參數(shù)資料
型號(hào)： LXD974A
英文描述： LXD974A - LXD974A Demo Board for 10/100 Applications
中文描述： LXD974A - LXD974A演示板的10/100應(yīng)用
文件頁數(shù)： 13/14頁
文件大?。?/td> 243K
代理商： LXD974A
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)
Tristates
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
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