PIN DESCRIPTION

PIN

DESCRIPTION

TYPE

POWER AND GROUND

VM

Supply voltage for power stages +12/5V

P12

VCC

Supply for 5V core

P5

DGND

Logic ground

G

AGND

Analog ground

G

DIGITAL PIN

PWMIN

PWM input signal to calculate kval

IC5

Fsys

System frequency

IC5

PHS

Phase Shift Pin

IC5

PRS

Prescaler Pin

IC5

STB

Start and Stop signal

ZD5

HFG

Open Drain F-Generator signal from Spindle Motor

OD5

HALL SENSOR

BIAS

3.3V reference to bias Hall sensor

OA5

H+, H-

Hall sensor differential input

IA5

INDUCTIVE SENSE REFERENCE

ISR

Inductive sense reference

IA5

MOTOR CONTROL

OUTV

Winding output U

OA12

OUTV

Winding output V

OA12

OUTW

Winding output W

OA12

RF

Current sense resistor (force)

OA12

RF1

Current sense resistor (sense)

IA5

SLEW RATE CONTROL

SRC

Slew Rate Control

OA5

INPUT DEFINITION

IC5

Input CMOS, 3.3-5V capability with hysteresis

ZD5

Bidirectional, open drain, 3.3-5V capability

OD5 Output, open drain, 3.3-5V capability

IA5

Input, Analog, 5V

OA5 Output, Analog, 5V

OA12 Output, Analog, 12V

P12

Power 12V / 5V

P5

Power 5V

G

Ground

L7203

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