Yamaha CDR-HD1000 Service Manual page 18

CDR-HD1000
QQ
3 7 63 1515 0
IC2 : HD6417014F28
Pin Description
No. Port
1 DACK0
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 CPU_MUTE
33 Vss
34 /RD
35 /WDTOVF
36 /WRH
37 Vcc
38 /WRL
39 Vss
40 /CS1
41 /CS0
42 PA9 N_CPU_RST
43 /IRQ2
44 /CS3
45 /CS2
46 /IRQ1 N_INT_CDR
47 TXD1
48 RXD1
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49 /IRQ0 N_INT_REM
50 TXD0
51 RXD0
52 D15 .
53 D14
54 D13
55 Vss
56 D12
17
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Name I/O
DACK0 for extend
LED3 for extend
GND
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
O Adress bus
+5V power supply
O Adress bus
GND
N_RAS O DRAM control
N_CASL O DRAM control
N_CASH O DRAM control
GND
RDWR O DRAM control
O Adress bus
O Adress bus
N_WAIT I WAIT input
O Output mute
GND
N_RD O Read strobe
–
N_WRH O Write strobe
+5V power supply
N_WRL O Write strobe
GND
N_CDR O ACDR2 chip select
N_ROM O Flash memory chip select
O Resetting peripheral devices
N_IRQ2 for extend
N_CS3 for extend
N_CS2 for extend
I ACDR2 interrupt
TXD1 O RS-232C output
RXD1 I RS-232C input
I Remote control input
TXD0 for extend
x ao
y
RXD0 for extend
i I/O Data bus
I/O Data bus
I/O Data bus
GND
I/O Data bus
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8
Function
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2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
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9 9
2 8 9 9