MAS9090B Micro Analog Systems, MAS9090B Datasheet - Page 22

• Manufacturer Part Number: MAS9090B
• Description: Low Voltage 14-bit Linear Codec
• Manufacturer: Micro Analog Systems

(2)
msb
msb
X
*
0
0
0
0
0
0
0
0
1
1
0
0
1
-
values are calculated from TX output, levels on RX are 6 dB smaller
don’t care
state at power on initialization
X
X
0
0
0
0
1
1
1
1
0
0
1
-
X
X
0
0
1
1
0
0
1
1
0
0
1
-
0
1
0
1
0
1
0
1
0
1
0
1
1
-
0
0
1
1
0
1
0
1
0
0
1
-
0
1
0
0
1
-
0
1
0
0
1
-
0 dB gain *
-3 dB
-6 dB
-9 dB
-12 dB
-15 dB
-18 dB
-21 dB
-24 dB
-27 dB
f1 and f2 muted
f2 selected
f1 selected
f1 and f2 in summed mode
Squarewave signal selected
Sinewave signal selected
Normal operation
Tone/Ring generator connected to TX path
0
1
1
-
f1 control word
f2 control word
0 dB gain
-2 dB gain
in -2 dB steps
-30 dB gain
0 dB gain
-2 dB gain
in -2 dB steps
-30 dB gain
1.20 (2)
-25.80
-0.87 (2)
-27.87
-1.81 (2)
-28.81
March 20, 1998
DA9090B.002
*
*
*
*
*
22