AT88SC0404CRF(2008) 查看數據表（PDF） - Atmel Corporation

零件编号

产品描述 (功能)

生产厂家

AT88SC0404CRF
(Rev.:2008)

CryptoRF Specification

Atmel Corporation 

AT88SC0104/0204/0404/0808/1616/3216/6416CRF

4.1 Anticollision Command Definitions

Commands in this section are arranged in order by the hexadecimal code in the command byte.

4.2 REQB / WUPB Polling Commands [$05]

The REQB / WUPB command is used to search for PICCs in the RF field. The command and

response are ISO/IEC 14443-3:2001 compliant.

Reader

PICC

Command >

$05

AFI

PARAM

CRC1

CRC2

4.2.1

4.2.2

ATQB Response >

$50

PUPI 0

PUPI 1

PUPI 2

PUPI 3

APP 0

APP 1

APP 2

APP 3

Protocol 1

Protocol 2

Protocol 3

CRC1

CRC2

SUCCESS RESPONSE

System Zone Byte $00

System Zone Byte $01

System Zone Byte $02

System Zone Byte $03

System Zone Byte $04

System Zone Byte $05

System Zone Byte $06

System Zone Byte $07

$00

System Zone Byte $08

$51

Operation

The “Request B” (REQB) and “Wake-Up B” (WUPB) commands are used to probe the RF field

for Type B PICCs as the first step in the anticollision process. The response to an REQB or

WUPB command is the “Answer to Request B” (ATQB). PICCs in the Active State are not per-

mitted to answer this command.

Command Field Descriptions

AFI: The Application Family Identifier (AFI) is used to select the family and sub-family of cards

which the PCD is targeting. Only PICCs with a matching AFI code are permitted to answer an

REQB or WUPB command. Table 4-3 describes the AFI matching criteria. An AFI of $00 acti-

vates all Type B PICCs.

9

5276A–RFID–07/08

Share Link: