Manual

ISD14B20
Publication Release Date: October 9, 2007
- 14 - Revision 0
Example of four Fixed-Message Configuration:
Fig. 8: Record Operation under FMC mode
Mic+/-
or AnaIn
LED
FM3
Norm/Mode
FM2
FM1
M1 ~ M4
Start
Start
Stop
End of Duration
R / P
T
FSet
T
Deb
T
Settle1
T
Deb
T
Deb
T
Stop1
Fig. 9: Playback Operation under FMC mode
Sp+
Sp-
LED
FM3
Norm/Mode
FM2
FM1
M1 ~ M4
Stop Start
End of Message
R / P
Start
T
FSet
T
Deb
T
Deb
T
Deb
T
EOM
T
Settle2
5.3. OTHER OPERATIONS
5.3.1. Rosc Operation
• When the R
OSC
varies from 53.3 KΩ to 160 KΩ, the sampling frequency changes from 12 to 4 kHz
accordingly.