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: 15/46页
文件大小: 618K
代理商: WJLXT908LC.A4
Intel
LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver
22
Datasheet
Document #: 249049
Revision #: 003
Rev. Date: 29-Oct-2005
3.2.3
Dual Network Support-10Base T and Token Ring
Figure 11 shows the Intel
LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver with a Texas
Instruments 380C26 CommProcessor. The 380C26 is compatible with Mode 4 (MD2:0 = Low,
High, High).
When used with the 380C26, both the Intel LXT908 Universal 3.3 V 10BASE-T and AUI
Transceiver and a TMS38054 Token Ring transceiver can be tied to a single RJ-45, allowing dual
network support from a single connector. The Intel
LXT908 Universal 3.3 V 10BASE-T and AUI
Transceiver AUI port is not used.
Figure 11. Intel
LXT908 Transceiver/380C26 Interface for Dual Network Support of 10BASE-T
and Token Ring
LX
T908
20 MHz
20 pF
CLKI
TXD
TPIN
100
Ω
TPIP
1 : 1
116
14
6
5
4
3
2
1
11
18 pF
9
TPONA
TPONB
TPOPB
TPOPA
RJ45
3
6
8
From TI TMS38054 Token
Ring Transceiver
CIN
CIP
DON
DOP
DIN
DIP
RBIAS
GND2
GND1
TEN
1
12.4 k
Ω
TCLK
RCLK
RXD
CD
COL
LBK
PAUI
AUTOSEL
NTH
DSQE
LI
MD2
MD1
MD0
JAB
PLR
TXD
TXE
TXC
RXC
RXD
CRS
COL
LBK
Green Red
Red
PROGRAMMING
OPTIONS
MODE SELECT
LINE STATUS
1 %
+3.3 V
LEDC/FDE
LEDR
LEDT/PDN
LEDL
VCC1
VCC2
CLKO
330
380C26
2
To TI TMS38054 Token Ring
Transceiver
1 : 2
To
1
0
B
A
S
E
-T
TW
IS
TE
D
-
P
A
IR
NE
T
W
O
R
K
Bias resistor RBIAS should be located close to the pin
and isolated from other signals.
1
2
Additional magnetics and switching logic (not shown)
is required to implement the dual network solution.
TEST
11.5
Ω 1%
11.5
Ω 1%
220pF
0.1
μF
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