MAS9090B Micro Analog Systems, MAS9090B Datasheet - Page 23

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

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0
1
0
1
0
0
0
0
1
1
1
1
state at power on initialization
0
1
0
1
0
0
1
1
0
0
1
1
msb
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
0
1
1
X
X
0
1
0
0
1
1
0
1
0
1
0
1
0
1
0
0
1
1
0
1
0
1
0
1
0
1
Normal operation
Set power-on-reset initialization
Normal operation
Scan. CI is input, DX is output. For device
testing.
Normal operation
Bypass TX highpass filter
Normal operation
Read 2-bit input to the decimator. For device
testing (CI and DR)
Normal operation
Loop from expander to compressor
Normal operation
Loop from TX to Rx
Standard frequency tone range
Halved frequency tone range
Double frequency tone range
Forbidden
Buzzer Output disabled (set to 0)
Buzzer output enabled
Duty cycle is relative to width of logic 1 *
Duty cycle is relative to width of logic 0
Duty cycle control word
rxtest pin
VSA
Anti-image filter
DAC output
RX pos. reference
RX neg. reference
RX agnd
NC
NC
TX (configured for test by MUX)
Power-on reset
Input of TX bandpass filter
Sign bit of DIGSDM
512 kHz clock (phi1)
internal frame sync
Output of RX gain3
Normal operation
Connect selected test outputs to TX output
Normal operation
Enable TX output continuously
Txtest pin
VSA
Gain amplifier
VSA
Anti-image filter
VSA
VSA
VSA
NC
March 20, 1998
DA9090B.002
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