IXB28504XGBEFS Intel, IXB28504XGBEFS Datasheet - Page 38

• Manufacturer Part Number: IXB28504XGBEFS
• Manufacturer: Intel

Specifications of IXB28504XGBEFS

• Lead Free Status / Rohs Status: Compliant

4.4.1
Table 4.
4.4.2
4.4.2.1
4.4.2.2
4.4.2.3
Intel NetStructure
TPS
38
®
Staged Power Connection to the Chassis
IXB2850 baseboard connection to the chassis consists of pins with four different
lengths. With this design, board connection and disconnection are carried out in three
stages as described in
“Board Removal” on page
Table 4
connection sequence.
Power connector pins and mating sequence
Board Insertion
Board insertion consists of four stages (the sequential contact of three groups of pins
and the closing of the board clamp) as outlined in the subsections below.
Long Pins Contact
Medium Pins Contact
Short Pins Contact
Designation
-48V_A
-48V_B
VRTN_A
VRTN_B
-48V_EARLY_A
-48V_EARLY_B
SHORT_PIN_A
SHORT_PIN_B
LOGIC_GND
CHASSIS_GND
• ESD and static electricity are discharged to the chassis ground.
• The local board ground is connected to the main logic ground.
• The -48 volt early power supply and -48 volt ground are connected to the board.
• The main power is fed to the board.
• The -48V_A pin and the -48V_B pin are mated at different times.
• The local power supply is enabled. The VRTN_MLBF_A pin and the VRTN_MLBF_B
• If the -48 volt supply is operational, the MAX5900 hot-swap controller is started by
• The BMC local system is started.
• The blue LED is on.
IXB2850 Packet Processing Boards
This connection makes it possible to pre-charge input capacitance.
pin are mated at the same time.
the BMC power supply.
lists the power circuit pins of the board power connector (Zone 1) and their
Relative Contact
Length
Medium Long
Medium Short
Long
Long
Long
Long
Short
Short
Long
Long
Section 4.4.2, “Board Insertion” on page 38
39.
Mating
Sequence
Second
Third
First
First
First
First
Last
Last
First
First
Description
-48 volt input, feed A
-48 volt input, feed B
-48 volt return, feed A
-48 volt return, feed B
-48 volt input, feed A pre-charge
-48 volt input, feed B pre-charge
Enables DC to DC converter, feed A
Enables DC to DC converter, feed B
Ground reference for card logic
Ground to shielding mechanics and filters
IXB2850—Hardware Management
Document Number: 05-2443-006
and
Section 4.4.3,
January 2007