

NXP Semiconductors

CLRC632

Standard multi-protocol reader solution

Table 8. SPI read address

Address

(MOSI)

Bit 7

Bit 6

(MSB)

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

(LSB)

byte 0

1

address address address address address address reserved

byte 1 to byte n reserved address address address address address address reserved

byte n + 1

0

0

0

0

0

0

0

0

[1] All reserved bits must be set to logic 0.

9.1.4.2 SPI write data

The structure shown in Table 9 must be used to write data using SPI. It is possible to write

up to n-data bytes. The first byte sent defines both the mode and the address.

Table 9.

MOSI

MISO

SPI write data

Byte 0

address

XX

Byte 1

data 0

XX

Byte 2

data 1

XX

The address byte must meet the following criteria:

... Byte n

... data n  1

... XX

Byte n + 1

data n

XX

• the MSB of the first byte sets the mode. To write data to the CLRC632, the MSB is set

to logic 0

• bits [6:1] define the address

• the LSB should be set to logic 0.

SPI write mode writes all data to the address defined in byte 0 enabling effective write

cycles to the FIFO buffer.

Table 10. SPI write address

Address line Bit 7 Bit 6

(MOSI)

(MSB)

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

(LSB)

byte 0

0

address address address address address address reserved

byte 1 to byte data data

data

data

data

data

data

data

n+1

[1] All reserved bits must be set to logic 0.

Remark: The data bus pins D7 to D0 must be disconnected.

Refer to Section 13.4.4 on page 106 for the timing specification.

CLRC632

Product data sheet

COMPANY PUBLIC

All information provided in this document is subject to legal disclaimers.

Rev. 3.7 — 27 February 2014

073937

© NXP Semiconductors N.V. 2014. All rights reserved.

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