Demo Board for 10/100 and 100BASE-FX Applications — LXD970A

Development Kit Manual 13

4.1.2 Additional Jumper Functions

In addition to the MF pins, the Hardware Control Interface (JP1) contains 10 pins, (#41 - #50) that

are labeled as MAN0, MAN1, MAN2, TRSTE and MDDIS, (Note: TRSTE and MDDIS are not

labeled on the demo board). MAN0 = CFG0, MAN1 = FDE and MAN2 = CFG1. The Manual pins

control the status of the applicable function by installing or removing a jumper. See Table 6 for

function status.

4.2 LED Indicators

There are 5 status LEDs on the Demo Board. Refer to Table 7 for LED descriptions.

Table 6. Additional JP1 Jumper Functions

Jumper Label Function Status Jumper
Installed Jumper Not
Installed
MAN0
(CFG0)
Restart Negotiation
(when Auto-Neg enabled)1
Enable X
Disable X
Speed Select
(when Auto-Neg disabled)1
10Mbps X
100Mbps X
MAN1
(FDE) Full Duplex Enable X
Disable X
MAN2
(CFG1)
Speed Advertisement Capabilities
(when Auto-Neg enabled)1
When Auto-Neg enabled, MAN2 (CFG1) works in
combination with MF4 to control operating speed
advertising capabilities. See Table 5 for details
Link Test
(when Auto-Neg disabled)1
Enable X
Disable X
Not Labeled
(TRSTE)
Tristate
(MDC and MDIO are not affected)
Tristate s
MII Data Interface X
Normal
Operation X
Not Labeled
(MDDIS) MDIO Port Enable X
Disable X
1. Auto-negotiation is set via MF0.

Table 7. LED Descriptions

Label Ref Des Description
ENBL D1 Line Speed. Indicates 100Mbps operation
COL D2 Collision. Indicates collision
LNK D3 Link. Indicates connection
TX D4 Transmit Data. Indicates data being transmitted
RX D5 Receive Data. Indicates data being received