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DESCRIPTION
Demonstration circuit 2685B-KIT is an Ethernet Alliance
Gen 2 PoE certified 4-port IEEE 802.3bt power sourcing
equipment (PSE) composed of a DC2684A-B (daugh-
ter card) and DC2683A (motherboard). The DC2685B-
KIT is used for evaluation of the
PSE chipset. Up to four IEEE 802.3af, IEEE 802.3at, or
IEEE 802.3bt powered devices (PDs) can be connected
BOARD PHOTO
LTC
4291-1/LTC4292
®
DEMO MANUAL
DC2683A and DC2684A-B
LTC4291-1/LTC4292
4-Port IEEE 802.3bt PSE
and powered from this system using a single power sup-
ply. A DC590 is connected to the DC2685B-KITfor I
interfacing with QuikEval™.
This demonstration manual provides a quick start proce-
dure, a DC2684A-B daughter card overview, a DC2683A
mother board overview, schematics, and layout printouts.
Design files for this circuit board are available.
All registered trademarks and trademarks are the property of their respective owners.
DC2685B-KIT
2
Rev. B
1
C
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Related Manuals for Analog Devices DC2685B-KIT
Summary of Contents for Analog Devices DC2685B-KIT
- Page 1 DEMO MANUAL DC2685B-KIT DC2683A and DC2684A-B LTC4291-1/LTC4292 4-Port IEEE 802.3bt PSE DESCRIPTION Demonstration circuit 2685B-KIT is an Ethernet Alliance and powered from this system using a single power sup- Gen 2 PoE certified 4-port IEEE 802.3bt power sourcing ply. A DC590 is connected to the DC2685B-KITfor I equipment (PSE) composed of a DC2684A-B (daugh- interfacing with QuikEval™.
-
Page 2: Quick Start Procedure
Figure 2. Pin 12 is polarized to assist with the alignment. Carefully push the daughter card 9. Connect up to four PDs to the DC2685B-KIT RJ45 straight down until the male and female 30-pin con- connector J1, bottom row ports 1-4 as shown in nectors are flush with each other. - Page 3 DEMO MANUAL DC2685B-KIT QUICK START PROCEDURE Figure 1. DC2684A-B Jumpers: AUTO, 4PV#, PM0 and PM1 Figure 2. Inserting the DC2684A-B Daughter Card Into J7 of the DC2683A Motherboard Rev. B...
- Page 4 DEMO MANUAL DC2685B-KIT QUICK START PROCEDURE Table 1. DC2684A-B AUTO and 4PV# Jumper Settings Table 3. DC2685B-KIT Power Supply Voltage Range per PSE Type JUMPER SETTING OPERATION IEEE TYPE Supply Voltage Range AUTO (JP1) Host Control Required Type 3 51V to 57V...
- Page 5 DEMO MANUAL DC2685B-KIT DEMONSTRATION CIRCUIT 2684A-B DAUGHTER CARD Demonstration circuit 2684A-B is an IEEE 802.3bt 8-chan- LTC4292 data sheet. The DC2684A-B demonstrates nel PSE daughter card that features the LTC4291-1/ proper LTC4291-1/LTC4292 board layout on a compact LTC4292 chipset. This daughter card mates with a 4-Port, daughter card approximately the height and width of a 2 4-Pair PoE motherboard for use in IEEE 802.3bt Type 3 or...
- Page 6 DEMO MANUAL DC2685B-KIT DEMONSTRATION CIRCUIT 2684A-B DAUGHTER CARD I/O LED Indicators The DC2684A-B features two LEDs to indicate the states SDAOUT SDAOUT of the LTC4291-1/LTC4292 general purpose input/output SDAIN SDAIN pins GP0 and GP1. These pins are configured as inputs or outputs via I C.
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Page 7: Demonstration Circuit 2683A Mother Board
3.3V supply across V Pushbutton switch SW2, when pressed, pulls the mas- DGND. If the DC2685B-KIT is connected in parallel for kable shutdown input (MSD) pin of the daughter card multi-quad port evaluation, verify all ground connections logic low. - Page 8 DEMO MANUAL DC2685B-KIT SUPPLEMENTARY Table 5. DC590 Jumper Selection. Refer to the DC590 Demo Manual for Further Details. JUMPER SETTING OPERATION PROG Microcontroller in-circuit programming header. Do NOT install jumper; make no connections. MODE Do NOT install jumper; make no connections.
- Page 9 DEMO MANUAL DC2685B-KIT DC2684A-B DAUGHTER CARD LAYOUT FILES Figure 7. DC2684A-B Top Silkscreen Figure 8. DC2684A-B Top Layer Rev. B...
- Page 10 DEMO MANUAL DC2685B-KIT DC2684A-B DAUGHTER CARD LAYOUT FILES Figure 9. DC2684A-B Inner Layer 2 Figure 10. DC2684A-B Inner Layer 3 Rev. B...
- Page 11 DEMO MANUAL DC2685B-KIT DC2684A-B DAUGHTER CARD LAYOUT FILES Figure 11. DC2684A-B Bottom Layer Figure 12. DC2684A-B Bottom Silkscreen Rev. B...
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Page 12: Dc2683A Mother Board Layout Files
DEMO MANUAL DC2685B-KIT DC2683A MOTHER BOARD LAYOUT FILES Figure 13. DC2683A Top Silkscreen Rev. B... - Page 13 DEMO MANUAL DC2685B-KIT DC2683A MOTHER BOARD LAYOUT FILES Figure 14. DC2683A Top Layer Rev. B...
- Page 14 DEMO MANUAL DC2685B-KIT DC2683A MOTHER BOARD LAYOUT FILES Figure 15. DC2683A Inner Layer 2 Rev. B...
- Page 15 DEMO MANUAL DC2685B-KIT DC2683A MOTHER BOARD LAYOUT FILES Figure 16. DC2683A Inner Layer 3 Rev. B...
- Page 16 DEMO MANUAL DC2685B-KIT DC2683A MOTHER BOARD LAYOUT FILES Figure 17. DC2683A Bottom Layer Rev. B...
- Page 17 DEMO MANUAL DC2685B-KIT DC2683A MOTHER BOARD LAYOUT FILES Figure 18. DC2683A Bottom Silkscreen Rev. B...
- Page 18 DEMO MANUAL DC2685B-KIT DC2684A-B DAUGHTER CARD SCHEMATIC Rev. B...
- Page 19 DEMO MANUAL DC2685B-KIT DC2684A-B DAUGHTER CARD SCHEMATIC Rev. B...
- Page 20 DEMO MANUAL DC2685B-KIT DC2683A MOTHERBOARD SCHEMATIC Rev. B...
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Page 21: Dc2683A Motherboard Schematic
Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. - Page 22 Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY.
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