QS7785PF/CF

NIPPON PRECISION CIRCUITS—7

Serial Interface Timing

3-wire (QS7785PF) timing

QS7785CF

4.0

–

–

µs

QS7785CF

4.0

–

–

µs

QS7785CF

5.0

–

–

µs

QS7785CF

250

–

–

ns

SCL clock HIGH-level pulsewidth

QS7785CF

4.0

–

–

µs

QS7785CF

4.7

–

–

µs

QS7785CF

–

–

1000

ns

QS7785CF

–

–

300

ns

Pin

Description

SDA

Data signal. Sets mode settings. See “Operating Modes.”

SCL

Clock signal. Data is read on the rising edge.

STRB

Strobe signal. Mode switches occur on the rising edge of this signal.

Pin

Description

SDA

Data signal. Sets slave address and mode settings. Address value, {1011011}, is shown in the figure above. See “Operating Modes.”

SCL

Clock signal. Data is read on the rising edge.

Parameter

Symbol

Condition

Rating

Unit

min

typ

max

SCL

BYP

SP

MONO

AC

STRB

SDA

3

t

4

t

7

t

6

t

1

t

0

t

2

t

SUR

BASS

MUTE

PSAVE

5

t

SCL

BYP

SP

SDA

MONO

AD0

AD6

f

t

r

t

HD:STA

t

SU:STO

t

I C address is {AD6

− AD0} = {1011011}

2

SUR

HIGH

t

LOW

t

SU:DAT

t

HD:DAT

t

AC

BASS

MUTE

PSAVE