參數(shù)資料
型號: TAS5719PHP
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻/視頻放大
英文描述: 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48
封裝: 7 X 7 MM, GREEN, PLASTIC, HTQFP-48
文件頁數(shù): 33/67頁
文件大?。?/td> 1043K
代理商: TAS5719PHP
SLOS655A
– NOVEMBER 2010 – REVISED FEBRUARY 2011
ERROR STATUS REGISTER (0x02)
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 6. 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
Clip indicator
1
Overcurrent, overtemperature, overvoltage, or undervoltage error
0
Reserved
0
No errors (1)
(1)
Default values are in bold.
SYSTEM CONTROL REGISTER 1 (0x03)
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.
Bit D5:
If 0, use soft unmute on recovery from a clock error. This is a slow recovery. Unmute takes the
same time as the volume ramp defined in register 0x0E.
If 1, use hard unmute on recovery from clock error. This is a fast recovery, a single-step volume
ramp.
Bits D1
–D0: Select de-emphasis
Table 7. 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)
1
Hard unmute on recovery from clock error
1
Reserved(1)
0
Reserved(1)
0
Reserved(1)
0
No de-emphasis(1)
0
1
De-emphasis for fS = 32 kHz
1
0
De-emphasis for fS = 44.1 kHz
1
De-emphasis for fS = 48 kHz
(1)
Default values are in bold.
2010–2011, Texas Instruments Incorporated
39
Product Folder Link(s): TAS5717 TAS5719
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