CVSD Codec
CMX639
1.5
General Description
Data Enable
1
0
1
Powersave
Encoder Output
Enable
High Z (open circuit)
V
SS
1
don't care
0
Table 2 Encoder Output
Clock Mode 1
0
0
1
1
Clock Mode 2
0
1
0
1
Data/Sampling Clock Rate
(CLOCK/XTAL = f = 1.024MHz)
External Clocks
Internally generated @ f/16
Internally generated @ f/32
Internally generated @ f/64
Table 3 Clock Modes and Pins
Example for f = 1.024MHz
External Clocks
Internally generated @ 64kbps
Internally generated @ 32kbps
Internally generated @ 16kbps
1.6
Application Notes
Figure 3 System Configuration using the CMX639
©
2000
Consumer Microcircuits Limited
7
CMX639/2