isd2548x Winbond Electronics Corp America, isd2548x Datasheet - Page 34

• Manufacturer Part Number: isd2548x
• Description: Single-chip, Multiple-messages, Voice Record/playback Device 32-, 40-, 48-, And 64-second Duration
• Manufacturer: Winbond Electronics Corp America

1
2A
2B
3
4A
4B
R2
R4
R6, R7
C1, C4, C5
C2
C3
Control Step
Parts
TABLE 16: APPLICATION EXAMPLE – PASSIVE COMPONENT FUNCTIONS
Select Record/Playback Mode
Begin playback
Begin record
Pause record or playback
End playback
End record
Release time constant
Series limiting resistor
Pull-up and pull-down resistors
Power supply capacitors
Attack/Release time constant
Low-frequency cutoff capacitor
TABLE 15: APPLICATION EXAMPLE – PUSH-BUTTON CONTROL
Function
Function
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P/ R = As desired
P/ R = HIGH, CE = Pulse LOW
P/ R = LOW, CE = Pulse LOW
Automatic at EOM marker or PD = Pulsed HIGH
PD = Pulsed HIGH
CE = Pulsed LOW
Sets release time for AGC
Reduces level to prevent distortion at
higher supply voltages
Defines static state of inputs
Filters and bypass of power supply
Sets attack/release time for AGC
Provides additional pole for low-frequency
cutoff
ISD2532/40/48/64
Action
Comments