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Chapter 3 | Hardware |
CPU (U1)
The LittleBoard 550 offers three VIA Technologies Eden processor choices; high performance 1GHz ESP 10000 processor, 533MHz ESP 5000 processor, or the low cost, 300MHz ESP3000 processor.
ESP Processors
The ESP (0.13∝ or 0.15∝) processors at 1GHz, 533MHz, or 300MHz use 133MHz, 133MHz, or 66MHz FSB (front side bus) respectively, with 128kB Level 1 cache and 64kB Level 2 cache. The ESP processors require a heatsink, but no fan.
NOTE | A CPU fan connector is provided for your convenience to |
| accommodate any special requirements. See Table |
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Memory
The LittleBoard 550 memory consists of the following elements:
•SDRAM
•Flash memory
•Serial EEPROM (SEEP)
SDRAM Memory (DIMM1)
The LittleBoard 550 supports a single standard
•DIMM slot can support up to 2GB of memory
•Supports PC 133 (133MHz, 7.5ns) and PC 100 (100MHz, 10ns)
•+3.3V SDRAM
NOTE | Ampro recommends using only PC 133 (133MHz), 3.3V, 7.5ns, 168- |
| pin, SDRAM DIMM, but PC 100 (100MHz, 10ns) will function. PC |
| 133 provides the best performance for the Eden processors. |
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Flash Memory (U17)
There is an
Serial EEPROM (SEEP)
The
22 | Reference Manual | LittleBoard 550 |