Cirrus Logic CRD4297-1 AMR Product Data Book page 7

CRD4297-1 AMR
CrystalClear™ AC '97 AMR Audio Modem Riser Reference
AUDIO PERFORMANCE EVALUATION
Signal Name
Line In
Mic In
Line Out
Speaker Out (8Ω)
In the above reference designators, the letters in pa-
renthesis designate the full-scale value for that par-
ticular I/O. These are used in the tables below to
Microphones Supported
3-Pin Phantom Power (power on ring)
2-Pin Dynamic
2-Pin Phantom Power (power on tip)
Full Duplex (A-D-PC-D-A):
Line In to Line Out
Dynamic Range
THD+N
Frequency Response
NOTE: TM004: combined test used in lieu of TM002 and TM003
Analog Mixer (A-A):
Line In to Line Out
Dynamic Range
THD+N
Frequency Response
Crosstalk
Analog Mixer (A-A):
Mic In to Line Out
Dynamic Range
THD+N
Frequency Response
NOTE: Mic In is Mono
Plots
In the following plots, stereo measurements have
two sets of data per plot and two vertical axes.
Above each vertical axis is a label indicating a
channel that relates to that axis. The data set ex-
tends beyond the vertical axis to indicate its associ-
ation with that axis. Using Figure X as an example,
DS242RD1B1
Connector
Jack
Jack
Jack
N/A
Support
Yes
Yes
Reference
-3 dB FS (li)
Ac = -0.25 dB
Reference
-3 dB FS (li)
Ac = -0.1 dB
f = 10 kHz
Reference
Gain = 0 dB
-3 dB FS (mi)
Ac = -3 dB
CIRRUS LOGIC ADVANCED PRODUCT DATABOOK
Maximum Voltage
2.341 V
RMS
0.146 V
RMS
1.058 V
RMS
N/A
help clarify which full-scale value applies to the
particular measurement. Values referenced to dig-
ital numbers on the PC are listed with the (d) suffix.
Left Right
83.8 83.8
-81.1 -80.5
20-20k 31-20k
Left Right
95.4 95.3
-91.2 -90.6
20-20k 20-20k
-66.7 N/A
Left Right
93.9 N/A
-85.9 N/A
58-15.5k N/A
the top set of data extends beyond the right vertical
axis, which is labeled at the top "RIGHT', indicat-
ing that the top set of data is the right channel and
associated with the right vertical axis. Likewise,
the bottom set of data extendds beyond the left ver-
tical axis which is labeled at the top "LEFT", indi-
cating that the bottom set of data is the left channel
and associated with the left vertical axis.
Reference Imp. (kΩ)
Designator
0 dB FS (li)
0 dB FS (mi)
0 dB FS (lo)
0 dB FS(so)
Comments
Units Figures
dB FS A (lo) 97 - 1NXL
dB FS (lo) 97 - 1DXL
Hz 97 - 1MXL
Units Figures
dB FS A (lo) 97 - 1NAL
dB FS (lo) 97 - 1DAL
Hz 97 - 1MAL
dB FS (lo) 97 - 1CAL
Units Figures
dB FS A (lo) 97 - 1NAM
dB FS (lo) 97 - 1DAM
Hz 97 - 1MAM
N/A
N/A
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