SC900841JVK Freescale Semiconductor, SC900841JVK Datasheet - Page 143

• Manufacturer Part Number: SC900841JVK
• Description: IC POWER MGT 338-MAPBGA
• Manufacturer: Freescale Semiconductor

Specifications of SC900841JVK

• Applications: PC's, PDA's
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 338-TBGA
• Input Voltage: 2.8 V to 4.4 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Voltage - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

transmitting to the digital bus interface, the volume of the
converted signal can be controlled with a fine gain setting
through LAMPVL[5:0].
MC2IN inputs. The digital microphone is supplied from the
microphone bias and clocked through the microphone
clocking output, MCCLK. The resulting Pulse Density
Modulated signal from the digital microphone is directly
routed to the filter section of the ADC.
should be connected to MC2IN, and PCM1 voice mode
should be used in order to get the same data in the left and
right channels. If PCM2 stereo mode is used, the digital
microphone on the MC2IN signal is sent on the right channel
of PCM1 data only. Voice mode is not supported for the
digital microphone connected to the MC1IN pin.
application, PCM2 stereo mode must be used. In dual digital
microphone mode, DMIC1 (MC1IN) data and DMIC2
(MC2IN) data is sent to the left and right channels of PCM2,
respectively.
bit, and its frequency is selectable between 1.0 MHz and
Table 89. Transmit Gain Control
Table 88. Transmit Amplifiers Performance Specifications
Analog Integrated Circuit Device Data
Freescale Semiconductor
Gain and Volume Setting for Bits
Gain Accuracy
Amplifier Bias Current
Crosstalk Between Inputs
PSRR
THD
Input Noise
Digital microphones can be connected to the MC1IN and
If a single digital microphone is used in the application, it
If two digital microphones (dual dmics) are used in the
The MCCLK signal is enabled by setting the DMICCLKEN
RAMPVL[5:0], LAMPVL[5:0]
111001 (default)
Parameter
000000
000001
111110
111111
…
…
Gain and Volume
Relative to BP, 217 Hz
MC1IN, 1.02 kHz, 10 mVrms
Referred to REFA
DMICVOL[5:0]
Setting
111111
111110
000110
000001
000000
…
…
Condition
Gain
-57
-56
+5
+6
…
…
0
Units
2.0 MHz by setting the DMICCLK[0] bit. The exact clock
frequency will vary as a function of the ADC sample rate. The
MC2IN input is configured for digital microphone use by
setting the MUXIN bit. Both the clock and the data stream are
referenced with respect to MC2B. The gain of the digital
microphone data to the digital serial interface can be
controlled with the DMICVOL[5:0] bits. The signal from the
digital microphone can be routed into the receive voice DAC
path as a side tone, by clearing the DMICMUTFB bit, and its
gain can be controlled with the DMICVLFB[5:0] bits. The
digital mic data to the digital serial interface can be muted
with the DMICMUT bit and the digital mic data to the voice
DAC can be muted with the DMICMUTEFB bit.
selectable between the digital mic, and the right channel ADC
by the PCM1RCH bit. Similarly, the data routed to the PCM2
digital serial interface is selectable between the digital mic
and the left channel ADC, by the PCM2LCH bit, and is
selectable between the digital mic and the right channel ADC
by the PCM2RCH bit
dB
dB
dB
dB
dB
…
…
The data routed to the PCM1 digital serial interface is
* These gain settings are obtained by a combination of the
0/+12 dB, 0/+8/+18 dB and -8/0/+8/+16 dB. The 0 dB to
+7.0 dB settings in the ADC are not used
Gain and Volume Setting for Bits
Minimum
MIC1PRE[1:0], MIC2PRE[1:0] *
-0.5
90
00
01
10
11
Typical
200
FUNCTIONAL DEVICE OPERATION
Maximum
+0.5
-60
-60
1.5
Mic / RXin
20 / 18
28 / 26
12 / 8
Gain
0 / 0
μ Vrmsp
Units
dB
μ A
dB
dB
dB
AUDIO
Units
900841
dB
dB
dB
dB
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