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AS8510

Datasheet - Detailed Descr i p ti on

7.9.3 Soft-reset of Device Using Bit D[7] of Reset Register 0x09

It is possible to soft-reset the device by writing “0” into D[7] bit of Reset Register at 0x09. On applying soft-reset, the device enters into

initialization state and D[6] bit changes back to “1”. The duration period of Initialization is 500

μsec, and, during this period, INT pin toggles at the

rate of internal low power oscillator. Toggling on INT during the period of initialization should be ignored in the system. Device configuration and

activation should be carried out only after the initialization period. See Figure 17 for the timing details of the sequence of device initialization on

soft-reset.

Figure 17. AS8510 Device Initialization Sequence at Soft-reset

7.9.4 Soft-reset of the Measurement Path Using Bit D[7] of Reset Register 0x09

Measurement path also can be reset by using D[6] bit of Reset Register at 0x09. On applying soft-reset only signal measurement path registers

will be reset. For applying this reset, device should be in STOP state. If the device is working with external clock, at the time of soft-reset the

clock needs to be disabled.

Table 34. Valid Combinations of Modulator Clock, Chopper Clock and Decimation Ratio R1

Modulator Clock

Chopper Frequency

CHOP_CLK

Decimation Ratio R1

R2/(2*CHOP_CLK)

for R2=4

1.024MHz

2KHz

64

1usec * 64 * [4 - 2.5] = 96usec

1mSec

2.048MHz

2KHz

64

0.5usec * 64 * [8 - 2.5] = 176usec

1mSec

2.048MHz

2KHz

128

0.5usec * 128 * [4 - 2.5] = 96usec

1mSec

2.048MHz

4KHz

64

0.5usec * 64 * [4 - 2.5] = 48usec

0.5mSec

DATA-N

DATA-N+1

D4

D1

D2

D3

D4

D1

Re-Configure

Device

Start

ADC

INT

CHOP_CLK

Channel Data

Register

0x0000

DATA1

DATA2

D1

D2

D

3

D4

D1

D2

D3

D4

D1

D2

D3

D4

500µS

1.5mS

Soft Reset

UsingD7