CS5460

DS279PP5

17

3.1.7 Register Read/Write Command

This command informs the state machine that a register access is required. On reads the addressed register is

loaded into the output buffer and clocked out by SCLK. On writes the data is clocked into the input buffer and

W/R

Write/Read control

0 = Read register

1 = Write register

RA[4:0]

Register address bits. Binary encoded 0 to 31. All registers are 24 bits in length.

Address

Name

Description

00000

Config

Configuration Register

00001

Ioff

Current offset calibration

00010

Ign

Current gain calibration

00011

Voff

Voltage offset calibration

00100

Vgn

Voltage gain calibration

00101

Cycle Count

Number of conversions to integrate over (N)

00110

Pulse-Rate

Used to calibrate/scale the energy to frequency output

00111

I

Last current value

01000

V

Last voltage value

01001

P

Last Power value

01010

E

Total energy value of last cycle

01011

RMS current value of last cycle

01100

RMS voltage value of last cycle

01101

TBC

Timebase Calibration

01110

Test

Internal Use only †

01111

Status

Status register

10000

Res

Reserved

.

.

10111

Res

Reserved

11000

Test

Internal Use only †

11001

Test

Internal Use Only †

11010

Mask

Interrupt mask register

11011

Test

Internal Use Only †

11100

Res

Reserved

.

.

11111

Res

Reserved

† These Registers are for Internal Use only and should not be written to. Accessing these

registers will NOT generate an “Invalid Command” (IC) bit in the Status Register.

B7

B6

B5

B4

B3

B2

B1

B0

0W/R

RA4

RA3

RA2

RA1

RA0

0