BU7858KN_07 Datasheet, PDF (15/25 Pages) Rohm – Mixer & Selector With 16bit D/A Converters

・Timing Diagram
（Repeated）
START
conditions
BIT 7
BIT 6
tSU;STA tLOW tHIGH 1/fSCLK
Acknowledge ^STOP
condition
SCL
SIO
t BUF t HD;STA
tSU;DAT t HD;DAT
Fig.35 I²C Timing Diagram
DVDD_IO=1.62～3.3V、Ta=-30～+85℃
Item
Symbol Min
Typ
Hold Time at Start Condition
t_HD;STA
0.6
－
SCLK “H” Level Time
t_HIGH
0.6
－
SCLK “L” Level Time
t_LOW
1.3
－
Set-up Time for Repeated Start Condition t_SU;STA
0.6
－
Data Hold Time
t_HD;DAT
0
－
Data Set-up Time
t_SU;DAT
100
－
Set-up Time for Stop Condition
t_SU;STO
0.6
－
Bus Release Time between Stop
Condition and Start Condition
t_BUF
1.3
－
tSU;STO
Max
Unit
－
μsec
－
μsec
－
μsec
－
μsec
0.9
μsec
－
nsec
－
μsec
－
μsec
Conditions
● PIN FUNCTION
【BU7858KN】
No. Pin Name I/O
Pin Function
Power
1
SDTI
I Audio DAC Serial Data Input
DVDD
2
LRCLK
I Audio DAC LR Clock
DVDD
3
BCLK
I Audio DAC BIT Clock
DVDD
4
DVDD
- Digital Power Supply
－
5
DVSS
- Digital Ground
DVDD
6
SCLK
I Serial Clock for CPU Interface
DVDD
7
SDATA
I Serial Data for CPU Interface
DVDD
8
NCS
I Serial Chip Selection for CPU Interface
DVDD
9
NRST
I Reset Input L: Reset
DVDD
10 CSTEP - Capacitor Connection Terminal for Pop Noise Reduction AVDD
11 CSTART
Capacitor Connection Terminal for Pop Noise Reduction
-
at Start-up
AVDD
12 CVCOM
Capacitor Connection Terminal for Internal Reference
-
Voltage Output
AVDD
13
HP_R
O Headphone Amplifier Output R-ch
AVDD
14 CA_R
Low-band Correction Capacitor for Headphone Amplifier
-
R-ch
AVDD
Equivalent
Circuit
Diagram
A
A
A
－
－
A
A
A
A
C
G
G
H
C
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