WM8994ECSSLASHR datasheet(224/363 Pages) CIRRUS

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WM8994

224

Rev 4.6

WSEQ

INDEX

ADDRESS

WIDTH

START

DATA

DELAY

EOS

DESCRIPTION

12 (0Ch)

R96 (0060h)

5 bits

Bit 1

11h

HPOUT1R_DLY = 1

HPOUT1L_DLY = 1

(delay = 0.5625ms)

13 (0Dh)

R84 (0054h)

2 bits

Bit 0

03h

DCS_ENA_CHAN_0 = 1

DCS_ENA_CHAN_1 = 1

(delay = 0.5625ms)

14 (0Eh)

R255 (00FFh)

1 bits

Bit 0

00h

Dummy Write for expansion

(delay = 0.5625ms)

15 (0Fh)

R96 (0060h)

6 bits

Bit 2

3Bh

HPOUT1R_OUTP = 1

HPOUT1R_RMV_SHORT =1

HPOUT1_DLY = 1

HPOUT1L_OUTP = 1

HPOUT1L_RMV_SHORT = 1

(delay = 0.5625ms)

Table 124 Headphone Warm Start-Up Default Sequence

Speaker Start-Up

The Speaker Start-Up sequence can be initiated by writing 8110h to Register 272 (0110h). This single

operation starts the Control Write Sequencer at Index Address 16 (10h) and executes the sequence

defined in Table 125.

This sequence takes approximately 34ms to run.

WSEQ

INDEX

ADDRESS

WIDTH

START

DATA

DELAY

EOS

DESCRIPTION

16 (10h)

R57 (39h)

5 bits

Bit 2

1Bh

STARTUP_BIAS_ENA = 1

VMID_BUF_ENA = 1

VMID_RAMP[1:0] = 11b

(delay = 0.5625ms)

17 (11h)

R1 (01h)

3 bits

Bit 0

03h

BIAS_ENA = 1

VMID_SEL[1:0] = 01b

(delay = 32.5ms)

18 (12h)

R1 (01h)

2 bits

Bit 12

03h

SPKOUTL_ENA = 1

SPKOUTR_ENA = 1

(delay = 0.5625ms)

Table 125 Speaker Start-Up Default Sequence

Earpiece Start-Up

The Earpiece Start-Up sequence can be initiated by writing 8113h to Register 272 (0110h). This single

operation starts the Control Write Sequencer at Index Address 19 (13h) and executes the sequence

defined in Table 126.

This sequence takes approximately 259ms to run.

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