Casio QT-2100 Service Manual page 26

Ex-590
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5-6. G/A (IC15)
5-6-1. BLOCK DIAGRAM
#INTC2
#INTC1
D0-D15
RD/#WE
#CS
A0-A3
A23
A20
A21
A22
#RD
#WE
#RESET
CLK
(1.8432MHz)
PCMIN
CE1B
CE2B
CFIN
CE1A
CFCE
CE2A
#CS4~#CS8 (138)
#G
B
A
#G
B
A
245
*5
245
EN
*1
EN (DIR)
#CS1
G
#CS2
138
#G2A
#CS3
#G2B
#CS4
#CS5
1(A)
#CS6
2(B)
#CS7
3(C)
#CS8
PCIN
PCMG
CFCE1A
CIN
CFG
CFCE2A
— 24 —
D0-D7
D6
D5
D4
D3
D2
D1
D0
#int1
UART1
#int2
UART2
#int3
UART3
#int4
UART4
#int5
UART5
30PIN
BFI1
BFI2
BFI3
BFI4
GD0-GD15
GA0-GA3
#INT6
#INT7
#GCS1
#GCS2
×6
U1_CTS
U1_DSR
U1_SIN
U1_DTR
U1_RTS
U1_SOUT
#GRD
#GWE
BFO1
BFO2
BFO3
BFO4

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