PIN CONNECTIONS
Table 1. 34920 Pin Definitions (continued)
Pin Number Pin Name
Formal Name
Definition
Motor driver output.
21
22
24
25
26
27
32
33
34
36
DR1B1
DR1PWM
DR2PWM
DR1B2
Driver 1, Bridge 1, Output B
Driver 1 PWM Input
PWM input for Driver 1. Used only when DR1_MODE pin = 0.
PWM input for Driver 2. Used only when DR2_MODE pin = 0.
Motor driver output.
Driver 2 PWM Input
Driver 1, Bridge 2, Output B
Driver 1, Bridge 2, I Sense
Driver 1, Bridge 2, Output A
Driver 2, Bridge 2, Output B
Driver 2, Bridge 2, I Sense
Driver 2, Bridge 2, Output A
Current sense for current mode.
Motor driver output.
DR1SENSE2
DR1A2
Motor driver output.
DR2B2
Current sense for current mode.
Motor driver output.
DR2SENSE2
DR2A2
Switching output for V2 regulator.
V2_SWITCH Internal MOSFET Source for V2
Regulator
Selects operational mode of Driver 2. Step = 1/DC = 0.
Switch output for V2 regulator.
37
38
41
42
43
44
DR2_MODE
V2_FB
SDI
Mode Select for Driver 2
V2 Regulator Feedback Input
Serial Port Data Input
Serial input register serial data input.
Serial input register clock.
SCLK
CS
Serial Data Port Clock
Serial Data Port Chip Select
Analog Ground
Serial input register chip select input. Active low.
Ground connection for analog circuitry.
AGND
34920
Analog Integrated Circuit Device Data
Freescale Semiconductor
4
FREESCALE [ Freescale ]
