ISD1964SYI Datasheet, PDF (25/29 Pages) List of Unclassifed Manufacturers – SINGLE-CHIP, MULTIPLE-MESSAGE VOICE RECORD/PLAYBACK DEVICE

ISD1900
Example #2: Fixed Message Configuration Operations under Direct Mode.
VCC
VCC
4.7 k Ω∗
4.7 k Ω∗
4.7 kΩ∗
4.7μ F*
0.1 μF*
0.1μ F*
4.7μ F*
Rosc*
R/P
M1
M2
M3
M4
M5
M6
M7
M8
LED
Drct
FMC3
FMC2
FMC1
V_CCD
V_SSD
ISD1900
V_CCA
V_SSA
1 k Ω ^D1
Vcc
VCCA
VCCD
VCCP
V_CCD
0.1μ F
10 μ F*
V_CCA
0.1μ F
10 μ F
FT
Mic+_AnaIn
Mic-
AGC
Rosc
V_CCP
V_SSP1
V_SSP2
0.1μ F
10 μF*
V_CCP
10 μF*
0.1μ F
SP+/AUX
SP-/NC
Speaker
Gnd
Good Audio Design Practices
36
Nuvoton’s ChipCorder are very high-quality single-chip voice recording and playback devices. To ensure the
highest quality voice reproduction, it is important that good audio design practices on layout and power supply
decoupling are followed. See Application Information links below for details.
Good Audio Design Practices
http://www.Nuvoton-usa.com/products/isd_products/chipcorder/applicationinfo/apin11.pdf
Single-Chip Board Layout Diagrams
http://www.Nuvoton-usa.com/products/isd_products/chipcorder/applicationinfo/apin12.pdf
It is strongly recommended that before any design or layout project starts, the designer should contact Nuvoton
Sales Rep for the most update technical information and layout advice.
Publication Release Date: Jan 5, 2009
25
Revision 0.51