isd3900 Winbond Electronics Corp America, isd3900 Datasheet - Page 9

• Manufacturer Part Number: isd3900
• Description: Multi-message Record/playback Devices With Digital Audio Interface
• Manufacturer: Winbond Electronics Corp America

Number
Pin
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Pin Name
SPK+
V
SPK-
V
NC
NC
NC
INTB
RDY/BSYB
RESET
DO
CLK
GPIO3
GPIO2
GPIO1
NC
NC
XTALOUT
SSD
CCD
_PWM
_PWM
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
I
I
I
Function
PWM driver positive output. This SPK+ output, together with SPK- pin,
provide a differential output to drive 8 speaker or buzzer. During
power down this pin is in tri-state.
Or, can be configured as BTL which, together with SPK- pin, provide a
differential voltage output.
Or, can independently switch to AUDOUT or AUXOUT.
Digital Ground for the PWM Driver.
PWM driver negative output. This SPK- output, together with SPK+
pin, provides a differential output to drive 8 speaker or buzzer.
During power down this pin is tri-state.
Or, can be configured as BTL which, together with SPK+ pin, provide a
differential voltage output.
Or, can independently switch to AUDOUT or AUXOUT.
Digital Power for the PWM Driver.
This pin should be left unconnected.
This pin should be left unconnected.
This pin should be left unconnected.
Active low interrupt request pin. This pin is an open-drain output.
An output pin to report the status of data transfer on the SPI interface.
“High” indicates that ISD3900 is ready to accept new SPI commands
or data.
Applying power to this pin will reset the chip. (A high pulse of 50ms or
more will reset the chip.)
Serial data output of the external serial flash interface. Connects to
data input (DI) of external serial flash.
Serial data CLK of the external serial flash interface.
GPIO
GPIO
GPIO
This pin should be left unconnected.
This pin should be left unconnected.
Crystal interface output pin.
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Publication Release Date: July 1, 2010
ISD3900
Revision 1.0