Datasheet

HP/
(SE/ )
SPKR
BTL
VALID
PWM_A(L+)
PWM_C(R+)
PWM_B(L–)
PWM_D(R–)
I C:SCL
SDA
2
HPSD
FAULT(A0/ )
PDN
HPL/R
t
(mute)
t
(mute)
Mute
Exit
ACSD
Enter
ACSD
HP
Config
Enable
FAULT
Disable
FAULT
Unmute
Spkr
Config
Enter
ACSD
50%
Mute
Exit
ACSD
SpkrL–/R–
SpkrL+/R+
Unmute
(ifnotdonein
SpkrConfig)
SpkrL+/R+
SpkrL–/R–
50%
Hi-Z(Ext.Pulldown)
t
(enterSD)
t
(exitSDHPamp)
t
(enterSDHPamp)
t
(exitSDHP)
t
(exitSD)
=1OutputFAULT
T0452-01
TAS5715
www.ti.com SLOS645 –AUGUST 2010
Headphone Usage
Headphone/Speaker Configuration
PARAMETE
DESCRIPTION MIN TYP MAX UNIT
R
t
(mute)
Mute volume ramp wait time (t
(volramp)
given by register 0x0E <2:0>) 5 + 1.3 × t
(volramp)
ms
Exit shutdown wait time before issuing further commands to device (t
(start)
t
(exitSD)
1 + 1.3 × t
(start)
ms
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)
ms
given by regioster 0x1A<4:0>)
Exit shutdown wait time before enabling external headphone amp (t
(HPchg)
t
(exitSDHP)
1 + 1.3 × t
(HPchg)
ms
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)
ms
register 0x1C<7:4>)
Headphone amp enter shutdown wait time before entering ACSD (t
(HPamp)
t
(enterSDHPamp)
1 + 1.3 × t
(HPamp)
ms
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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