AS3955 datasheet(76/111 Pages) AMSCO

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[v1-01] 2015-Apr-29

AS3955 − Register Description

IO Configuration Register

Figure 83:

IO Configuration Register

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

1. Default value is loaded from EEPROM configuration block bits (IC_CFG2).

IC Configuration Registers

Figure 84:

IC Configuration Register 0

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

1. Default value is loaded from EEPROM configuration block bits (IC_CFG0).

Address 00h:

IO Configuration

Type: RW

Bit

Name

Default

Function

Comments

miso_pd2

1: pull down on MISO, when \SS is low and MISO is

not driven by the AS3955

miso_pd1

1: pull down on MISO when \SS is high

5rfu

4rfu

3rfu

2rfu

1rfu

0rfu

Address 01h:

IC Configuration 0

Bit

Name

Default

Function

Type

7slnt_mod

See note

1: Enable silent mode

6slnt_vl<2>

Silent mode voltage level (see Silent Mode)RO

5slnt_vl<1>

4slnt_vl<0>

arbit_mod

1: RF has priority access to EEPROM over SPI / I²C

i2c_addr3<2>

I²C slave address

i2c_addr2<1>

i2c_addr1<0>

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