INSTALLATION REQUIREMENTS/SPECIFICATIONS
Page 2-17
2.6 OPERATING SPECIFICATIONS
The operating speciļ¬cations for the SEHI are described in this section.
Cabletron Systems reserves the right to change these speciļ¬cations at
any time without notice.
GENERAL
Operating System Memory: 1.5 MB
Internal Processor: Intel i960 operating at 16 MHz
Ethernet Controller: National Semiconductor
DP83916
Non-Volatile RAM: 32 KB with battery back-up
EPROM: 64 KB
FLASH MEMORY: 1 MB
Delay Times (Start of Packets):
Twisted Pair to EPIM- A 1.10 microseconds
Twisted Pair to Twisted Pair 1.00 microseconds
EPIM-A to Twisted Pair 1.00 microseconds
Delay Times (JAM):
Twisted Pair to EPIM-A 960 nanoseconds
Preamble:
Input: Minimum of 40 bits required
Output: 64 bits min. (last 2 bits are 1, 1)
