CXA1315 Sony Corporation, CXA1315 Datasheet - Page 7

• Manufacturer Part Number: CXA1315
• Description: 8-bit D/A Converter Supporting with I2C Bus
• Manufacturer: Sony Corporation

<Registers> In brackets ( ) number of bits
REF
SW0 to 3
DAC0 to 4
PONRES
ST0 to 3
I
There are 2 signals in I
SDA is double-way.
• As SDA is bidirectional it has 3 state outputs, H, L and Hi-Z.
• I
2
C Bus Signal
2
C transfer begins with Start Condition and ends with Stop Condition.
SDA
SCL
H
(1) : Switches D/A converter reference voltage
(1) : Selects ON/OFF of Pins 1, 2, 9 and 10
(8) : Digital data input register of D/A converter
(1) : Detects POWER ON RESET
(1) : Detects and registers the voltage condition of Pins 1, 2, 9 and 10
Start Condition S
0:
1:
0:
1:
0:
255: Output voItage turns to maximum
0:
1:
0:
1:
Note) SW0 to 3 effective during "0"
L
Standardizes the inner regulator
Standardizes voltage resistance divided from Vcc
(Each pin is the open collector output of NPN transistor)
OFF
ON
Output voltage turns to minimum
Master passes from the bus and is reset to "0" after having read this status
Sets to "1" when power supply is turned on or when there has been a power dip
1.5V and below
3.0V and above
2
Hi-Z
C bus. SDA (Serial Data) and SCL (Serial Clock).
L
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Stop Condition P
CXA1315M/P