Yamaha CRD-HD1300 Service Manual page 33

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3 7 63 1515 0
IC2 : HD6417014F28 (MAIN P.C.B.)
µ-COM (CPU)
No. Port
1 PE14
2 PE15
3 VSS
4 A0
5 A1
6 A2
7 A3
8 A4
9 A5
10 A6
11 A7
12 A8
13 A9
14 A10
15 A11
16 A12
17 A13
18 A14
19 A15
20 A16
21 Vcc
22 A17
23 Vss
24 /RAS
TE
L 13942296513
25 /CASL
26 /CASH
27 Vss
28 RDWR
29 A18
30 A19
31 /WAIT
32 PB9
33 Vss
34 /RD
35 /WDTOVF
36 /WRH
37 Vcc
38 /WRL
39 Vss
40 /CS1
41 /CS0
42 PA9
43 /IRQ2
44 /CS3
45 PA6
46 /IRQ1
47 TXD1
48 RXD1
www
49 /IRQ0
50 TXD0
51 RXD0
52 D15 .
53 D14
54 D13
55 Vss
56 D12
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Name I/O
DIP2 IN
LED3 OUT
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
N_RAS O
N_CASL O
N_CASH O
RDWR O
O
O
N_WAIT I
CPU_MUTE O
N_RD O
N_WRH O
N_WRL O
N_CDR O
N_ROM O
N_CPU_RST O
N_IRQ2
N_CS3
SB_N_OSD
N_INT_CDR I
TXD1 O
RXD1 I
N_INT_REM I
TXD0
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RXD0
i I/O
I/O
I/O
I/O
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2 9
8
for extend
Fan control
GND
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
+5V power supply
Address bus
GND
DRAM control
Q Q
3 6 7 1 3 1 5
DRAM control
DRAM control
GND
DRAM control
Address bus
Address bus
WAIT input
Output mute
GND
Read strobe
–
Write strobe
+5V power supply
Write strobe
GND
ACDR2 chip select
Flash memory chip select
Resetting peripheral devices
for extend
for extend
OSD IC chip select
ACDR2 interrupt
RS-232C output
RS-232C input
Remote control input
for extend
co
for extend
Data bus .
Data bus
Data bus
GND
Data bus
CDR-HD1300/CDR-HD1300E
9 4 2 8
Function
0 5 8 2 9 9 4 2 8
m
9 9
9 9
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