LG CED-8083B Service Manual page 59

IC301 (HD64F3062) : MICOM
Block Diagram
MD
2
MD
1
MD
0
EXTAL
XTAL
STBY
RES
RESO/FWE*
NMI
ø/P6
7
LWR/P6
6
HWR/P6
5
RD/P6
4
AS/P6
3
BACK/P6
2
BREQ/P6
1
WAIT/P6
0
CS /P8
0 4
ADTRG/CS /IRQ /P8
1 3 3
CS /IRQ /P8
2 2 2
CS /IRQ /P8
3 1 1
IRQ /P8
0 0
* Functions as RESO in the mask ROM versions and as FWE in the flash memory version.
42
Interrupt controller
ROM
(mask ROM or
flash memory)
RAM
16-bit timer unit
8-bit timer unit
Programmable
timing pattern
controller (TPC)
Port B Port A
Port 3
Address bus
Data bus (upper)
Data bus (lower)
H8/300H CPU
Watchdog timer
(WDT)
Serial communication
interface
(SCI) x 2 channels
A/D converter
D/A converter
Port 4
P5 /A
3
P5 /A
2
P5 /A
1
P5 /A
0
P2 /A
7
P2 /A
6
P2 /A
5
P2 /A
4
P2 /A
3
P2 /A
2
P2 /A
1
P2 /A
0
P1 /A
7
P1 /A
6
P1 /A
5
P1 /A
4
P1 /A
3
P1 /A
2
P1 /A
1
P1 /A
0
P9 /SCK /IRQ
5
P9 /SCK
4
P9 /RxD
3
P9 /RxD
2
P9 /TxD
1
P9 /TxD
0
Port 7
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1 5
/IRQ
0 4
1
0
1
0