MAXQ314 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAXQ314

Single-Phase Power-Measurement IC with I2C Interface

Maxim Integrated 

Single-Phase Power-Measurement

IC with I2C Interface

Data and Control Registers

All transactions consist of the master writing to or read-

ing from data, configuration, or control registers. Each

register has an 8-bit address. There are several catego-

ries of internal registers; read-only registers return mea-

surement values taken by the device. All the read/write

registers are calculation coefficients set by the master.

The only exceptions are the DSPCFG register, which

configures operating features of the device, and the

ADC_AZ register, which resets the internal ADC when it

is written to.

READ WORD

S ADDR:7 W A CMD:8 A SR ADDR:7 R A D0:8 A D1:8 N P

READ LONG

S ADDR:7 W A CMD:8 A SR ADDR:7 R A D0:8 A D1:8 A D2:8 N P

WRITE WORD

S ADDR:7 W A CMD:8 A D0:8 A D1:8 A P

READ WORD WITH PEC

S ADDR:7 W A CMD:8 A SR ADDR:7 R A D0:8 A D1:8 A

PEC:8

NP

READ LONG WITH PEC

S ADDR:7 W A CMD:8 A SR ADDR:7 R A D0:8 A D1:8 A D2:8 A

PEC:8

NP

WRITE WORD WITH PEC

S ADDR:7 W A CMD:8 A D0:8 A D1:8 A

PEC:8

AP

A = ACKNOWLEDGE (ACK) BIT

ADDR:7 = 7-BIT DEVICE ADDRESS; MUST MATCH THE ADDRESS SELECTED BY A[2:0]

CMD:8 = REGISTER/COMMAND SELECTED IN TABLE 2

D0:8 = 8-BIT DATA; MULTIBYTE COMMANDS CAN REQUIRE D0, D1, D2, ETC.

PEC:8 = 8-BIT PEC DATA

N = NEGATIVE ACKNOWLEDGE (NACK) BIT

P = STOP BIT

S = START BIT

SR = REPEATED START BIT

W = WRITE BIT

______________________________________________________________________________________   11

Share Link: