QS7785 NPC [Nippon Precision Circuits Inc], QS7785 Datasheet - Page 7

• Manufacturer Part Number: QS7785
• Description: 3D 2/4-Channel Stereo Surround Synthesizer
• Manufacturer: NPC [Nippon Precision Circuits Inc]

Serial Interface Timing
3-wire (QS7785PF) timing
I
2
SCL hold time (I
SCL setup time (I
SDA hold time (I
SDA setup time (I
SCL clock HIGH-level pulsewidth
(I
SCL clock LOW-level pulsewidth (I
SCL rise time (I
SCL fall time (I
C 2-wire (QS7785CF) timing
2
C)
STRB
SDA
SCL
SDA
SDA
SCL
Pin
Pin
SCL
STRB
SDA
SCL
I C address is {AD6 − AD0} = {1011011}
Parameter
2
2
2
C)
Data signal. Sets mode settings. See “Operating Modes.”
Clock signal. Data is read on the rising edge.
Strobe signal. Mode switches occur on the rising edge of this signal.
Data signal. Sets slave address and mode settings. Address value, {1011011}, is shown in the figure above. See “Operating Modes.”
Clock signal. Data is read on the rising edge.
2
2
C)
C)
2
C)
t
2
HD:STA
C)
C)
AD6
BYP
t
2
HIGH
C)
t
r
t
3
AD0
SUR
Symbol
t
t
t
t
SU:STO
HD:STA
HD:DAT
SU:DAT
t
t
HIGH
LOW
t
t
r
f
t
4
t
f
t
LOW
QS7785CF
QS7785CF
QS7785CF
QS7785CF
QS7785CF
QS7785CF
QS7785CF
QS7785CF
SP
t
SU:DAT
t
BYP
1
QS7785PF/CF
t
0
t
MONO
2
Condition
SUR
Description
Description
t
HD:DAT
SP
AC
MONO
BASS
AC
BASS
MUTE
min
250
4.0
4.0
5.0
4.0
4.7
–
–
NIPPON PRECISION CIRCUITS—7
MUTE
PSAVE
Rating
typ
PSAVE
–
–
–
–
–
–
–
–
t
5
t
6
1000
max
300
t
SU:STO
–
–
–
–
–
–
t
7
Unit
µs
µs
µs
ns
µs
µs
ns
ns