34921 datasheet(4/36 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

34921

TERMINAL CONNECTIONS

3.3 V SWITCH

3.3 V Switching

Regulator Switch

Output

3.3 V regulator switching output.

3.3 V

3.3 V Regulator

Feedback

Feedback terminal for 3.3 V switching regulator and internal logic supply.

CORE SUPPLY

Core Voltage

Regulator Input

Core regulator input supply.

CORE

Core Voltage

Regulator Output

Core regulator output voltage.

14, 15

ADCMA

DC Motor A Output A

DC motor driver A output A.

18, 19

ADCMB

DC Motor A Output B

DC motor driver A output B.

VBOOST

Boost Voltage

Boost voltage storage node.

CP2

Switching Capacitor 2

Charge pump capacitor connection 2.

CP1

Switching Capacitor 1

Charge pump capacitor connection 1.

GATEOUT

High-Side MOSFET

Gate Driver

Gate driver for external N-channel switch.

30, 31

BDCMB

DC Motor B Output B

DC motor driver B output B.

34, 35

BDCMA

DC Motor B Output A

DC motor driver B output A.

5 V SELECT

5.0 V Regulator Mode

Select

5.0 V regulator operating mode select.

5 V SWITCH

5.0 V Switching

Regulator Switch

Output

5.0 V switching regulator switching output.

5 V SUPPLY

5.0 V Regulator Input

Supply

5.0 V regulator input voltage.

5 V

5.0 V Regulator

Feedback

5.0 V regulator feedback.

AN0/ANALOGOUT_A

AN0/Analogout_A

A/D input 0 or analog encoder output A.

AN1/ANALOGOUT_B

AN1/Analogout_B

A/D input 1 or analog encoder output B.

AN2/ANALOGIN_A

AN2/Analogin_A

A/D input 2 or analog encoder input A.

AN3/ANALOGIN_B

AN3/Analogin_B

A/D input 3 or analog encoder input B.

ENC_FILTB

Analog Encoder

Channel B Filter

I/V amplifier channel B filter.

ENC_FILTA

Analog Encoder

Channel A Filter

I/V amplifier channel A filter.

RST

Reset

Reset input and output.

MISO

Master In Slave Out

Serial data out to MCU.

MOSI

Master Out Slave In

Serial data in from MCU.

SCLK

Serial Clock

Serial data clock.

Table 1. Terminal Function Description (continued)

A functional description of each terminal can be found in the Functional Terminal Description section beginning on page 18

Terminal

Terminal Name

Formal Name

Definition

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