RX95HF datasheet(20/44 Pages) STMICROELECTRONICS

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Commands

RX95HF

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DocID023884 Rev 3

5.8

Idle command (0x07) description

This command switches the RX95HF into low consumption mode and defines the way to

return to Ready state.

The Result code contains the Wake-up flag register value indicating to the application the

wake-up event that caused the device to exit WFE mode.

Table 16. Format of data to be sent using SEND command

Protocol

Explanation

Response example

Comments

ISO/IEC-

14443

Type A

Send example

06 03 0400

>>>0x0603040008

Command code

Length of entire data field

Data

Parameter:

7:6: RFU

5: Append CRC

4: RFU (Do not append parity)

3:0: Number of significant bits in first

byte

Table 17. IDLE command description

Direction

Data

Comments

Example

Host to

RX95HF

Command code

Example of switch from Active

mode to Hibernate state (wake-up

by low pulse on IRQ_IN pin):

>>>0x07 0E 08 04 00 04 00

18 00 00 00 00 00 00 00 00

Example of switch from Active to

WFE mode (Sleep) (wake-up by

low pulse on IRQ_IN pin):

>>>0x07 0E 08 01 00 38 00

18 00 00 60 00 00 00 00 00

Example of switch from Active

mode to WFE mode (Field

Detector) with wake-up by Field

Detection:

>>> 0x07 0E 04 01 42 38 00

18 00 00 60 00 00 00 00

Length of data

Specifies authorized wake-

up sources and the LFO

frequency

EnterCtrlL

Settings to enter WFE

mode: 0x0400, 0x0100 or

0x0142

EnterCtrlH

WUCtrlL

Settings to wake-up from

WFE mode: 0x0400 or

0x3800

WUCtrlH

LeaveCtrlL

Settings to leave WFE

mode (Default value =

0x1800

)

LeaveCtrlH

RX95HF to

Host

0x00

Result code

This response is sent only when

RX95HF exits WFE mode.

<<<0x000104

Wake-up by field

detect

<<<0x000108

Wake-up by low

pulse on IRQ_IN pin

0x01

Length of data

<Data>

Data (Wake-up source):

0x04: Field detect

0x08: Low pulse on

IRQ_IN pin

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