AS3955 datasheet(81/111 Pages) AMSCO

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ams Datasheet

Page 81

[v1-01] 2015-Apr-29

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AS3955 − Register Description

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

1. Power-up and Set Default command reset the content of this register to 0. After Interrupt Register has been read, its content is set

again to 0.

Buffer Registers

Figure 93:

Buffer Status Register 2

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

1. Power-up and commands Set Default and Clear Buffer reset the content of this register to 0.

2I_io_eewr

IRQ due to successful termination of EEPROM programming. In

case EEPROM write command was sent through SPI / I²C

1I_eeac_err

IRQ due to EEPROM write on write protected block or write to

non-existing address

I_acc_err

IRQ due to interruption of SPI / I²C operation on buffer, EEPROM

or registers due to access control

Address 0Ch:

Buffer Status Register 2

Bit

Name

Function

Type

buf_len_invalid

Buffer content is being changed – data length not valid

6rfu

buf_len<5>

Number of data bytes (binary coded) in the buffer not yet read

out. Valid range is from 000000b to 100000b – 000000b means

that there are no data bytes to be read out

buf_len<4>

buf_len<3>

buf_len<2>

buf_len<1>

buf_len<0>

Address 0Bh:

Interrupt Register 1

Bit

Name

Function

Type

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