TPIC8101

KNOCK SENSOR INTERFACE

SLIS110A − APRIL 2003 − REVISED MAY 2005

3

POST OFFICE BOX 655303

Terminal Functions

TERMINAL

NAME

NO.

TERMINAL TYPE

(PULLUP/PULLDOWN)

DESCRIPTION

VDD

1

I

5-V input supply

GND

2

I

Ground connection

Vref

3

O

Supply reference generator with external bypass capacitor

OUT

4

O

Buffered integrator output

NC†

5, 6

No connection

INT/HOLD

7

I / Pulldown

Selectable for integrate (high) or hold (low) mode (with internal pulldown)

CS

8

I / Pullup

Chip select for SPI communications (active low with internal pullup)

XIN

9

I

Inverter input for oscillator

XOUT

10

O

Inverter output for oscillator

SDO

11

O

Serial data output for SPI bus

SDI

12

I / Pullup

Serial data input line

SCLK

13

I / Pullup

SPI clock

TEST

14

I / Pullup

Test mode (active low), open for normal operation

CH2P

15

I

Positive input for amplifier #2

CH2N

16

I

Negative input for amplifier #2

CH2FB

17

O

Output of amplifier #2, for feedback connection

CH1FB

18

O

Output of amplifier #1, for feedback connection

CH1N

19

I

Negative input for amplifier #1

CH1P

20

I

Positive input for amplifier #1

† These terminals are to be used for test purposes only and are no connected in the system application. No signal traces should be connected

to the NC terminals.