XRT72L50
á
SINGLE CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
REV. 1.2.1
2
ORDERING INFORMATION
FIGURE 2. PIN OUT OF THE XRT72L50
X R T72L50
TD
O
TD
I
VD
D
TR
S
T
GN
D
RDY
_
D
T
C
K
WR
_
R
/W
CS
AL
E_
A
S
RD_
DS
TC
K
TM
S
In
t
GN
D
A(
0
)
A(
1
)
A(
2
)
A(
3
)
A(
4
)
A(
5
)
A(
6
)
A(
7
)
A(
8
)
VD
D
N
ibI
nt
f
GN
D
MO
T
O
Re
s
e
t
T
e
s
tM
ode
VD
D
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
GN D
T xN ib3/T xHDLCDat3
T xN ib2/T xHDLCDat2
T xN ib1/T xHDLCDat1
T xN ib0/T xHDLCDat0
TxS er/S nd M sg
TxA IS E n
T xInClk
GN D
TxFram e R ef
VD D
D(7)
D(6)
D(5)
D(4)
D(3)
D(2)
D(1)
D(0)
GN D
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
VD
D
DM
O
Ex
tL
O
S
RL
O
L
Rx
P
O
S
Rx
NE
G
Rx
L
ine
Cl
k
NC
GN
D
Re
q
R
L
OOP
L
OOP
TA
O
S
Tx
L
e
v
En
c
o
D
is
Tx
P
O
S
Tx
N
E
G
T
x
L
ineC
lk
VD
D
Tx
Fr
a
m
e
GN
D
T
x
N
ibC
lk
/S
ndF
C
S
T
x
N
ibF
ra
m
e
/V
al
F
C
S
Tx
O
H
Fr
a
m
e
/Tx
H
D
L
C
lk
T
x
O
H
E
nabl
e/
T
x
HDLCDa
t7
T
x
O
H
In
d/
T
x
HDL
CD
a
t6
T
x
O
H
/T
x
HDL
CDa
t5
T
x
O
H
In
s
/T
x
HD
L
CDa
t4
T
x
O
HCl
k
VD
D
GN D
RxNib3 /R xHDLCDat3
RxNib2 /R xHDLCDat2
RxNib1 /R xHDLCDat1
RxNib0 /R xHDLCDat0
RxS er/RxIdle
RxA IS
RxClk
GN D
RxF ram e
VD D
RxO u tC lk /R xHDLCDat7
RxRed
RxO O F
RxLO S
RxO HClk/R xHDLCClk
RxO H In d
RxO H /R xHDLC D at6
R xO H E nable/R xH D LC D at5
RxO H F ram e/RxHDLCDat4
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
PART NUMBER
PACKAGE TYPE
OPERATING TEMPERATURE RANGE
XRT72L50IQ
14x20mm, 100 Lead Plastic QFP
-40°C to +85°C