AcroPack Series APCe7012E-LF
PCI Express Carrier Board
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DC/DC Converter
The APCe7012E-LF has three DC/DC converters to provide the power supply
voltages to the AcroPack modules that are not present at the host interface.
The +1.5 Volt supply is sourced from the +3.3 Volt host power. The +5 Volt
and -12 Volt supply is sourced from +12 Volt host power.
Slot Addressing
The APCe7012E-LF carrier can be assigned a slot address by selecting the
appropriate combination of switch settings. The slot address is 8 bits long and
consists of 3 bits to identify the site on the carrier where the AcroPack
module is installed (not used on this single slot AcroPack carrier) and 5 bits
that are determined by the switch settings on the carrier. The CPLD will
serialize the slot address and transmit the address to the AcroPack module as
requested by the AcroPack module. The processes of reading the slot address
is typically initiated by host software. See CARRIER ADDRESS ASSIGNMENT in
section 2 for details regarding slot address selection.
JTAG
A JTAG interface is provided for programming and debugging FPGAs on
AcroPack modules. It is intended to be used with a Xilinx Platform USB II
programming device. The slot address CPLD is also included in the JTAG chain
for factory programming.
Power Supply Fuses
The power supplies are individually fused. A blown fuse can be identified by
visible inspection or by use of an ohm meter. The location of the fuses are
shown in
Error! Reference source not found.
. Fuses corresponding to each
voltage are listed in section 2. The current rating for each of the fuses is listed
in the Fuses paragraph in section 6.
