ST7MC1K2 datasheet(262/371 Pages) STMICROELECTRONICS

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AN weight register (MWGHT)

Equation 10

where (*) depends on the DCB bit in the MCRA register.

Prescaler and sampling register (MPRSR)

MWGHT

Reset value: 0000 0000 (00h)

654

AN[7:0]

R/W

Table 122.

MWGHT register description

Bit

Name

Function

7:0 AN[7:0]

A weight value

These bits contain the AN weight value for the multiplier. In autoswitched mode the

MCOMP register is automatically loaded when a Z event occurs (see Equation 10).

MPRSR

Reset value: 0000 0000 (00h)

654

SA[3:0]

ST[3:0]

R/W

Table 123.

MPRSR register description

Bit

Name

Function

7:4 SA[3:0]

Sampling ratio

These bits contain the sampling ratio value for current mode. Refer to Table 105:

Sampling frequency selection on page 238.

3:0 ST[3:0]

Step ratio

These bits contain the step ratio value. It acts as a prescaler for the MTIM timer and

is auto incremented/decremented with each R+ or R- event. Refer to Table 98: Step

frequency/period range (4 MHz) on page 226 and Table 99: modes of accessing

mtim timer-related registers on page 226.

Zn x MWGHT

256(d)

Zn-1 x MWGHT

256(d)

(*)

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