AS3955 datasheet(78/111 Pages) AMSCO

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[v1-01] 2015-Apr-29

AS3955 − Register Description

Status Display Registers

Figure 87:

RFID Status Display Register

Figure 88:

IC Status Display Register

Note(s) and/or Footnote(s):

1. Default is set during production

Address 04h: RFID Status Display

Bit

Name

Function

Type

7hf_pon

1: PICC AFE is active

6state<3>

0000: POWER OFF

0001: SENSE

0011: RESOLUTION

0010: RESOLUTION_L2

0110: SELECTED

0111: SECTOR_2

1111: SECTORX_2

1110: SELECTEDX

1010: SENSEX_L2

1011: SENSEX

1001: SLEEP

5state<2>

4state<1>

3state<0>

state_notvalid

1: State update – indicates that the state is not valid

1rfu

0rfu

Address 05h: IC Status Display

Bit

Name

Default

Function

Type

7ee2k

see note (1)

6i2c

5chipkill_2

Signal depends on the CHIP_KILL value at

initialization

4chipkill_1

Signal depends on the CHIP_KILL value at

initialization

auth_locked

Signal depends on the AUTH_CNT value

2rfu

1rfu

0rfu

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