EELXT901APC.A4-872161 Cortina Systems Inc, EELXT901APC.A4-872161 Datasheet - Page 26

• Manufacturer Part Number: EELXT901APC.A4-872161
• Manufacturer: Cortina Systems Inc

Specifications of EELXT901APC.A4-872161

• Lead Free Status / RoHS Status: Compliant

LXT901/907 — Universal 10BASE-T and AUI Transceivers
3.4.4
26
Figure 12. LAN Adapter Board - Manual Port Select with Link Test Function
Amber
MB86950 or MB86960
330
PROGRAMMING
Manual Port Select with Link Test Function
With MD0 tied Low and MD1 tied High, the LXT901/907 logic and framing are set to Mode 3
(compatible with Fujitsu MB86950 and MB86960, and Seeq 8005 controllers).
the setup for Fujitsu controllers.
with the Seeq 8005 controller. As in
LI pin tied High, enabling Link Testing; and the STP (LXT901 only) and NTH pins are both tied
High, selecting the standard receiver threshold and 100 termination for unshielded twisted-pair
cable. However, in these applications, AUTOSEL is tied Low, allowing external port selection
through the PAUI pin. The remote status outputs are inverted to drive LED indicators.
Green
CONTROLLER
REMOTE & LINE
330
OPTIONS
INTERFACE
BACK-END/
Amber
330
2
1
STATUS
Port Selection
Red
Bias resistor RBIAS should be located close to the pin and isolated from other signals.
330
Amber
Optional: Centertap capacitor may improve EMC depending on board layout and system design.
330
Red
+5 V
330
0.1 F
Red
330
TCKN
RCKN
RXD
XCD
XCOL
LBC
TXD
TEN
20 pF
TEST
PAUI
LI
TXD
TEN
TCLK
RCLK
RXD
CD
COL
LBK
AUTOSEL
NTH
MD0
MD1
DSQE (907)
STP (901)
RJAB
RLD
RCMPT
JAB
PLR
LEDC/FDE
LEDR
LEDT/PDN
LEDL
VCC1
VCC2
CLKI
20 MHz
Figure 13 on page 27
CLKO
Figure 9 on page
20 pF
GND1
TPONB
TPONA
TPOPA
TPOPB
RBIAS
GND2
TPIN
TPIP
DON
DOP
CIN
CIP
DIN
DIP
12.4 k
78
78
78
1 %
1
24.9
24.9
0.1 F
50
50
5
7
8
1
2
4
2
shows the four inverters required to interface
23, both these Mode 3 applications show the
1 : 1
1 : 1
1
15
16
13
12
10
3
6
8
9
1 : 1
1 : 2
16
14
11
9
Chassis
10
11
12
13
14
15
9
Gnd
1
2
3
4
5
6
7
8
RJ45
6
5
4
3
2
1
Rev. Date: June 19, 2001
+ 12 V
Figure 12
Fuse
Document #: 249097
Revision #: 002
Datasheet
shows