参数资料
型号: TWL1103GQER
厂商: Texas Instruments
文件页数: 16/30页
文件大小: 0K
描述: VOICE BAND AUDIO PROC 80-BGA
标准包装: 1
系列: VBAP™
类型: 音频处理器
应用: 移动电话
安装类型: 表面贴装
封装/外壳: 80-VFBGA
供应商设备封装: 80-BGA MICROSTAR JUNIOR(5x5)
包装: 标准包装
其它名称: 296-11095-6
TWL1103
VOICE-BAND AUDIO PROCESSOR (VBAP
)
SLWS108A – JULY 2000 – JANUARY 2001
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 into 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 7. 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 one of two earphone amplifiers: one with differential output (EAR1ON and
EAR1OP) capable of driving a 16-
load or one with single-ended output (EAR2O) capable of driving a 32-
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: eight bits are received, the most significant (MSB) first.
D Linear mode: 15 bits are received, MSB first.
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