L8229 datasheet(26/42 Pages) STMICROELECTRONICS

26 / 42 page

Obsolete

Product(s)

- Obsolete

Product(s)

L8229_0 and L8229_1 modes

L8229

26/42

8.4

W2 (FUNCTIONAL: Bit 2=1, Bit 1=0)

This word is mainly used to set the functional mode

Table 21.

BIT #

NAME

RESET

VALUE

DESCRIPTION

CHIP ADDRESS

This bit is used to select if the informations provided by bits 1 to 15 are

referred to chip 0 or chip 1. This is useful in the case that two L8229 are

present on the same board and a single nCS line is used.

WORD ADDRESS 1

This is the LSB of the two bits used to address the word.

WORD ADDRESS 2

This is the MSB of the two bits used to address the word.

MIX/SLOW 1 (St. mot)

This bit is to decide if Slow or Mixed Decay is applied to Bridge 1

(Stepping motor).

MIX/SLOW 2 (St. mot)

This bit is to decide if Slow or Mixed Decay is applied to Bridge 2

(Stepping motor).

REFERENCE INT/EXT

This bit is used to decide if the reference voltage will be internal (0) or

external (1)

6RANGE

This bit is to decide if the reference voltage will be divided by 10 (0) or

by 5 (1).

BLANK LSB

This is the LSB bit used to fix the Blanking time (see following

Table 30).

8BLANK MSB

This is the MSB bit used to fix the Blanking time (see following

Table 30).

9OSC LSB

This is the LSB bit used to fix the Oscillator values (see following

Table 29).

OSC MSB

This is the MSB bit used to fix the Oscillator values (see following

Table 29).

TEST 1

This bit is used for trim mode.

TEST 2

This bit is used for trim mode.

TEST 3

This bit is used for trim mode.

STEP/DC

This bit is used to set the drive of a Stepping Motor (0) or a DC Motor

(1).

SLOW/FAST (DC mot)

This bit is used to decide if Slow (0) or Fast (1) decay is applied to DC

Motor configuration

L8229 датащи(PDF) 26 Page - STMicroelectronics

L8229 датащи(HTML) 26 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

датащи скачать

ссылки URL