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参数资料
| 型号： | MC13783VKR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 30/50页 |
| 文件大小： | 0K |
| 描述： | IC PWR MNGMNT ATLAS 3G 247MAPBGA |
| 标准包装： | 1,500 |
| 应用： | 手持/移动设备 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 247-TFBGA |
| 供应商设备封装： | 247-MAPBGA（10x10） |
| 包装： | 带卷 (TR) |
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Functional Description
Table 15. Stereo DAC Sample Rate Selection SPI Bits (continued)
SR3
1
1
1
SR2
0
0
0
SR1
0
0
1
SR0
0
1
0
FS
48000
64000
96000
N FS
128
64
64
MCL
6144k
4096k
6144k
N B
4
2
2
BCL
1536k
2048k
3072k
1011 to 1111 are reserved combinations
4.3.4
4.3.4.1
Audio Input Section
Microphone Bias
Two microphone bias circuits are provided. One circuit supplies up to two handset microphones via the
two outputs MC1RB and MC1LB. The second circuit supplies the headset microphone via MC2B. The
microphone bias resistors of 2.2 kOhm are included. The bias circuits can be enabled and disabled.
The bias MC2B includes a microphone detect circuit which monitors the current flow through the output
both when the bias is disabled or enabled. This will generate an interrupt to the processor. In this way the
attach and removal of a headset microphone is detected. Also it allows to include a send/end series switch
with the microphone for signaling purposes. When the output of the MC2B gets out of regulation, an
interrupt is generated. This allows for connecting a switch in parallel to the microphone.
Table 16. MC1RB, MC1LB and MC2B Parametric Specifications
Parameter
Microphone Bias Internal Voltage
Output Current
PSRR
Condition
MC1RB, MC1LB IL = 0
MC2B
Source only
with respect to BP
Min
2.23
2.00
0
90
Typ
2.38
2.10
—
—
Max
2.53
2.20
500
—
Units
V
μA
dB
20 Hz - 10 kHz
Output Noise
Includes REFA noise
—
1.5
3.0
μVrms
CCITT psophometricly weighted
4.3.4.2
Microphone Amplifiers
Figure 8 on page 31 shows a block diagram of the microphone amplifier section. A selection can be made
between one of the three amplified inputs: the handset microphone connected to MC1RIN, the headset
microphone connected to MC2IN, and the line input TXIN. The selected channel can be fed into the
receive channel for test purposes. In addition a second amplified input channel can be selected for the
second handset microphone connected to MC1LIN. The gain towards to voice CODEC can be
programmed in 1 dB steps from –8 dB to +23 dB.
In addition to the microphone amplifier paths, there is also the possibility to route the stereo line in signal
from RXINR and RXINL to the voice CODEC dual ADC section. This allows for 13-bit, 16 kHz sampled
stereo recording of an analog source such as FM radio.
MC13783 Technical Data, Rev. 3.5
30
Freescale Semiconductor
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