MX802 Datasheet, PDF (21/24 Pages) List of Unclassifed Manufacturers – DVSR CODEC

DVSR CODEC
Static Values
Encoder/Decoder (Full Codec)
Passband
Passband Gain
Passband Ripple
Stopband
Stopband Attenuation
SINAD Level
Output Noise (Input Short Circuit)
Idle Channel Noise (Forced)
Xtal/Clock Frequency
21
Notes
Min.
Typ. Max.
MX802
Units
10, 11 300
3400
Hz
11
0
dB
11
-3.0
3.0
dB
6.0
10
kHz
50.0
dB
23.0
dB
-50
dBp
-55
dBp
6
4.0
MHz
Table 11: Operating Characteristics
Operating Characteristics Notes:
1. Does not include current drawn by any attached DRAM.
2. Serial Clock, Command Data, Chip Select, A1/DE1, and A2/DCK inputs
3. CAS, WE, and A0 to A9 inputs.
4. When the IRQ output is at V_DD.
5. The optimum range levels for a good Signal to Noise ratio.
6. Audio frequency response will vary with respect to Xtal/Clock frequency.
7. Reply Data output.
8. IRQ output.
9. RAS output.
10. Passband is reduced to (typically) 2700Hz when a sample rate of 25kbps or 50kbps is used.
11. Measured with a –20dB input level to avoid a codec slope-overload.
12. For optimum noise performance this input should be driven from a source impedance of less that
100.
6.1.4 Timing
C-BUS Timing
t_CSE
Chip Select Low to First Serial Clock Rising Edge
t_CHS
Last Serial Clock Rising Edge to Chip Select High
t_HIZ
Chip Select High to Reply Data High – Z
t_CSOFF Chip Select High
t_NXT
Command Data Inter-Byte Time
t_CK
Serial Clock Period
Direct Address Timing
t_CH
Decoder or Encoder Clock High
t_CL
Decoder or Encoder Clock Low
t_SU
Decoder Data Set Up Time
t_H
Decoder Data Hold Time
t_PCO
Encoder Clock High to Encoder Data Valid
t_SU + t_H = Data True Time
Min.
Typ. Max. Units
ab
c
2.0 4.0 8.0
s
4.0 4.0 8.0
s
2.0 s
2.0 4.0 8.0
s
4.0 8.0 16.0
s
2.0 4.0 8.0
s
1.0
s
1.0
s
0.45
s
0.60
s
0.75 s
Table 12: Timing Information

1998 MX-COM, Inc.
www.mxcom.com Tel: [phone] 744 5050 Fax: [phone]
Doc. # 20480033.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
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