isd3900 Winbond Electronics Corp America, isd3900 Datasheet - Page 8

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

5
Number
Pin
10
11
12
13
14
15
16
17
1
2
3
4
5
6
7
8
9
PIN DESCRIPTION
Pin Name
NC
CSB
DI
I
GPIO7
I
GPIO6
I
GPIO5
I
GPIO4
NC
NC
V
V
VREG
MISO
SCLK
SSB
MOSI
V
2
2
2
2
S_SDI/
S_SCK/
S_WS/
S_SDO/
SSD
CCD
CCD
_PWM
I/O
I/O
I/O
O
O
O
O
I
I
I
I
I
I
I
I
Function
This pin should be left unconnected.
Chip Select Bar of the external serial flash interface.
Serial data input to external serial flash interface. Connects to data
output (DO) of external flash memory.
Serial Data Input of the I
be grounded).
Or, can be configured as a GPIO pin.
Clock input in slave mode or clock output in master mode. This pin can
be configured as an external clock buffer if I
used, this pin should be grounded).
Or, can be configured as a GPIO pin.
Word Select (WS) input in slave mode or WS output in master mode (If
I2S is not used, this pin should be grounded).
Or, can be configured as a GPIO pin.
Serial Data Output of the I
should be left unconnected).
Or, can be configured as a GPIO pin.
This pin should be left unconnected.
This pin should be left unconnected.
Digital Ground.
Digital power supply.
A 1.8V regulator to supply the internal logic. A 0.1uF capacitor should
be connected to this pin for supply decoupling and stability.
Master-In-Slave-Out. Serial output from the ISD3900 to the host. This
pin is in tri-state when SSB=1.
Serial Clock input to the ISD3900 from the host.
Slave Select input to the ISD3900 from the host. When SSB is low
device is selected and responds to commands on the SPI interface.
Master-Out-Slave-In. Serial input to the ISD3900 from the host.
Digital Power for the PWM Driver.
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2
S interface (If I2S is not used, this pin should
2
S Interface (If I2S is not used, this pin
Publication Release Date: July 1, 2010
2
S is not used (If I2S is not
ISD3900
Revision 1.0