NLXT901PC.E2 S E001 Intel, NLXT901PC.E2 S E001 Datasheet - Page 10

• Manufacturer Part Number: NLXT901PC.E2 S E001
• Manufacturer: Intel

Specifications of NLXT901PC.E2 S E001

• Lead Free Status / RoHS Status: Not Compliant

LXT901/907 — Universal 10BASE-T and AUI Transceivers
10
1. I/O Column Coding: I = Input, O = Output, OD = Open Drain
PLCC
21
22
23
33
24
25
26
27
28
29
30
31
36
32
35
37
38
39
40
Table 1.
–
LQFP
37
38
39
55
40
42
44
45
46
47
51
52
53
58
54
57
59
61
62
3
LXT901/907 Signal Descriptions (Continued)
(LXT901)
(LXT907)
Symbol
RCMPT
TPONB
TPONA
TPOPB
TPOPA
RBIAS
LEDC/
GNDA
DSQE
GND1
GND2
RCLK
RJAB
TPIN
PAUI
RXD
TPIP
FDE
LBK
PLR
STP
CD
OD
I/O
O
O
O
O
O
O
O
O
O
O
–
–
–
I
I
I
I
I
I
I
I
Collision LED (LEDC)/Full Duplex Enable (FDE). Open drain driver for the
collision indicator pulls Low during collision. LED “On”(i.e., Low output) time is
extended by approximately 100 ms.
If externally tied Low, the LXT901/907 enables full duplex operation by disabling
the internal twisted-pair loopback and collision detection circuits in anticipation of
external twisted-pair loopback or full duplex operation.
If this pin is not used, tie high or directly to V
Loopback. Enables internal loopback mode.
Refer to Functional Descriptions for details.
Ground Returns. Grounds
(LQFP Only)
Bias Control. A 12.4 k
circuit bias.
Remote Compatibility. Output goes High to signal the controller that the remote
port is compatible with the LXT901/LXT907 remote signaling features.
Receive Data. Connect RXD directly to the receive data input of the controller.
Carrier Detect. An output to notify the controller of activity on the network.
Receive Clock. A recovered 10 MHz clock which is synchronous to the received
data. Connect to the controller receive clock input.
Remote Jabber. Output goes High to indicate the remote port is in Jabber
condition.
Polarity Reverse. Output goes High to indicate reversed polarity at the twisted-
pair input.
Twisted-Pair Transmit Pairs A & B. Two differential driver pair outputs (A and B)
to the twisted-pair cable. The outputs are pre-equalized. Each pair must be
shorted together and tied to the transformer with a 24.9
match impedance of 100 .
Refer to
configurations.
STP Select (LXT901 only).
When STP is Low, 150
When STP is High, 100
LXT907 is designed for 100
Disable SQE (LXT907 only).
When DSQE is High, the SQE function is disabled.
When DSQE is Low, the SQE function is enabled.
SQE must be disabled for normal operation in Hub/Switch applications.
LXT901operates with SQE enabled (not selectable).
Twisted-Pair Receive Pair. A differential input pair from the twisted-pair cable.
Receive filter is integrated on-chip. No external filters are required.
Port/AUI Select. In Manual Port Select mode (AUTOSEL Low), PAUI selects the
active port.
When PAUI is High, the AUI port is selected.
When PAUI is Low, the twisted-pair port is selected.
In Auto Port Select mode, PAUI must be tied to ground.
Figure 16
in the Applications Section for information on 150
termination for shielded twisted-pair is selected.
termination for unshielded twisted-pair is selected.
1% resistor to ground at this pin controls operating
UTP termination (not selectable).
Description
CC
.
1% series resistor to
Rev. Date: June 19, 2001
Document #: 249097
Revision #: 002
Datasheet