MSM6688LGS-2K(2002) データシートの表示（PDF） - Oki Electric Industry
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MSM6688LGS-2K Datasheet PDF : 167 Pages
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OKI Semiconductor
FEDL6688-6688L-04
MSM6688/6688L
Pin
Symbol
Type
Description
(Data I/O) Used to connect the DIN and DOUT pins of DRAM and serial
44
DI/O
I/O register. This pin outputs the data to be written into the serial register or
inputs the data read from the serial registers.
45
DROM
I
(Data ROM) Used to connect the DOUT pin of each external serial voice
ROM.
40
CS1
41
CS2
42
CS3
43
CS4
O
(Chip Select) Used to connect the CS pin of serial register and the CS (CS1,
CS2, CS3) pins of each serial voice ROM.
(Register Select) These are used to select the number of external serial
registers.
31
RSEL1
32
RSEL2
I
RSEL2
RSEL1
L
L
H
H
L
H
L
H
Number of serial registers
1
2
3
4
10
MCUM
53
RESET
35
PDWN
47
XT
48
XT
34
TEST
33
TEST
This pin is used to select either the stand-alone mode or the microcontroller
interface mode.
I
Low level: Stand-alone mode
High level: Microcontroller interface mode
I
A high input level at this pin causes the MSM6688 to be initialized and to go
into the power down state.
(Power Down) When a low level is input to this pin, the MSM6688 goes to the
power down state. Unlike the RESET pin, this pin does not force to reset the
I
MSM6688. When an low level is applied to this PDWN pin during recording
operation, the MSM6688 is halted, and will be maintained in the power down
state while PDWN is low. After this pin is restored to a high level,
postprocessing for recording will be performed.
Used to connect an oscillator. When an external clock is used, input the clock
I through this pin. At the power down state, this pin must be set to the ground
level.
O
Used to connect an oscillator. When an external clock is used, this pin must
be left open.
I
Used to test the MSM6688. Input a low level to the TEST pin and a high level
to the TEST pin.
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