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| 型號(hào)： | TLV320AIC28RGZR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
| 封裝： | 7 X 7 MM, PLASTIC, QFN-48 |
| 文件頁(yè)數(shù)： | 57/85頁(yè) |
| 文件大小： | 1053K |
| 代理商： | TLV320AIC28RGZR |
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TLV320AIC28
SLAS418B FEBRUARY 2004 REVISED MAY 2005
www.ti.com
60
REGISTER 1FH: Gain Control for Cell Phone Input and Buzzer Input
BIT
NAME
RESET VALUE
READ/WRITE
FUNCTION
D15
MUT_CP
1
R/W
Cell phone Input PGA Powerdown
1 => Powerdown cell-phone input PGA
0 => Powerup cell phone input PGA
D14D8
CPGA
1000101
R/W
Cellphone Input PGA Settings.
0000000 => 34.5 dB
0000001 => 34 dB
0000010 => 33.5 dB
...
1000101 => 0 dB
1000110 => 0.5 dB
...
1011100 => 11.5 dB
1011101 => 12 dB
1011110 => 12 dB
1011111 => 12 dB
11xxxxx => 12 dB
Note: These bits are readonly when AGC is enabled for CP_IN (cell-phone input)
and reflect the gain applied by the AGC.
D7
CPGF
0
R
Cell phone Input PGA Flag (Read Only)
0 => Gain applied
≠ PGA register setting
1 => Gain applied = PGA register setting.
Note: This flag indicates when the softstepping for cell-phone input is completed.
When AGC is enabled for Cellphone input, this bit is readonly and acts as
Saturation Flag. The read value of this bit indicates the following
0 => AGC is not saturated
1 => AGC is saturated (PGA has reached –34.5 dB or max PGA applicable).
D6
MUT_BU
1
R/W
Buzzer Input PGA Powerdown
1 => Powerdown buzzer input PGA
0 => Powerup buzzer input PGA
D5D2
BPGA
1111
R/W
Buzzer Input PGA settings.
1111 => 0 dB
1110 => 3 dB
1101 => 6 dB
1100 => 9 dB
1011 => 12 dB
1010 => 15 dB
1001 => 18 dB
1000 => 21 dB
0111 => 24 dB
0110 => 27 dB
0101 => 30 dB
0100 => 33 dB
0011 => 36 dB
0010 => 39 dB
0001 => 42 dB
0000 => 45 dB
D1
BUGF
0
R
Buzzer PGA Flag (Read Only)
0 => Gain Applied
≠ PGA Register setting
1 => Gain Applied = PGA register setting.
Note: This flag indicates when the softstepping for buzzer input is completed.
D0
0
R
Reserved (Write only 0)
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