參數(shù)資料
型號(hào): TAS5715PHP
廠(chǎng)商: TEXAS INSTRUMENTS INC
元件分類(lèi): 音頻/視頻放大
英文描述: 41.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48
封裝: 7 X 7 MM, GREEN, PLASTIC, HTQFP-48
文件頁(yè)數(shù): 39/74頁(yè)
文件大小: 2771K
代理商: TAS5715PHP
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
t
(PDN-HPSD)
Enable
FAULT
HPL/R
t
(exitSDHPamp)
T0453-01
t
(exitSDHP)
t
(HPamp)
=1Output
FAULT
Hi-Z(Ext.Pulldown)
SLOS645 – AUGUST 2010
www.ti.com
Headphone Configuration
Registers 0x07–0x0B
Master/channel headphone volume
Register 0x19
SDG = 0x30 or 0x00 (PWM3/4 in SDG)
Registers 0x11–0x12
ICD1/2 = {0xAC, 0x54}
Register 0x1A<7>
Clear bit for headphone mode (HP/SPKR = 0)
Register 0x1A<4:0>
Set to 0 0000 for 0-ms start/stop period
Register 0x20<23>
Clear bit for Ch1 AD mode
Register 0x20<19>
Clear bit for Ch2 AD mode
Register 0x46<1:0>
Clear both bits to disable DRC1 and DRC2
Register 0x50<7>
Set bit to disable EQ
Headphone Mode Power Down
PARAMETE
DESCRIPTION
MIN
TYP
MAX
UNIT
R
t(PDN-HPSD)
Delay from power-down event to headphone amplifier shutdown assertion
2
ms
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
1 + 1.3 ×
t(exitSDHPamp)
ms
register 0x1C<7:4>)
t(HPamp)
Headphone amp enable/disable wait time (given by register 0x1C<7:4>)
t(HPamp)
ms
Figure 58. Headphone Control Power Down
44
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TAS5715
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