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Intel
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LXD972M Transceiver Demo Board (Board Rev A1)
Preliminary User’s Guide 9
Document Number: 303125
Revision Number: 002
Revision Date: October 22, 2004
2.3 Quick-Start Checklists
Use the quick-start checklists in this section to set up the LXD972M Demo Board, shown in Figure
2, “Intel
®
LXD972M Transceiver Demo Board” on page 10.
The following quick-start setup procedure sets all ports to the default condition, which includes
Auto-Negotiation enabled, advertising dual-speed, and full-duplex/half-duplex capabilities.
1. Set the jumpers as listed in Table 2.
The following jumpers are defined as follows: LED1 has the functionality of LED/CFG1,
LED2 has the functionality of LED/CFG2, and CFG has the functionality of LED/CFG3 as
defined by the LXT972M Transceiver datasheet.
2. Set SW1 switches as listed in Table 3.
3. Connect the MII port of the LXD972M Demo Board to the Smartbits test box through the MII
connector/cable. A male-to-male cable is required to interface the Smartbits test box to the
LXD972M Demo Board and is available from Newark* (.5m cable - Newark 91F9746).
4. Connect the twisted-pair port through a Twisted-Pair crossover cable to the RJ-45 card in the
SmartBits test box.
5. Power up the Smartbits test box.
6. When the LXD972M Demo Board is configured according to desired test settings, apply the
desired power connections per Table 4 options in Section 2.4.2, “Power Supply Voltage Source
and Clock Options” on page 12 and press Reset switch S2.
7. Proceed with testing.
Table 2. Quick-Start Checklist for Jumper Settings
Jumper Label Setting Configuration
JP1,
JP2,
JP3
LED1,
LED2,
CFG
Pins 1, 2 Jumper
"Sets Port Configuration to 111 for Auto-Negotiation,
10/100 Mbps, Full-Duplex. For details, see Section
2.4.5, “CFG Pin Configuration Options” on page 14.
JP12 VCCA Jumpered
Routes power from VCCD connector (BN4) through
JP12 to the VCCA input.
JP16 MDIO Pins 2, 3 Jumper Routes MDIO through MII 40-pin Connector P1.
JP17 MDC Pins 2, 3 Jumper Routes MDC through MII 40-pin Connector P1.
JP18 Clock Select
Pins 1, 2 Open Disables output of clock oscillator Y2.
Pins 3, 4
Pins 5, 6
Jumper
Jumper
Connects crystal across XI and XO to enable Y1.
JP19 Reset Pins 1,2 Jumper Connects reset button
Table 3. Quick-Start Checklist for Switch Settings
Switch / Label Setting Configuration
SW1-1 / ID EN Off Not applicable for LXT972M Transceiver.
SW1-2 / ADDR0 Off Sets ADDR0 = 0 (“Off” position)
SW1-3 / ADDR1 Off Sets ADDR1 = 0 (“Off” position)
SW1-4 / LINKHOLD / RBIAS Off Not applicable for LXT972M Transceiver.