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參數資料
| 型號： | TPA2051D3YFFT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA25 |
| 封裝： | 2.16 X 2.11 MM, 0.40 MM PITCH, GREEN, WCSP-25 |
| 文件頁數： | 9/34頁 |
| 文件大?。?/td> | 1594K |
| 代理商： | TPA2051D3YFFT |
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www.ti.com ..................................................................................................................................................... SLOS641A – JUNE 2009 – REVISED OCTOBER 2009
Version[3:0]
Read-only bits that indicate the silicon revision.
Spk_Fault
Logic high indicates an output over-current event has occurred on the Class-D channel output.
This bit is clear-on-write.
Thermal
Logic high indicates thermal shutdown activated. Bit automatically clears when the thermal
condition lowers past the hysteresis threshold.
Reserved
These bits are reserved for future enhancements. If read these bits may assume any value.
Amplifier Control Register (Address: 1)
BIT
7
6
5
4
3
2
1
0
Function
LIM_SEL
LIM_EN
Reserved
SWS
HPL_Enable
HPR_Enable
Spk_Enable
VM_Bypass
Reset Value
1
0
1
LIM_SEL
Selects which limiter register value is used. Set to logic high for LIMSPK[2:0]. Set to logic low
for LIMHP[2:0]. Default is 1 (speaker limiter selected).
LIM_EN
AGC limiter function enable. Set to logic high to enable the limiter function.
SWS
Software Shutdown Mode. Set to logic high to deactivate the amplifier.
HPL_Enable
Headphone left channel enable. Set to logic low to deactivate left channel.
HPR_Enable
Headphone right channel enable. Set to logic low to deactivate right channel.
Spk_Enable
Class-D power amplifier enable. Set to logic low to deactivate speaker Class-D power amplifier.
VM_Bypass
Speaker bypass mode. Set to logic low to deactivate speaker bypass. Setting VM_Bypass to 1
forces SPK_Enable to 0 and bypasses the volume control. The headphone amplifiers can still
be enabled/disabled and the volume control for inputs 1 and 2 are still active.
Reserved
These bits are reserved for future enhancements. If read these bits may assume any value.
Attack Time and Speaker Limiter Control Register (Address: 2)
BIT
7
6
5
4
3
2
1
0
Function
ATK_time[4]
ATK_time[3]
ATK_time[2]
ATK_time[1]
ATK_time[0]
LIMSPK[2]
LIMSPK[1]
LIMSPK[0]
Reset Value
0
1
0
1
0
1
ATK_time [4:0]
Five bit attack time (gain decrease) control for the AGC. 00000 sets to the lowest attack
time. Default setting on power up is 00100 (6.4 ms / step)
LIMSPK[2:0]
Three-bit limiter level control for the speaker amplifier. 000 sets to the lowest limiter level.
Default setting on power-up is 101 (4.2 Vpeak)
Release Time and Headphone Limiter Level Control Register (Address: 3)
BIT
7
6
5
4
3
2
1
0
Function
REL_time[4]
REL_time[3]
REL_time[2]
REL_time[1]
REL_time[0]
LIMHP[2]
LIMHP[1]
LIMHP[0]
Reset Value
0
1
0
1
0
1
REL _time [4:0]
Five bit release time (gain increase) control for the AGC. 00000 sets to the lowest release
time. Default setting on power up is 01010 (451 ms / step)
LIMHP [2:0]
Three-bit limiter level control for the headphone amplifier. 000 sets to the lowest limiter level.
Default setting on power-up is 111 (highest setting)
Mode / Mono Input Volume Control Register (Address: 4)
Copyright 2009, Texas Instruments Incorporated
17
Product Folder Link(s): TPA2051D3
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