The following table shows the pin functions of LSI16.

Pin No.

Terminal

In/Out

Function

1

REQB

Out

Not used.

2, 3, 60 ~ 63

FI8 ~ FI10,

In

Not used. Connected to +5 V.

SI8 ~ SI10

 

 

 

4

VCC

In

+5 V source

5

CRDB

In

Read enable signal input

6

CWRB

In

Write enable signal input

7

CCSB

In

Chip select signal input

8, 9, 11

T, STBY, W

In

Not used. Connected to +5 V.

10

RESB

In

Reset signal input

12

CKI

In

10 MHz clock input

13, 14

TMD, TST

In

Not used. Connected to ground.

15

CKO

Out

Not used.

16

GND

In

Ground (0 V) source

17

XIN

In

Not used. Connected to ground.

18

XOUT

Out

Not used.

19

TRES

In

Not used. Connected to ground.

20 ~ 23, 25 ~ 28

CD0 ~ CD7

In/Out

Data bus

24

GND

In

Ground (0 V) source

29 ~ 31

CA0 ~ CA2

In

Address bus

32

VCC

In

+5 V source

33 ~ 39, 41 ~ 43,

FI0 ~ FI9,

In

Key input signal input

53 ~ 55, 57 ~ 63

SI0 ~ SI9

 

 

40

VCC

In

+5 V source

44 ~ 47, 49 ~ 52

KC0 ~ KC7

Out

Key scan signal

48, 56

GND

In

Ground (0 V) source

64

VCC

In

+5 V source

FILTER BLOCK

Since the sound signals from the DAC are stepped waveforms, the filter block is added to smooth the waveforms.

16 V 10 µ

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

To main volume

IC203

M5218APR

C333(H)

1 K

C471B

AG

 

AVDD

AVDD

Q210/211

10 K

2SC1740

 

1 K

1 K

 

C103(H)

1 K

 

AG

AG

 

50 V 0.47 µ

From the DAC

— 11 —

Page 11
Image 11
Casio WK-1500 manual Filter Block

WK-1500 specifications

The Casio WK-1500 is a versatile and user-friendly keyboard designed for aspiring musicians and experienced players alike. Part of Casio’s renowned line of portable keyboards, the WK-1500 combines advanced features with a compact design, making it a suitable choice for both home practice and live performances.

At the heart of the WK-1500 is its impressive sound engine, which boasts an extensive library of sounds. With over 600 built-in tones, including a variety of acoustic and electronic instruments, players can easily find the perfect voice for any musical genre. The keyboard also features over 180 rhythms, allowing users to explore a broader musical landscape and enhance their compositions with supportive accompaniments.

One of the standout features of the WK-1500 is its 76 full-size touch-sensitive keys. This is particularly beneficial for pianists, as the touch sensitivity provides a more responsive playing experience. Players can express dynamics and nuances in their performances, enriching their musical interpretations.

The WK-1500 is also equipped with a powerful performance tool known as the "Advanced Synthesizer." This technology allows users to create and modify sounds in real-time, providing endless creative possibilities. Additionally, the keyboard includes a built-in arpeggiator that offers various patterns and styles, further expanding the creative potential.

For those who enjoy composing and recording, the WK-1500 offers built-in song storage with the ability to save and play back original compositions. Users can also connect the keyboard to a computer via USB, making it easy to transfer MIDI data or use the keyboard in conjunction with digital audio workstations.

Another notable characteristic of the WK-1500 is its durability and portability. Weighing in at just under 10 pounds, it is lightweight enough to transport easily. The keyboard also comes with a robust stand and a power adapter, ensuring that musicians can play wherever they go.

In conclusion, the Casio WK-1500 is a feature-packed keyboard that caters to the needs of a wide range of musicians. With its extensive sound library, touch-sensitive keys, advanced synthesizer capabilities, and portability, the WK-1500 stands out as an excellent choice for both learning and performing, ensuring it remains a popular option in the world of portable keyboards. This combination of features, technology, and user-friendly design makes it a valuable instrument for music enthusiasts of all levels.