MC34920EIR2 Ver la hoja de datos (PDF) - Freescale Semiconductor
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MC34920EIR2 Datasheet PDF : 29 Pages
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FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
Table 8. Serial Input Port Definition for DR1 = Step / DR2 = DC Motor Mode
Name
V2_Enable
Not Used
Not Used
Not Used
Not Used
Not Used
DR2_DIR_DCM
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
X
Not used in this mode.
3
X
Not used in this mode.
4
X
Not used in this mode.
5
X
Not used in this mode.
6
X
Not used in this mode.
7
0
Controls the direction of the current flow through the DC motor. A logic [1] level
causes conventional current flow from DR2A1 (source) /DR2A2 (source) to DR2B1
(sink) / DR2B2 (sink).
SDR1_CURR_I1_PHASEB
8
1
Second of two inputs that control the current level in the SDR1DR1 step motor
Phase B winding.
SDR1_CURR_I0_PHASEB
9
1
One of two inputs that control the current level in the SDR1 step motor Phase B
winding.
SDR1_DIR_PH_B
10
1
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).
SDR1_CURR_I1_PHASEA
11
0
Second of two inputs that control the current level in the SDR1 step motor Phase A
winding.
SDR1_CURR_I0_PHASE
12
1
One of two inputs that control the current level in the SDR1 step motor Phase A
winding.
SDR1_DIR_PH_A
13
1
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
16
Analog Integrated Circuit Device Data
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