9/20

BD16936EFV-M

TSZ02201-0G1G0B300360-1-2

© 2013 ROHM Co., Ltd. All rights reserved.

www.rohm.com

TSZ22111・15・001

19.Jun.2015 Rev.002

Operation of Each Block

1. Serial Peripheral Interface: SPI

CSB

SDI

SCK

SDO

( TER=0 )

MSB

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

LSB

0

MSB

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

LSB

0

SDO

( TER=1 )

All "High"

X

X

X：Unstable state

TER (Internal Signal) :

” 0 ” in normal operation / ” 1 ” in detecting erroneous SPI transmission

16bit serial interface is equipped to control ON / OFF of driver and various protections as well as to read out the state of

protections. Input / Output register and its functions are described below.

(1) Input Data Register

Bit

Number

Name

Description

Bit Status

Initial

Value

15

SRR

Status Reset Register

( This bit is self clear )

0 : Normal

1 : Reset

0

14

HSC1

Control High side 1

0 : High side Off

1 : High side On

0

13

LSC1

Control Low side 1

0 : Low side Off

1 : Low side On

0

12

HSC2

Control High side 2

0 : High side Off

1 : High side On

0

11

LSC2

Control Low side 2

0 : Low side Off

1 : Low side On

0

10

HSC3

Control High side 3

0 : High side Off

1 : High side On

0

9

LSC3

Control Low side 3

0 : Low side Off

1 : Low side On

0

8

HSC4

Control High side 4

0 : High side Off

1 : High side On

0

7

LSC4

Control Low side 4

0 : Low side Off

1 : Low side On

0

6

HSC5

Control High side 5

0 : High side Off

1 : High side On

0

5

LSC5

Control Low side 5

0 : Low side Off

1 : Low side On

0

4

HSC6

Control High side 6

0 : High side Off

1 : High side On

0

3

LSC6

Control Low side 6

0 : Low side Off

1 : Low side On

0

2

TSDSTH

TSDS Register Mode

0 : Latch

1 : Through

0

1

PSSTH

OVPS / UVLOS Register Mode

0 : Latch

1 : Through

0

0

RESERVE

RESERVE

0 : Normal

1 : Prohibit

0

Input of High Side ON and Low Side ON via SPI control is prohibited. The input f High Side ON and Low Side ON results

in High Side OFF and Low Side OFF state.

Daisy chain is not recommended due to its reliability concern. Connect Chip Select (CSB) to each device and run by SPI

parallel control instead.

Figure11:SPI Communication Format