5-1
Themis Computer
5
Programmable Logic Device
5.1
Introduction
The Programmable Logic Device or PLD resides on the Ebus of the Sun Rio I/O
Controller on the USPII
e
-USB Baseboard (see
Figure 2-1
on page 2-2). It provides
the following functions:
• Implements the reset logic of the USPII
e
-USB
• Implements an extensive boot address decoder and mapping control of the
flashes
• Provides miscellaneous registers to control the behavior of the USPII
e
-USB
• Implements a 2-level Watchdog
• Implements power management and thermal management
• Implements miscellaneous features like:
a.
VME slot-ID detection
b.
VME sysreset management
Operation
Section
Chapter
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