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): 36/67頁
文件大小: 1043K
代理商: TAS5719PHP
SLOS655A
– NOVEMBER 2010 – REVISED FEBRUARY 2011
SYSTEM CONTROL REGISTER 2 (0x05)
When bit D6 is set low, the system exits all-channel shutdown and starts playing audio; otherwise, the outputs
are shut down (hard mute).
Table 9. System Control Register 2 (0x05)
D7
D6
D5
D4
D3
D2
D1
D0
FUNCTION
0
Reserved(1)
0
Exit all-channel shutdown (normal operation)(2)
1
Enter all-channel shutdown (hard mute)(1)
0
-
Reserved (1)
1
Headphone Mode
0
Speaker Mode
1. In speaker mode, a value of 1 means device is in ternary modulation.
1
2. In headphone mode, a value of 1 means channel volume in headphone mode =
0x08/0x09 (same as speaker channel volume).
1. In speaker mode, a value of 0 means device is in not in ternary modulation (AD
or BD as defined in register 0x25).
0
2. In headphone mode, 0 means channel volume in headphone mode = 0x0C
(headphone volume register). (1)
0
Reserved (1)
0
A_SEL/HP_SD configured as input
A_SEL/HP_SD configured configured as output to use as external HP amplifier
1
shutdown signal
0
Internal power stage FAULT signal is the source of A_SEL/HP_SD pin
HPSDZ is the source of A_SEL/HP_SD pin (set this before switching to headphone
1
mode)
(1)
Default values are in bold.
(2)
When exiting all-channel shutdown, soft unmute is might not occur unless register 0x03, bit 5 is set to 1.
SOFT MUTE REGISTER (0x06)
Writing a 1 to any of the following bits sets the output of the respective channel to 50% duty cycle (soft mute).
Table 10. Soft Mute Register (0x06)
D7
D6
D5
D4
D3
D2
D1
D0
FUNCTION
0
Reserved(1)
1
Soft mute channel 3
0
Soft unmute channel 3(1)
1
Soft mute channel 2
0
Soft unmute channel 2(1)
1
Soft mute channel 1
0
Soft unmute channel 1(1)
(1)
Default values are in bold.
2010–2011, Texas Instruments Incorporated
41
Product Folder Link(s): TAS5717 TAS5719
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