![](http://datasheet.mmic.net.cn/Exar-Corporation/XR17V258IV-F_datasheet_100073/XR17V258IV-F_2.png)
FIGURE 2. PIN OUT OF THE DEVICE
RX
4
GND
MPIO5
GND
TMRCK
ENIR
XR17V258
10
8
10
7
10
6
10
5
10
4
10
3
10
2
10
1
10
0
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
MP
IO
0
MP
IO
1
VC
C
GN
D
CTS
4
#
TX
5
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
AD
24
CB
E
3
IDS
E
L
GN
D
AD
23
AD
22
AD
2
1
AD
20
AD
19
AD
1
8
AD
17
AD
16
CB
E
2
FRA
M
E
#
IR
DY
#
T
RDY
#
D
EVSEL
#
ST
O
P#
P
E
RR#
S
E
RR#
PA
R
C
BE1
AD
15
AD
1
4
AD
1
3
AD
1
2
AD
1
TX7
RX6
CTS6#
DSR6#
CD6#
RI6#
RTS6#
DTR6#
TX6
GND
VCC
MPIO7
MPIO6
MPIO4
RX5
CTS5#
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
RX1
CTS1#
DSR1#
CD1#
RI1#
RTS1#
DTR1#
TX1
EECS
EEDI
EECK
EEDO
VCC
PME#
XTAL1
XTAL2
128
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
109
31
32
33
34
AD
10
AD
9
AD
8
35
36
GN
D
C
BE0
MPIO
2
78
77
76
75
74
73
DTR
5#
RTS
5
#
RI
5#
CD
5#
MP
IO
3
RI7#
DTR7#
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
RX7
CTS7#
DSR7#
CD7#
RTS7#
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
AD26
AD27
AD28
AD29
AD30
AD31
GND
CLK
RST#
144
143
142
141
140
139
138
137
136
135
134
133
132
131
130
129
TX4
DTR
4#
RTS
4
#
RI
4#
CD
4#
RX
3
CTS
3
#
TX3
DTR
3#
RTS
3
#
RI
3#
CD
3#
RX
2
CTS
2
#
TX2
DTR
2#
RTS
2
#
RI
2#
CD
2#
DS
R2
#
DS
R3
#
DS
R4#
DS
R5
#
RX0
CTS0#
DSR0#
CD0#
RI0#
RTS0#
DTR0#
TX0
INTA#
AD25
VCC
VC
C
VC
C
VC
C
ORDERING INFORMATION
PART NUMBER
PACKAGE
OPERATING TEMPERATURE RANGE
DEVICE STATUS
XR17V258IV
144-Lead LQFP
-40°C to +85°C
Active
XR17V258
2
66MHZ PCI BUS OCTAL UART WITH POWER MANAGEMENT SUPPORT
REV. 1.0.2