ZT8101 Intel (CPU), ZT8101 Datasheet - Page 46

• Manufacturer Part Number: ZT8101
• Manufacturer: Intel (CPU)

Specifications of ZT8101

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Hardware
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CompactPCI
The ZT 8101 switch complies with PICMG 2.1 Hot Swap specification for insertion and removal
of the ZT 8101 board.
The ZT 8101 slot in the chassis will have the BD_SEL# pin grounded. When the ZT 8101 switch is
inserted, the hot swap power controller will wait until BD_SEL# is grounded and backplane power
has stabilized before ramping up main power to ZT 8101. If backplane power becomes unstable or
BD_SEL# goes high, the hot swap power controller will turn off main power to the ZT 8101
switch.
A CPLD is used to control the hot swap LED, and reset to the board. See the Hot Swap section for
details on the hot swap logic.
The blue LED will be on at any time it is safe to remove the ZT 8101 switch.
Power Controller
The hot swap power controller chip is used to ramp voltages and watch for over current. If over
current is detected, main power to the ZT 8101 switch will be terminated. Over current is defined
as 50 percent over spec.
A time constant of 100uS is used on startup to prevent any surges.
The ZT 8101 switch has a Hot Swap Shield on the back of the board to protect the circuits.
The hot swap power controller chip is a LTC1421 chip.
Regulators
The ZT 8101 switch generates the on board voltages from both 3.3 V and 5 V.
A switching regulator generates 2.5 V (for two Octal Phy) and 1.8 V (switch engine) from the 5 V.
Several LDO regulators generate the 2.5 V needed for the CPU core, 10/100/1000 and Octal Phy.
The switching regulator is a RT-9226B. The 2.5 V LDO regulator is a CS-5253.
Embedded Controller
The ZT 8101 switch uses the TX-3927 RISC CPU.
Ethernet
The ZT 8101 switch utilizes a single chip Ethernet switch controller solution that has 24 10/100
ports and 2 GbE ports.
Intel
®
NetStructure
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ZT 8101 10/100 Ethernet Switch Technical Product Specification