Sharp ER-A750 Service Manual page 40

3) Block diagram
D7
D6
D5
D4
D3
D2
D1
D0
WRO
RDO
RES
W
R
RES
AB1
AB0
A5
A4
A3
A2
A1
A0
SL00
SL01
SL02
SL10
SL11
SL12
SL20
SL21
SL22
SL30
SL31
SL32
TRV
USICH
CS3
CS2
CS1
CS0
TO/FROM USART
Inline
cont
Data bus buffer
Read/write
control
Decorder
control
CHSL
Power
supply
cont.
OCS
Timer0 control
Timer0
Timer1 control
Timer1
Timer2 control
Timer2
Timer3 control
Timer3
Interrupt control
7 – 10
TCR0
RCVDT0
TCR1
RCVDT1
TCR2
RCVDT2
TCR3
RCVDT3
RTS1
RTS CNT
RTS0
RCVRDY3
RCVRDY2
RCVRDY1
RCVRDY0
TRNEMP3
TRNEMP2
TRNEMP1
TRNEMP0