CXA1875 SONY [Sony Corporation], CXA1875 Datasheet - Page 7

• Manufacturer Part Number: CXA1875
• Description: 8-bit D/A Converter Compatible with I2C Bus
• Manufacturer: SONY [Sony Corporation]

<Registers>
I
There are 2 signals in I
SDA is double-way.
• As SDA is double-way it has 3 state outputs, H, L and HIZ.
• I
2
C Bus Signal
REF
SW0 to 3 (1):
DAC0 to 4 (8):
PONRES (1):
ST0 to 3
2
C transfer begins with Start Condition and ends with Stop Condition.
SDA
SCL
Start Condition S
(1):
(1):
In brackets ( ) number of bits
H
Switches D/A converter reference voltage
0:Standardizes the inner regulator
1:Standardizes voltage resistance divided from V
Selects ON/OFF of Pins 1, 2, 9 and 10
(Each pin is the open collector output of NPN transistor)
0:OFF
1:ON
Digital data input register of D/A converter
0:Output voltage turns to minimum
255:Output voltage turns to maximum
Detects POWER ON RESET
0:Master passes from the bus and is reset to 0 after having read this status
1:Set to 1 when power supply is turned on or when there has been a power dip
Detects and registers the voltage condition of Pins 1, 2, 9 and 10
0:1.5 V and below
1:3.0 V and above
Note) SW0 to 3 effective during 0
2
C bus. SDA (Serial DAta) and SCL (Serial Clock).
L
HIZ
L
—7—
CC
Stop Condition P
CXA1875AP/AM