ml4644 Microsemi Corporation, ml4644 Datasheet - Page 3

• Manufacturer Part Number: ml4644
• Description: Port Multiplexer
• Manufacturer: Microsemi Corporation

PIN DESCRIPTION
PIN #
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
NAME
RxOUT2P Output
RxOUT2N Output
VCC
VCC
NC
NC
RxINP
RxINN
SQEN2
SQEN3
RxOUT3P Output
RxOUT3N Output
NC
RxOUT4P Output
RxOUT4N Output
NC
JAB3
NC
JAB4
NC
NC
SQEN4
JAB1
TxIN4N
TxIN4P
FUNC.
Power
Power
Input
Input
Input
Input
Output
Output
Input
Output
Input
Input
(Continued)
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.
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.
Receive signal pair for
DTE port 4.
Receive signal pair for
DTE port 4.
No connection.
Open collector jabber
LED driver for Jabber of
DTE port 3.
No connection.
Open collector jabber
LED driver for Jabber of
DTE port 4.
No connection.
No connection.
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.
PIN #
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
NAME
Tx4
Tx3
Tx2
Tx1
GND
CDOUT1P
CDOUT1N
TxIN1N
TxIN1P
NC
CDOUT4P
CDOUT4N
CDINN
X3
NC
CDINP
SQEN1
NC
X1
X2
NC
FUNC.
Output
Output
Output
Output
Ground
Output
Output
Input
Input
Output
Output
Input
Output
Input
Input
Input
Input
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.
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.
Transmit signal pair for
ML4644
3