BH3856 데이터 시트보기 (PDF) - ROHM Semiconductor

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BH3856

2-wire serial sound control IC

ROHM Semiconductor 

Audio ICs

!Performing data settings

(1) I2C BUS timing

Parameter

SCL clock frequency

SCL clock hold time, HIGH state

SCL clock hold time, LOW state

SDA and SDL signal start-up time

SDA and SDL signal shut-down time

Set-up time for re-send [start] conditions

Hold time (re-send) [start] conditions

(After hold time ends, initial clock

pulse is generated.)

Set time for [stop] conditions.

Bus free time between [stop] condition

and [start] condition

Data set-up time

BH3856S / BH3856FS

Symbol Min. Typ. Max. Unit

fSCL

0

−

100

kHz

tHIGH

4

−

−

µs

tLOW

4.7

−

−

µs

tr

−

−

1

µs

tf

−

−

0.3

µs

tSU;STA

4.7

−

−

µs

tHD;STA

4

−

−

µs

tSU;STO

4.7

−

−

µs

tBUF

4.7

−

−

µs

tSU;DAT

250

−

−

ns

SLC

SDA start condition

tr

tf

tLOW

tHIGH

tSU ; STA

tHD ; STA

SDA stop condition

tSU ; STO

tBUF

SDA

tSU ; DAT

tHD ; DAT

tSU ; STA = start code set-up time.

tHD ; STA = start code hold time.

tSU ; STO = stop code set-up time.

tBUF = bus free time.

tSU ; DAT = data set-up time.

tHD ; DAT = data hold time.

I2C BUS timing rules

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