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| 型号： | TAS5709APHPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48 |
| 封装： | 7 X 7 MM, GREEN, PLASTIC, HTQFP-48 |
| 文件页数： | 35/60页 |
| 文件大小： | 1210K |
| 代理商： | TAS5709APHPR |
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ERROR STATUS REGISTER (0x02)
SYSTEM CONTROL REGISTER 1 (0x03)
SLOS599A – NOVEMBER 2008 – REVISED SEPTEMBER 2009 ..................................................................................................................................... www.ti.com
The error bits are sticky and are not cleared by the hardware. This means that the software must clear the
register (write zeroes) and then read them to determine if they are persistent errors.
Error Definitions:
MCLK Error : MCLK frequency is changing. The number of MCLKs per LRCLK is changing.
SCLK Error: The number of SCLKs per LRCLK is changing.
LRCLK Error: LRCLK frequency is changing.
Frame Slip: LRCLK phase is drifting with respect to internal Frame Sync.
Table 5. Error Status Register (0x02)
D7
D6
D5
D4
D3
D2
D1
D0
FUNCTION
1
-
–
MCLK error
–
1
–
PLL autolock error
–
1
–
SCLK error
–
1
–
LRCLK error
–
1
–
Frame slip
–
1
–
Over current, Over Temperature, Over voltage or Under voltage errors.
–
1
Overtemperature warning (sets around 145°)
0
No errors (1)
(1)
Default values are in bold.
The system control register 1 has several functions:
Bit D7:
If 0, the dc-blocking filter for each channel is disabled.
If 1, the dc-blocking filter (–3 dB cutoff <1 Hz) for each channel is enabled (default).
Bit D5:
If 0, use soft unmute on recovery from clock error. This is a slow recovery. Unmute takes same
time as volume ramp defined in reg 0X0E.
If 1, use hard unmute on recovery from clock error (default). This is a fast recovery, a single step
volume ramp
Bits D1–D0: Select de-emphasis
Table 6. System Control Register 1 (0x03)
D7
D6
D5
D4
D3
D2
D1
D0
FUNCTION
0
–
PWM high-pass (dc blocking) disabled
1
–
PWM high-pass (dc blocking) enabled (1)
–
0
–
Reserved (1)
–
0
–
Soft unmute on recovery from clock error
–
1
–
Hard unmute on recovery from clock error (1)
–
0
–
Reserved (1)
–
0
–
Reserved (1)
–
0
–
Reserved(1)
–
0
No de-emphasis (1)
–
0
1
Reserved
–
1
0
De-emphasis for fS = 44.1 kHz
–
1
De-emphasis for fS = 48 kHz
(1)
Default values are in bold.
40
Copyright 2008–2009, Texas Instruments Incorporated
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| TAS5709PHPR | 功能描述:音频放大器 20W Stereo I2S input Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TAS5709PHPRG4 | 功能描述:音频放大器 20W Stereo I2S input Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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