AS3956 datasheet(39/109 Pages) AMSCO

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ams Datasheet

Page 39

[v1-10] 2018-Apr-27

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AS3956 − Detailed Description

Configuration Byte AUTH_CFG

Figure 37:

Configuration Byte AUTH_CFG

Note(s):

1. This byte can always be accessed for read and write via SPI / I²C and can be accessed for read and write from the RF side if chip is in

AUTHENTICATED state and configuration bit auth_set is 1.

Bits auth_w and auth_r define for which operations the

authentication is needed. If a lock bit is set for a certain block,

then write cannot be performed even if IC is in AUTHENTICATED

state. This means that lock bits overrule authentication.

Configuration Byte SENSR1

Figure 38:

Configuration Byte SENSR1

Note(s):

1. This byte can always be accessed for read and write via SPI / I²C and can be accessed for read and write from the RF side if rfcfg_en

is set to 1.

Conf. Bit

Name

Default

Function

Note

rfu

auth_w<1>

Authentication is required for writing

auth_r<0>

Authentication is required for reading

Conf. Bit

Name

Default

Function

Note

sens_res<15>

SENS_RES response byte 2 on SENS_REQ

sens_res<14>

sens_res<13>

sens_res<12>

sens_res<11>

sens_res<10>

sens_res<9>

sens_res<8>

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