MSM9841 데이터 시트보기 (PDF) - Oki Electric Industry
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MSM9841 Datasheet PDF : 9 Pages
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¡ Semiconductor
FEDL9841-04
MSM9841
PIN DESCRIPTIONS
Symbol
IOW
IOR
ADSD
DASD
SIOCK
XT
XT
VCK
RESET
TEST0
TEST1
SG
MIN
LIN
MOUT
LOUT
AOUTL
AOUTR
DVDD
DGND
AVDD
AGND
Type
Description
Write pulse input pin to write external memory data to MSM9841 during DMA transfer.
I
If DMA transfer is not used, set this pin to "H" level.
Read pulse input pin to read data of MSM9841 during DMA transfer.
I
If DMA transfer is not used, set this pin to "H" level.
16-bit serial data input pin when external ADC is used. If external ADC is not used,
I
set this pin to "L" level.
O 16-bit serial data output pin when external DAC is used.
O Synchronizing clock for 16-bit serial data input/output when external ADC or DAC is used.
I Oscillator connection pins. When external clock is used, input clock into XT pin and leave XT
O pin open.
Outputs sampling frequency selected at recording or playback.
O
VCK pin is used as a synchronizing signal when external ADC or DAC is used.
I When this pin is "L" level input, the LSI is initialized.
I Pins for testing. Set the pins to "L".
O Analog circuit signal ground output pin.
Inverting input pin for built-in OP amplifier. Noninverting input pin is connected to SG (Signal
I
Ground) internally.
O MOUT is the output of internal OP amplifier to MIN, and LOUT is to LIN.
Left analog output pin from built-in LPF. This is the output pin of playback wavefroms, and is
O
connected to the amplifier for driving speakers.
Right analog output pin from built-in LPF. This is the output pin of playback wavefroms, and
O
is connected to the amplifier for driving speakers.
Digital power supply pin. Insert a minimum 0.1 mF bypass capacitor between this pin and
—
DGND pin.
— Digital GND pin.
Analog power supply pin. Insert a minimum 0.1 mF bypass capacitor between this pin and
—
AGND pin.
— Analog GND pin.
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