ML4644
PIN DESCRIPTION
(Continued)
PIN #
23
24
25
26
27
28
29
30
31
NAME
RxOUT2P
FUNC.
Output
DESCRIPTION
Receive signal pair for
DTE port 2.
Receive signal pair for
DTE port 2.
+5V power supply.
+5V power supply.
No connection.
No connection.
Input
Input
Input
Receive signal pair for
MAU port.
Receive signal pair for
MAU port.
Active low. This pin is
used to enable the SQE
function of DTE port 2.
Active low. This pin is
used to enable the SQE
function of DTE port 3.
Receive signal pair for
DTE port 3.
Receive signal pair for
DTE port 3.
No connection.
Output
Receive signal pair for
DTE port 4.
Receive signal pair for
DTE port 4.
No connection.
Output
Open collector jabber
LED driver for Jabber of
DTE port 3.
No connection.
Output
Open collector jabber
LED driver for Jabber of
DTE port 4.
No connection.
No connection.
Input
Active low. This pin is
used to enable the SQE
function of DTE port 4.
Open collector jabber
LED driver for Jabber of
DTE port 1.
Transmit signal pair for
DTE port 4.
Transmit signal pair for
DTE port 4.
67
68
X2
NC
Input
65
66
NC
X1
Input
59
60
61
CDOUT4N
Output
PIN #
48
NAME
Tx4
FUNC.
Output
DESCRIPTION
Open collector transmit
LED driver for Jabber of
DTE port 4.
Open collector transmit
LED driver for Jabber of
DTE port 3.
Open collector transmit
LED driver for Jabber of
DTE port 2.
Open collector transmit
LED driver for Jabber of
DTE port 1.
Ground.
Collision signal pair for
DTE port 1.
Collision signal pair for
DTE port 1.
Transmit signal pair for
DTE port 1.
Transmit signal pair for
DTE port 1.
No connection.
Collision signal pair for
DTE port 4.
Collision signal pair for
DTE port 4.
Collision signal pair for
MAU port.
ECL output driven by
crystal. Can drive X1
inputs on other
ML4644S.
No connection.
Collision signal pair for
MAU port.
Active low. This pin is
used to enable the SQE
function of DTE port 1.
No connection.
10MHz Crystal input pin.
This pin can also be used
as a 10MHz clock input
pin, or can connect to X3
of another that is driven
by a crystal or 10MHz
clock.
10 MHz Crystal input pin.
No connection.
RxOUT2N Output
VCC
VCC
NC
NC
RxINP
RxINN
SQEN2
Power
Power
49
Tx3
Output
50
Tx2
Output
51
Tx1
Output
52
53
54
55
56
57
58
GND
CDOUT1P
CDOUT1N
Ground
Output
Output
32
SQEN3
Input
TxIN1N
TxIN1P
NC
CDOUT4P
Input
Input
33
34
35
36
37
38
39
RxOUT3P
Output
RxOUT3N Output
NC
RxOUT4P
Output
RxOUT4N Output
NC
JAB3
CDINN
X3
Input
Output
40
41
NC
JAB4
62
63
64
NC
CDINP
SQEN1
Input
Input
42
43
44
NC
NC
SQEN4
45
JAB1
Output
46
47
TxIN4N
TxIN4P
Input
Input
3
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
