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• Pin Function
(
No.
Pin Name
1/0
Function
1
N.C
-
No connection.
2
VDD OUT
-
1/0 power
pin.
3
N.C
-
No connection
.
4
DO
5
D1
6
D2
7
D3
1/0 Microcontroller
data.
8
D4
9
D5
10
D6
11
D7
12
VSS OUT
-
1/0
ground pin.
13 VSS CORE
-
Logic
ground
pin.
14 VDD CORE
-
Logic
power pin.
15
RAMT
-
No connection.
(
IDE bus
passed diagnostics signal.
16
PDIAG
1/0
17
DASP
1/0
IDE
bus
drive active/slave
present.
18 VSS OUT
-
1
1
0
ground
pin.
19
IOCHRDY
0
IDE
bus
1
/0
channel ready
signal.
.
20
VDD OUT
-
1
10
power
pin'.
21
HDO
22
HD1
1/0 IDE
bus
data
pins.
23
N.C
-
No
connection.
24
VSS OUT
-
1
10
ground
pin.
25
N.C
-
No connection.
(
No connection
.
26
N.C
-
27
HD2
1/0
IDE bus
data
pin.
28
VDD OUT
-
1/0
power
pin.
29
HD3
1 /0
IDE
bus data
pin.
30
VSS OUT
-
1/0
ground
pin.
31
HD4
32
HD5
1/0 IDE
bus data pins.
33
HD6
34
VDD OUT
-
1
/0 power
pin.
35
VDD OUT1
-
No
connection.
36
SCANS EL
-
No
connection.
37
VSS
OUT
-
1
10
ground
pin.
38
VSS OUT1
-
No connection.
39
HD7
40
HD8
1/0
IDE
bus
data
pins.
41
VSS OUT
-
1
10
ground
pin.
42
VSS OUT1
-
No
connection.
43
HD9
1/0
IDE
bus
data
pin.
44
VDD OUT
-
1
/0
power
pin.
45
HD10
1/0
46
HD11
IDE
bus
data
pins.
47
VSS
OUT
-
1
/0 ground
pin.
48
HD1
2
1 /0
IDE
bus
data
pins.
49
HD13
50
N.C.
-
No
connection.
No.
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
DR- UA124X-2, DR- UA124X- 3
DR- UA124X- 5
Pin Name
1/0
Function
N.C.
-
No connection.
VDDOUT
-
1
/0 power pin.
VSS OUT
-
1
1
0
ground
pin.
HD14
HD15
1/0 IDE
bus data pins.
IOCS16
0
IDE
bus
1/0
channel
size of
16
bits.
VDD
OUT
-
1
1
0
power pin.
VSS OUT
-
1
1
0
ground pin.
HINTRQ
0
IDE
bus
interrupt
request.
DREQ
0
IDE bus data
request.
VSS CORE
-
Logic ground
pin.
VDD CORE
-
Logic
power
pin.
HAO
HA1
I
IDE
bus address.
HA2
HCSO
HCS1
I
IDE
bus
chip
selects.
VSS OUT1
-
No connection.
DACK
I
IDE
bus
data
acknowledge.
HIOR
I
IDE bus
read strobe.
HIOW
I
IDE
bus write strobe.
HRST
I
IDE
bus
reset
signal.
RS
I
Address register/data
register
select.
N.C
-
No
connection.
N.C
No connection.
N.C
No connection.
NREQ
I
Native
bus
data
request.
WR
I
Microcontroller
write
enable.
RD
I
Microcontroller read
enable.
cs
I
M
icrocontroller
chip
enable.
RESET
I
Hardware
reset
VSS OUT1
-
No connection.
CLK
I
Chip
main clock TIL.
VSS OUT
-
1
1
0
ground pin.
INTRO
0
Microcontroller
interrupt request.
NOACK
0
Native
bus
data
acknowledge.
N.C.
-
No
connecti
on.
NDO
ND1
1/0
CDROM data.
ND2
VDDOUT1
-
No
connection.
ND3
1 /0
CDROM
data.
N.C.
-
No
connection.
ND4
ND5
1 /0
CDROM
data.
ND6
VSS OUT1
-
No connection.
ND7
1 /0
CDROM
data.
TES
TH
-
No
connection.
N.C.
-
No
connection.
35
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