CS5484 datasheet(23/67 Pages) CIRRUS

23 / 67 page

CS5484

DS981F3

After reset, all four energy pulse generation blocks are

disabled (DOxMODE[3:0] = Hi-Z). To output a desired

energy pulse to a DOx pin, it is necessary to follow the

steps below:

1. Write to register PulseWidth (page 0, address 8) to

select the energy pulse width and pulse frequency

range.

2. Write to register PulseRate (page 18, address 28) to

select the energy pulse rate.

3. Write to register PulseCtrl (page 0, address 9) to

select the input to each energy pulse generation

block.

4. Write ‘1’ to bit EPGx_ON of register Config1 (page 0,

address 1) to enable the desired energy pulse

generation blocks.

5. Wait at least 0.1 seconds.

6. Write bits DOxMODE[3:0] of register Config1 to

select DOx to output pulses from the appropriate

energy pulse generation block.

7. Send DSP instruction (0xD5) to begin continuous

conversion.

PSUM Sign

QSUM Sign

P1 Sign

P2 Sign

Q1 Sign

Q2 Sign

V1/V2 Crossing

I1/I2 Crossing

DO1_OD

(Config1)

DO2_OD

(Config1)

DO4_OD

(Config1)

(PulseCtrl) EPGxIN[3:0]

DOxMODE[3:0]

(Config1)

DO4

DO2

DO1

Hi-Z

Interrupt

PSUM

QSUM

SSUM

P1AVG

P2AVG

Q1AVG

Q2AVG

S1AVG

S2AVG

PULSE RATE

EPGx_ON

(Config1)

MCLK

(PulseWidth) PW[7:0]

(PulseWidth) FREQ_RNG[3:0]

0000

0001

0010

0011

0100

0101

0110

0111

1000

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

RESERVED

DO3_OD

(Config1)

DO3

Figure 14. Energy Pulse Generation and Digital Output Control

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