CXA1875AP 查看數據表（PDF） - Sony Semiconductor

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CXA1875AP

8-bit D/A Converter Compatible with I2C Bus

Sony Semiconductor 

CXA1875AP/AM

Definition of I2C Register

<Slave address>

MSB

LSB

0

1

0

0 SAD2 SAD1 SAD0 R/W

0: SLAVE RECEIVER

R/W 1: SLAVE TRANSMITTER

SAD 0 to 2: 11 to 13 pin

0: "LOW"

1: "HIGH"

<Register table>

• With the IC reset all registers are reset to 0

• ∗: Not defined

• ×: Don’t care

• Sub address is auto incremented

• It can be used as a 6-bit D/A converter by setting the lower two bits of DAC 0-4 registors to 0, but take care

that the max. voltage of DA output will lower about 100 mV compared with the use of 8 bits.

Control Register

Sub address

BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0

× × × × × 000

REF

∗

∗

∗

SW3 SW2 SW1 SW0

× × × × × 001

DAC0 (8)

× × × × × 010

DAC1 (8)

× × × × × 011

DAC2 (8)

× × × × × 100

DAC3 (8)

× × × × × 101

DAC4 (8)

Status Register

BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0

PONRES 0

0

0

ST3 ST2 ST1 ST0

—6—

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