2
Rev A
DEMO MANUAL DC2685B
QUICK START PROCEDURE
Follow the quick start procedure below for basic operation
of the DC2685B kit. Refer to Figure 1 through Figure 3
and Table 1 through Table 4 for proper equipment setup.
1. On the DC2684A-B daughter card set AUTO jumper
JP1 (Figure 1) to a selected AUTO mode setting
shown in Table 1.
2. On the DC2684A-B daughter card set 4PV# jumper
JP2 (Figure 1) to a selected 4-Pair Valid setting as
shown in Table 1.
3. On the DC2684A-B daughter card set PM1 jumper
JP4 and PM0 jumper JP3 (Figure 1) to the power
mode for evaluation specified in Table 2.
4. Align pin 1 of the 30-pin male connector on the
DC2684A-B daughter card with pin 1 of the 30-pin
female connector on the DC2683A motherboard
as shown in Figure 2. Pin 12 is polarized to assist
with the alignment. Carefully push the daughter card
straight down until the male and female 30-pin con-
nectors are flush with each other.
5. Connect a supply to the motherboard with the posi-
tive rail to AGND (+) and negative rail to V
EE
(–) as
shown in Figure 3. Use a power supply capable of
sourcing the maximum delivered power for all four
ports set by JP3 and JP4 on the daughter card (or
I
2
C configured power). Ramp the supply up to within
the recommended voltage range specified in Table 3.
6. Set the LTC4291-1/LTC4292 I
2
C address switch SW1
on the motherboard to the one of the four addresses
shown in Table 4.
7. On the DC590, set the VCCIO jumper JP6 to 3.3V.
(Refer to Table 5 and the DC590 demo manual for
further instructions for the DC590.)
8. Connect the DC590 to the DC2683A at connector J6
with a 14-pin ribbon cable as shown in Figure 3 and
open the QuikEval GUI. A GUI for the LTC4291-1/
LTC4292 is brought up by QuikEval. (Follow the
DC590 demo manual instructions if this has not been
previously setup.)
9. Connect up to four PDs to the DC2685B RJ45 con-
nector J1, bottom row ports 1-4 as shown in Figure
3.
10. Optionally a 1000BASE-T data source may be con-
nected to the DC2685B RJ45 connector J1, top row
ports 1-4 for data pass through testing.
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