EELXT907APC.A4-871623 Cortina Systems Inc, EELXT907APC.A4-871623 Datasheet - Page 24

• Manufacturer Part Number: EELXT907APC.A4-871623
• Manufacturer: Cortina Systems Inc

Specifications of EELXT907APC.A4-871623

• Lead Free Status / RoHS Status: Compliant

LXT901/907 — Universal 10BASE-T and AUI Transceivers
3.4.2
24
Figure 10. Full-Duplex Operation
*Open Collector
TMS380C24
3
OUTSEL0
PROGRAMMING
Driver
LINE STATUS
*TEST0
Full-Duplex Support
Figure 10
compatible with Mode 4 (MD0 and MD1 both High). When used with the 380C24 or other full-
duplex-capable controllers, the LXT907 supports full-duplex Ethernet, effectively doubling the
available bandwidth of the network. In this application, the SQE function is enabled (DSQE is tied
Low) and the AUI port is not used.
OPTIONS
REMOTE
STATUS
TXEN
COLL
LPBK
330
Green Red Red
RXC
RXD
TXD
TXC
CSN
+5 V
330
0.1 F
shows the LXT907 with a Texas Instruments 380C24 CommProcessor. The 380C24 is
1N914
1
330
4.7 K
10 K
20 pF
TEST
AUTOSEL
LI
DSQE (907)
RJAB
RLD
RCMPT
TXD
TEN
TCLK
RCLK
RXD
CD
COL
LBK
LEDC/FDE
NTH
MD0
MD1
JAB
PLR
PAUI
LEDR
LEDT/PDN
LEDL
VCC1
VCC2
CLKI
20 MHz
CLKO
GND1
20 pF
TPONB
TPOPA
TPONA
TPOPB
RBIAS
GND2
TPIN
TPIP
DOP
DON
CIN
CIP
DIN
DIP
12.4 k
2
24.9
24.9
1
2
4
3
0.1 F
50
50
The TMS380C26 may be substituted for dual network
support of 10BASE-T and Token Ring.
Optional: Centertap capacitor may improve EMC
depending on board layout and system design.
Bias resistor RBIAS should be located close to the pin
and isolated from other signals.
Half/Full Duplex Selection controlled by TMS380C24 Pins
Test0 and OUTSEL0.
4
1 %
1
3
6
8
1 : 2
1 : 1
16
14
11
9
RJ45
6
5
4
3
2
1
Rev. Date: June 19, 2001
Document #: 249097
Revision #: 002
Datasheet