Product comparison guide: 
System-on-Chips

 
ETRAX 100LX ETRAX FS
Package 256 pin PBGA 256 pin PBGA
Size 27x27 mm 27x27 mm
CPU 100 MIPS 32-bit RISC 200 MIPS 32-bit RISC
Cache memory 8 kB on-chip 2x16 kB on-chip
Internal RAM - 128 kB
Internal Flash - -
Memory Management Unit (MMU) 4 GB / user process 4 GB / user process
Ethernet controller Single 10/100 Mbit/s Dual 10/100 Mbit/s
Direct Memory Access (DMA) 10 DMA channels w. 64 byte FIFO 10 DMA channels w. 64 byte FIFO
  200 MB/s total peak 1.6 GB/s total peak
Serial interfaces    
 - Asynchronous ports 4 4
 - Synchronous ports 2 2
USB interfaces 2 USB 1.1 ports See I/O processor
ATA interfaces 4 EIDE/ATA-2 ports 4 EIDE/ATA-2 ports
SCSI interfaces 2x8-bit wide or 1x16-bit wide See I/O processor
Parallel interfaces 2 Parallel ports See I/O processor
I/O processor - Serial 1
Capable of microcode-based implementations of various I/O protocols. Some examples are listed here.   Parallel 1
  PC Card/
Cardbus/PCI
  USB 1.1 Host
  USB 2.0 FS/HS host and device 1
  ATA/EIDE 1
  SCSI 1
Bus interfaces & memory controllers SDRAM SDRAM
  EDO DRAM SRAM
  SRAM EPROM
  EPROM NOR FlashPROM
  NOR FlashPROM NAND FlashPROM
On-Chip Debug - In circuit debug with JTAG
Hardware accelerated encryption - AES, DES, 3DES, SHA-1, MD-5 and IP checksum

1) The I/O protocol is not yet implemented.