L9300 datasheet(34/182 Pages) STMICROELECTRONICS

34 / 182 page

Figure 16. WS compatibility

GADG1307171134PS

Three level current

WSx pin

(VDA compliant sensor

with Manchester encoded

information)

Data and diagnostic by SPI: Three level sensors have eight data bits and a parity bit which are written into the register upon

receiving. At higher speeds not all bits can be transmitted The data register for each wheel contains the number of data bits

received between two speed pulses

Two level current

(Standard compliant sensor

with only speed information)

Two level current PWM

(One pulse per tooth with data

encoded in pulse width)

Two level current PWM

(Two pulse per tooth with

data and diagnostic encoded

in pulse width)

Data by WSx pin (Pass-through mode)

Data by WSx pin and duty cycle info by SPI

(Normal mode)

(Pass-through mode)

WSx pin

Data by WSx pin and duty cycle info by SPI

(Normal mode)

(Pass-through mode)

db0

45 µs -> right rotation

45 µs

n x 45 µs

90 µs

90 µs -> left rotation

28 mA

ITH2

ITHopen

ITH1

14 mA

7 mA

ITH1

14 mA

7 mA

ITH1

14 mA

7 mA

high high low high low high high high high

db1 db2 db3 db4 db5 db6 db7

L9300

TRK 1, 2, 3, 4

DS12258 - Rev 4

page 34/182

L9300 Datasheet(PDF) 34 Page - STMicroelectronics

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