MC34920EIR2 Ver la hoja de datos (PDF) - Freescale Semiconductor

Número de pieza

componentes Descripción

Fabricante

MC34920EIR2

2.8 Ω (Typ) Quad H-Bridge Motor Driver

Freescale Semiconductor 

FUNCTIONAL DESCRIPTION

FUNCTIONAL INTERNAL BLOCK DESCRIPTION

SERIAL INPUT PORT BIT DEFINITIONS

Tables 6 through 9 define the bit definitions as they apply to the 13 bits of input that are brought into the 34920 through the

serial input port. These signals are listed in bit order from LSB (first bit to be shifted in) to MSB (last bit to be shifted in).

Name

V2_Enable

SDR2_CURR_I1_PHASEB

SDR2_CURR_I0_PHASEB

SDR2_DIR_PH_B

SDR2_CURR_I1_PHASEA

SDR2_CURR_I0_PHASEA

SDR2_DIR_PH_A

SDR1_CURR_I1_PHASEB

SDR1_CURR_I0_PHASEB

SDR1_DIR_PH_B

SDR1_CURR_I1_PHASEA

SDR1_CURR_I0_PHASEA

SDR1_DIR_PH_A

Table 6. Serial Input Port Definition for Step / Step Mode

Bit

Reset

Value

Description

1

1

Enable bit to turn on and off the V2 regulator and the motor drivers and place the

34920 in the minimum power consumption state.

2

1

Second of two inputs that control the current level in the SDR2 step motor Phase B

winding.

3

1

One of two inputs that control the current level in the SDR2 step motor Phase B

winding.

4

0

Controls the direction of the current flow through Phase B of the SDR2 step motor.

A logic [1] level causes conventional current flow from PH_B+ (source) to PH_B-

(sink).

5

1

Second of two inputs that control the current level in the SDR2 step motor Phase A

winding.

6

1

One of two inputs that control the current level in the SDR2 step motor Phase A

winding.

7

0

Controls the direction of the current flow through Phase A of the SDR2 step motor.

A logic [1] level causes conventional current flow from PH_A+ (source) to PH_A-

(sink).

8

1

Second of two inputs that control the current level in the SDR1 step motor Phase B

winding.

9

1

One of two inputs that control the current level in the SDR1 step motor Phase B

winding.

10

0

Controls the direction of the current flow through Phase B of the SDR1 step motor.

A logic [1] level causes conventional current flow from PH_B+ (source) to PH_B-

(sink).

11

1

Second of two inputs that control the current level in the SDR1 step motor Phase A

winding.

12

1

One of two inputs that control the current level in the SDR1 step motor Phase A

winding.

13

0

Controls the direction of the current flow through Phase A of the SDR1 step motor.

A logic [1] level causes conventional current flow from PH_A+ (source) to PH_A-

(sink).

34920

14

Analog Integrated Circuit Device Data

Freescale Semiconductor

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