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參數資料
型號: TWL1110PBSR
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP32
封裝: PLASTIC, QFP-32
文件頁數: 16/40頁
文件大小: 564K
代理商: TWL1110PBSR
TWL1110
VOICE-BAND AUDIO PROCESSOR (VBAP
)
SLWS103 – NOVEMBER 2000
23
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
receive operation (continued)
receive volume control
The values in the volume control PGA control registers provide volume control for the earphone. Volume control
gain is set from 0 dB to –18 dB in 2-dB steps through the I2C interface. The default RX volume control gain is
0 dB.
Table 5. RX Volume Control
BIT NAME
RELATIVE GAIN
RV3
RV2
RV1
RV0
MIN
TYP
MAX
UNIT
0
– 0.2
0
0.2
dB
0
1
– 2.2
–2
–1.8
dB
0
1
0
– 4.2
–4
– 3.8
dB
0
1
– 6.2
–6
– 5.8
dB
0
1
0
– 8.2
–8
–7.8
dB
0
1
0
1
–10.2
–10
– 9.8
dB
0
1
0
–12.2
–12
–11.8
dB
0
1
–14.2
–14
–13.8
dB
1
0
–16.2
–16
–15.8
dB
1
0
1
–18.2
–18
–17.8
dB
earphone amplifier
The analog signal can be routed to either of two earphone amplifiers: one with a differential output (EAR1ON
and EAR1OP) capable of driving a 8-
load, or one with a single-ended output (EAR2O) capable of driving a
8-
load.
earphone mute function
Muting can be selected by setting bit 3 of the power control register through the I2C interface.
receive PCM data format
D Companded mode: 8 bits are received, the most significant (MSB) first.
D Linear mode: 15 bits are received, MSB first.
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相關代理商/技術參數
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