Turbo PMAC2 Hardware Reference Manual
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Option 5C2 provides an 80 MHz CPU (120 MHz PMAC equivalent), an expanded 512k x 24
of compiled/assembled program memory, 128k x 24 of user data memory, and a 2M x 8 flash
memory.
Option 5C3 provides an 80 MHz CPU (120 MHz PMAC equivalent), an expanded 512k x 24
of compiled/assembled program memory, an expanded 512k x 24 of user data memory, and a
4M x 8 flash memory.
Option 7: Plate Mounting
Option 7 provides a mounting plate connected to the PMAC with standoffs. It is used to
install the PMAC in standalone applications.
Option 8: High-Accuracy Clock Crystal
The Turbo PMAC2-PC Ultralite has a clock crystal (component Y1) of nominal frequency
19.6608 MHz (~20 MHz). The standard crystal’s accuracy specification is +/-100 ppm.
Option 8A provides a nominal 19.6608 MHz crystal with a +/-15 ppm accuracy specification.
Option 9: Auxiliary Serial Port
The Turbo PMAC2-PC Ultralite comes standard with a single serial port, configurable as RS-232
or RS-422. Optionally a second serial port can be added.
Option 9T adds an auxiliary RS-232 port in the CPU section.
Option 10: Firmware Version Specification
Normally the Turbo PMAC2-PC Ultralite is provided with the newest released firmware version.
A label on the U10 flash memory IC shows the firmware version loaded at the factory.
Option 10 provides for a user-specified firmware version.
Option 12: Analog-to-Digital Converters
Option 12 permits the installation of 8 or 16 channels of on-board multiplexed analog-to-digital
converters. 1 or 2 of these converters are read every phase interrupt. The analog inputs are not
optically isolated, and each can have a 0 – 5V input range, or a +/-2.5V input range, individually
selectable.
Option 12 provides an 8-channel 12-bit A/D converter. The key components on the board are
U24 and connector J1.
Option 12A provides an additional 8-channel 12-bit A/D converter. The key component on
the board is U25.
Option 16: Battery-Backed Parameter Memory
The contents of the standard memory are not retained through a power-down or reset unless they
have been saved to flash memory first. Option 16 provides supplemental battery-backed RAM
for real-time parameter storage that is ideal for holding machine state parameters in case of an
unexpected power-down. The battery is located at component BT1.
Option 16A provides a 32k x 24 bank of battery-backed parameter RAM in components U17,
U18, and U19, fitting in the smaller footprint for those locations.
Option 16B provides a 128k x 24 bank of battery-backed parameter RAM in components
U17, U18, and U19, filling the full footprint for those locations.
Introduction
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