参数资料
型号: WJLXT908LC.A4
厂商: INTEL CORP
元件分类: 网络接口
英文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP64
封装: ROHS COMPLIANT, LQFP-64
文件页数: 14/46页
文件大小: 618K
代理商: WJLXT908LC.A4
Intel
LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver
Datasheet
21
Document #: 249049
Revision #: 003
Rev. Date: 29-Oct-2005
3.2.2
Full Duplex Support
Figure 10 shows the Intel
LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver with a Texas
Instruments 380C24 CommProcessor. The 380C24 is compatible with Mode 4 (MD2:0 = Low,
High, High). When used with the 380C24 or other full- duplex-capable controllers, the Intel
LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver supports full-duplex Ethernet,
effectively doubling the available bandwidth of the network. In this application, the SQE function
is enabled (DSQE tied Low), and the Intel LXT908 Universal 3.3 V 10BASE-T and AUI
Transceiver AUI port is not used.
Figure 10. Full-Duplex Operation
3
LX
T908
CLKI
TXD
TPIN
100
Ω
TPIP
1 : 1
116
14
6
5
4
3
2
1
11
9
RJ45
3
6
8
CIN
CIP
DON
DOP
DIN
DIP
RBIAS
GND2
GND1
TEN
12.4 k
Ω
TCLK
RCLK
RXD
CD
COL
LBK
LEDC/FDE
TXD
TXEN
TXC
RXC
RXD
CSN
COLL
LPBK
1 %
+3.3 V
VCC1
VCC2
CLKO
TMS380C24
1 : 2
T
o
1
0
BA
SE-
T
W
IS
T
E
D
-
P
A
IR
NE
T
W
O
R
K
20 MHz
20 pF
*TEST0
1N914
10 K
Ω
AUTOSEL
NTH
LI
MD2
MD1
MD0
JAB
PLR
Green Red
Red
PROGRAMMING
OPTIONS
MODE
SELECT
LINE STATUS
LEDR
LEDT/PDN
LEDL
330
OUTSEL0
PAUI
330
1
4.7 K
Ω
TEST
DSQE
*Open Collector
Driver
TPONA
TPONB
TPOPA
TPOPB
11.5
Ω 1%
11.5
Ω 1%
PAUI
1
Half/Full Duplex Selection controlled by TMS380C24 Pins
Test0 and OUTSEL0.
Bias resistor RBIAS should be located close to the pin
and isolated from other signals.
2
3
The TMS380C26 may be substituted for dual network
support of 10BASE-T and Token Ring.
2
220pF
0.1
μF
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