ZT5515A-1BW Intel, ZT5515A-1BW Datasheet - Page 14

• Manufacturer Part Number: ZT5515A-1BW
• Manufacturer: Intel

Specifications of ZT5515A-1BW

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Introduction
2.3.4
2.3.5
2.3.6
14
Table 1.
PCI-to-PCI Bridge (Not supported)
The ZT 5515 does have an on-board PCI bus, but does not have a CompactPCI bridge to the
backplane. The ZT 5515 still has the J1/J2 connectors in order to support other requirements for the
board such as power and the IPMI bus.
Memory and I/O Addressing
The ZT 5515 supports 256 Mbyte, 512 Mbyte or 1 Gbyte of socketed ECC DDR SDRAM
memory. Memory does not come with the ZT 5515 and must be installed by a customer or by a
distribution center. ECC will correct single bit errors (97 percent of all DRAM errors are single bit
errors) and can report multiple bit errors to the operating system. How ECC errors are reported is a
BIOS setup option.
In addition to SDRAM, the ZT 5515 provides 16 Mbyte of on-board flash memory. The system
BIOS uses 1 Mbyte of this flash, the other 15 Mbyte are free for user configuration.
For more information, see
“Getting Started.”
Power Ramp Circuitry
The ZT 5515 features a power controller with power ramp circuitry that allows the board's voltages
to be ramped in a controlled fashion. The power ramp circuitry eliminates large voltage or current
spikes caused by hot swapping boards. This controlled ramping is a requirement of the
CompactPCI Hot Swap Specification, PICMG 2.1, Version 1.0 (see
page
The ZT 5515's power controller unconditionally resets the board when it detects that the 3.3 V, 5 V,
and 12 V supplies are below an acceptable operating limit. Minimum voltage thresholds for the
ZT 5515 are: 4.75 V (5 V supply), 3.0 V (3.3 V supply), and 10.0 V (+12 V supply).
Fault current sensing is also provided. If a board fault (short circuit) or over-current condition is
detected, the power controller removes power from the ZT 5515's components and the Health LED
on the faceplate turns amber. Fault protection activates if the current exceeds the threshold for
greater than 50µs. The ZT 5515's fault current limits are shown in the following table.
Fault Current Limits
+5.0 V
+3.3 V
+12 V
-12 V
Intel
Power Source
83).
®
NetStructure
10.0 A
9.4 A
1.0 A
0.6 A
TM
Minimum
ZT 5515 Compute Processor Board Technical Product Specification
“Memory Configuration”
15.0 A
14.1 A
1.5 A
0.9 A
Maximum
and
“I/O Configuration”
Section D.1, “CompactPCI” on
in
Chapter 3,