Casio CTK-620L Service Manual

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GATE ARRAY (LSI7: UPD65005GF-419)
The gate array can control 63 LEDs of key illuminators. In accordance with the command from the CPU, the
LSI is capable of controlling the illuminator LEDs. The following table shows the pin functions of LSI7.
DAC (LSI6: UPD6379GR)
The DAC receives 16-bit serial data output from the DSP. The data contains digital sound data of the
melody, chord, bass, and percussion for the right and left channels. The DAC converts the data into
analog waveforms and output them to each channel separately.
.oNniPlanimreTtuO/nI
noitcnuF
6~31OM,0OM,1IM,0IM—desutoN
85,34,62,7DNGnIecruos)V0(DNG
44,72,8DDVnIecruos)V5(DDVL
21~93BD~0BDnIsubataD
51~312AM~0AMnIsubsserddA
61ECNnIlangiselbanepihC
91RWNnIlangiselbaneetirW
12,02SRN,DRN—desutoN
,23~82,52~22
84~54,24~53
02L~0LtuOtuptuolangisevirdDEL
25~0532L~12LtuOtuptuolangisnommocDEL
95,75~3592L,82L~42L—desutoN
36~063I~0I—desutoN
,33,81,71,2,1
46,94,43
CN— detcennoctoN
Synch signal
Data
Word clock
Bit clock
Data
Word clock
Bit clock
DSP
LSI2
HG51B277FB
DAC
LSI6
UPD6379GR
CPU
LSI1
GT913F
L OUT
R OUT
SI
LRCK
CLK
SO
WCKO
SCK1
SO
LRCK
BCK
SINC
SI
WCKI
BCKI

Casio CTK-620L Specifications

General

Brand	Casio
Model	CTK-620L
Category	Electronic Keyboard
Language	English