TAS5715 datasheet(43/74 Pages) TI

43 / 74 page

HP/

(SE/

)

SPKR

BTL

VALID

PWM_A(L+)

PWM_C(R+)

PWM_B(L–)

PWM_D(R–)

I C:SCL

SDA

HPSD

FAULT

(A0/

)

PDN

HPL/R

(mute)

Mute

Exit

ACSD

Enter

ACSD

Config

Enable

FAULT

Disable

FAULT

Unmute

Spkr

Config

Enter

ACSD

50%

Mute

Exit

ACSD

SpkrL–/R–

SpkrL+/R+

Unmute

(ifnotdonein

SpkrConfig)

SpkrL+/R+

SpkrL–/R–

50%

Hi-Z(Ext.Pulldown)

(enterSD)

(exitSDHPamp)

(enterSDHPamp)

(exitSDHP)

(exitSD)

=1Output

FAULT

T0452-01

TAS5715

www.ti.com

SLOS645 – AUGUST 2010

Headphone Usage

Headphone/Speaker Configuration

PARAMETE

DESCRIPTION

MIN

TYP

MAX

UNIT

t(mute)

Mute volume ramp wait time (t(volramp) given by register 0x0E <2:0>)

5 + 1.3 × t(volramp)

Exit shutdown wait time before issuing further commands to device (t(start)

t(exitSD)

1 + 1.3 × t(start)

given by regioster 0x1A<4:0>)

Enter shutdown wait time before issuing further commands to device (t(stop)

t(enterSD)

1 + 1.3 × t(stop)

given by regioster 0x1A<4:0>)

Exit shutdown wait time before enabling external headphone amp (t(HPchg)

t(exitSDHP)

1 + 1.3 × t(HPchg)

given by register 0x1A<6:5>)

Headphone amp exit shutdown wait time before unmuting (t(HPamp) given by

t(exitSDHPamp)

1 + 1.3 × t(HPamp)

Headphone amp enter shutdown wait time before entering ACSD (t(HPamp)

t(enterSDHPamp)

1 + 1.3 × t(HPamp)

given by register 0x1C<7:4>)

Figure 57. Headphone Control Use Model

Speaker Configuration

• Registers 0x07–0x0B

Master/channel speaker volume

• Register 0x19

SDG = 0x30 or 0x00 (no channels in SDG)

• Registers 0x11–0x12

ICD1/2 = {0xB8, 0x60}

• Register 0x1A<7>

Clear bit for speaker mode (HP/SPKR = 0)

• Register 0x1A<4:0>

Set to 0 1000 for 16.5-ms start/stop period

• Register 0x20<23>

Set bit for Ch1 BD mode

• Register 0x20<19>

Set bit for Ch2 BD mode

• Register 0x46<1:0>

Set both bits to enable DRC1 and DRC2

• Register 0x50<7>

Clear bit to enable EQ

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