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參數(shù)資料
| 型號： | TAS5076PFCR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封裝： | GREEN, PLASTIC, TQFP-80 |
| 文件頁數(shù)： | 38/64頁 |
| 文件大?。?/td> | 873K |
| 代理商： | TAS5076PFCR |
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System Procedures for Initialization, Changing Data Rates, and Switching Between Master and Slave Modes
37
SLES090A—November 2003—Revised January 2004
TAS5076
MCLK
MUTE
Terminal
ERR_RCVRY
Terminal
Change from a 96-kHz data rate
MCLK_IN = 24.576 MHz
Clock unstable during transition.
HIGH and LOW intervals < 20 ns
Change to a 48-kHz data rate
MCLK_IN = 12.288 MHz
Volume Ramp
Up 120 ms
Volume Ramp
Down 60 ms
ERR_RCVRY can be set at
any time within this interval
Wait a minimum of 100
s after the
LOW to HIGH transition of RESET
Release ERR_RCVRY and
then MUTE when I2C
registers are programmed
> 5 ms
RESET
Terminal
< 2 ms
Set data rate and
restore other
register settings
via I2C
Figure 46. Changing the Data Sample Rate With an Unstable MCLK_IN Using the I2C
4.3
Changing Between Master and Slave Modes
The M_S terminal is set while the RESET terminal is active. Because this sequence employs the RESET
terminal the internal register settings are set to the default values.
Figure 47 shows the procedure to switch between master and slave modes and then restore the register
settings. In this example, the ERR_RCVRY terminal is used to hold off system re-initialization after RESET
is released. This permits the system controller to have as much additional time as necessary to restore the
register settings.
Once the data rate is set, the ERR_RCVRY and MUTE terminal signals are set high and the system
re-initializes.
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