ML4644
PIN CONNECTIONS
9
8
7
6
5
4
3
2
1
68 67 66 65 64 63 62 61
TxIN2N
CDINN
CDOUT4N
CDOUT4P
NC
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
60
59
58
57
56
55
TxIN3P
TxIN3N
NC
TxOUTN
TxOUTP
RESERVED
RRSET
TxIN1P
TxIN1N
54 CDOUT1N
53 CDOUT1P
52 GND
ML4644
NC
JAB2
51
50
49
48
47
46
45
44
Tx1
RxOUT1P
RxOUT1N
REC
Tx2
Tx3
Tx4
RxOUT2P
RxOUT2N
VCC
TxIN4P
TxIN4N
JAB1
SQEN4
VCC 26
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
PIN DESCRIPTION
PIN # NAME
FUNC.
DESCRIPTION
PIN # NAME
FUNC.
DESCRIPTION
No connection.
1
2
3
4
5
CDOUT2P Output
Collision signal pair for
DTE port 2.
13
14
NC
TxOUTN Output
Transmit signal pair for
MAU port.
CDOUT2N Output
Collision signal pair for
DTE port 2.
15
16
17
TxOUTP
Reserved
RRSET
Output
Transmit signal pair for
MAU port.
COLL
Output
Open collector LED
driver for collision.
This pin should be tied
to VCC.
CDOUT3P Output
CDOUT3N Output
NC
Collision signal pair for
DTE port 3.
Input
Bias setting external
resistor, 61.9ký,
connected to VCC
Collision signal pair for
DTE port 3.
6
7
No connection.
18
19
NC
No connection.
TxIN2P
Input
Transmit signal pair for
DTE port 2.
JAB2
Output
Open collector jabber
LED driver for Jabber of
DTE port 2.
8
NC
No connection.
No connection.
20
21
22
RxOUT1P Output
RxOUT1N Output
Receive signal pair for
DTE port 1.
9
NC
10
TxIN2N
Input
Input
Input
Transmit signal pair for
DTE port 2.
Receive signal pair for
DTE port 1.
11
12
TxIN3P
TxIN3N
Transmit signal pair for
DTE port 3.
REC
Output
Open collector LED
driver for receive.
Grounding this pin
enables loopback.
Transmit signal pair for
DTE port 3.
2
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
