Yamaha AW4416, Service Manual

Page: 91 / 154

AW4416
50
Power 3.3V
Port DMA data bus
Ground
SCSI I/O signal (Low active)
Power 5V
SCSI REQ signal (Low active)
Ground
SCSI C/D signal (Low active)
SCSI SEL signal (Low active)
Ground
SCSI MSG signal (Low active)
SCSI RST signal (Low active)
Ground
SCSI ACK signal (Low active)
Power 5V
SCSI BSY signal (Low active)
Not used
Ground
Power 5V
SCSI ATN signal (Low active)
Ground
SCSI data parity (Low active)
Power 5V
SCSI data bus (Low active)
Ground
Not used
SCSI data bus (Low active)
Power 5V
SCSI data bus (Low active)
Ground
SCSI data bus (Low active)
Power 5V
SCSI data bus (Low active)
Ground
SCSI data bus (Low active)
Not used
Power 5V
SCSI data bus (Low active)
Ground
SCSI data bus (Low active)
Power 5V
Not used
Ground
Power 3.3V
External clock input
Ground
Oscillator input
Oscillator output
Power 3.3V
Input clock select
System clock select
Internal VCO control
PLL power down input
PLL control
Test monitor output
Test input
Data bus
Power 5V
Data bus
Address bus
Ground
Power 3.3V
Address bus
Data write (Low active)
Data read (Low active)
System reset (Low active)
Interrupt request (Low active)
Chip select (Low active)
Ground
Port DMA acknowledge
Port read (Low active)
Port wright (Low active)
Port DMA request (Low active)
Port DMA data bus
Power 5v
Port DMA data bus
Ground
PIN
NAME I/O FUNCTION
NO.
PIN
NAME I/O FUNCTION
NO.
SPC7214F0B (XY625A00) SCSI Control
MAIN: IC820
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
LV
DD
EXCLK
Vss
OSCIN
OSCOUT
LV
DD
CLKSEL0
CLKSEL1
VC
XPLLPD
PLLCT0
PLLCT1
TESTMON
TESTEN
DB0
DB1
DB2
DB3
HV
DD
DB4
DB5
DB6
DB7
AD0
Vss
LV
DD
AD1
AD2
AD3
AD4
XWR
XRD
XRESET
XINT
XCS
Vss
XPDACK
XPRD
XPWR
PDREQ
PD15
PD0
PD14
PD1
HV
DD
PD13
PD2
PD12
PD3
Vss
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
LV
DD
PD11
PD4
PD10
PD5
PD9
PD6
PD8
PD7
Vss
XSIO
HV
DD
XSREQ
Vss
XSCD
XSSEL
Vss
XSMSG
XSRST
Vss
XSACK
HV
DD
XSBSY
NC
Vss
HVDD
XSATN
Vss
XSDBP
HV
DD
XSDB7
Vss
NC
XSDB6
HV
DD
XSDB5
Vss
XSDB4
HV
DD
XSDB3
Vss
XSDB2
NC
HV
DD
XSDB1
Vss
XSDB0
HV
DD
NC
Vss
I
I
O
I
I
O
I
I
I
O
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
I
I
I
I
I
I
O
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
































































