UMAC-CPCI Turbo CPU Board Hardware Reference Manual
4 Board Configuration
The flash memory IC is located in U10. This IC forms the non-volatile memory for the board’s firmware,
the user setup variables, and for user programs, tables, and buffers. It can be 1M x 8, 2M x 8, or 4M x 8
in capacity.
• Option 5C0 is the standard CPU and memory configuration. It is provided automatically if no Option
5xx is specified. It provides an 80 MHz DSP56303 CPU (120 MHz PMAC equivalent) with 8k x 24
of internal memory, an external 128k x 24 of compiled/assembled program memory, an external 128k
x 24 of user data memory; and a 1M x 8 flash memory. Setup variable I52 should be set and saved at
7 for 80 MHz operation.
• Option 5C3 provides an 80 MHz DSP56303 CPU (120 MHz PMAC equivalent) with 8k x 24 of
internal memory, an expanded external 512k x 24 of compiled/assembled program memory, an
expanded external 512k x 24 of user data memory, and a 4M x 8 flash memory. Setup variable I52
should be set and saved at 7 for 80 MHz operation.
• Option 5D0 provides a 100 MHz DSP56309 CPU (150 MHz PMAC equivalent) with 34k x 24 of
internal memory, an external 128k x24 of compiled/assembled program memory, an external 128k x
24 of user data memory; and a 1M x 8 flash memory. Setup variable I52 should be set and saved at 9
for 100 MHz operation.
• Option 5D3 provides a 100 MHz DSP56309 CPU (150 MHz PMAC equivalent) with 34k x 24 of
internal memory, an expanded external 512k x 24 of compiled/assembled program memory, an
expanded external 512k x 24 of user data memory, and a 4M x 8 flash memory. Setup variable I52
should be set and saved at 9 for 100 MHz operation.

Option 8: High-Accuracy Clock Crystal

The UMAC-CPCI Turbo CPU board 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: Serial Port Configuration

The UMAC-CPCI Turbo CPU board comes standard with a single RS-232/422 serial port, a second serial
port can be added.
• Option 9T adds an auxiliary RS-232 port on the CPU board. The key components added are ICs U28
and U43.

Option 10: Firmware Revision Specification

Normally the UMAC-CPCI Turbo CPU board is provided with the newest released firmware revision.
Some users may wish to “freeze” their designs on an older revision. A label on the U10 flash memory IC
shows the firmware revision loaded at the factory. The VERSION command can be used to report what
firmware revision is currently installed.
• Option 10 provides for a user-specified firmware version.

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.
• Option 16A provides a 32k x 24 bank of battery-backed parameter RAM in components U17, U18,
and U19 and a “can-stack” lithium battery in component BT1. While the average expected battery
life is over five years, a yearly replacement schedule is recommended. Replacement batteries can be
ordered from Delta Tau as Acc-1LS (Part # 100-0QTC85-000).