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AS73211

Datasheet

• PUBLIC

DS000556

• v3-01 • 2018-Feb-07

│ 52

Figure 52:

– Address Bh

OPTREG

NAME

VALUE [b]

bit 7 to 1

0111001 (1)

Reserved

bit 0

INIT_IDX

Defining the index address is only possible via write

sequence and not affected by I²C STOP condition, which

is necessary, if the I²C master does not support the I²C

Repeated START condition.

1 (2)

Each I²C STOP condition sets the internal register

address to the default value. After writing an index

address, it is possible to change the data direction for

reading using I²C Repeated START condition.

(1)

Default value after power-on reset and software reset, but different, not relevant values after changing CREG1:GAIN or

CREG3:CCLK. The recommended write value is 0000000b in case of OPTREG:INIT_IDX should be changed.

(2)

Default value after power-on reset and software reset.

8.8

Output Register Bank

All output result registers are 16-bit registers. The registers read access is only possible if state

Measurement is activated. One exception offers register OSR, which is writable too. In that case one

byte is assigned to address 0h (see also chapter “Operational State Register – OSR”). But the reading

access of address 0h in Measurement state results in a first byte for OSR information and a second

byte for STATUS information.

Figure 53:

Output Result Register Bank

ADDRESS

(1)

[hex]

ACCESS

(2)

NAME

NUMBER

OF BITS

DESCRIPTION

OSR

8 (1)

Operational State Register

STATUS

8 (1)

Status Register

TEMP

16 (2)

Temperature Measurement Result (0h + 12bits for the

value)

MRES1

16 (2)

Measurement Result X-Channel

MRES2

16 (2)

Measurement Result Y-Channel

MRES3

16 (2)

Measurement Result Z-Channel

OUTCONVL

16 (2)

Time reference, result of conversion time measurement

(least significant byte and middle byte)

OUTCONVH

16 (2)

Time reference, result of conversion time measurement

(most significant byte and one empty byte with 00h)

(1)

Reading access of address 0h in measurement state results in a first byte for OSR information and a second byte for

STATUS information.

(2)

Least Significant Byte comes first.

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