参数资料
型号: WJLXT907ALCA4
厂商: CORTINA SYSTEMS INC
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: 14/48页
文件大小: 621K
代理商: WJLXT907ALCA4
Intel
LXT901A/907A Universal 3.3 V Ethernet Transceiver
Datasheet
21
Document Number: 249098
Revision Number: 003
Revision Date: 27-Nov-2005
Figure 9. LAN Adapter Board - Auto Port Select with External LPBK Contro
l
LXT
901A/
907
A
20 MHz
20 pF
CLKI
TXD
TPIN
50
Ω
50
Ω
TPIP
1 : 1
116
14
6
5
4
3
2
1
11
0.1
μF
9
RJ45
3
6
8
T
o
1
0
BASE-
T
W
IS
T
E
D
-
PAI
R
N
E
T
W
O
R
K
1
2
4
5
7
89
10
12
13
15
16
1
2
3
4
5
6
7
8
15
14
13
12
9
10
11
+ 12 V
CIN
CIP
DON
DOP
DIN
DIP
RBIAS
GND2
GND1
TEN
D
-
C
O
NN
E
C
T
O
R
t
o
A
U
IDRO
P
CA
B
L
E
Chassis
Gnd
Fuse
78
Ω
78
Ω
78
Ω
12.4 k
Ω
TCLK
RCLK
RXD
CD
COL
LBK
PAUI
AUTOSEL
NTH
MD0
MD1
DSQE (907A)
STP (901A)
LI
JAB
PLR
TXD
TXE
TXC
RXC
RXD
CRS
COL
LBK
Green Red
Red
NS8390 BACK-END
CONTROLLER
INTERFACE
LOOPBACK
ENABLE
PROGRAMMING
OPTIONS
LINE STATUS
1 %
+3.3 V
LEDC/FDE
LEDR
LEDT/PDN
LEDL
VCC1
VCC2
CLKO
330
TEST
TPONA
TPONB
TPOPA
TPOPB
24.9
Ω 1%
24.9
Ω 1%
Bias resistor RBIAS should be located close to the pin and isolated from other signals.
Optional: Centertap capacitor may improve EMC depending on board layout and system design.
2
1
2
1
1 : 1
1 : 2
1 : 1
0.1
μF
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