| Title: | Embedded and Real Time Modular Computing Conference |
| Moderator: | IRNBRU::GRANT |
| Created: | Tue Sep 05 1995 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 235 |
| Total number of notes: | 1091 |
A customer asks...
"What kind of line drivers are used on your 21064 PICMG CPU? What is
the tradeoff between speed and line length?"
I.e. are we strictly RS232 (max 50 feet/metres (?) at 19k2 or less),
DEC423 (a long way at quite respectable speeds) or somewhere in
between.
regards
john
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 212.1 | BBPBV1::WALLACE | john wallace @ bbp. +44 860 675093 | Fri Apr 18 1997 12:20 | 2 | |
Please? (Point me at somewhere I can get the engineering drawings, if
it helps answer the question cost-effectively)
| |||||
| 212.2 | IRNBRU::GRANT | Iain Grant, E&RT, DTN 823-3532 | Fri Apr 18 1997 13:13 | 17 | |
John,
The line driver is the MAXIM Max211E RS232 transceiver
Culled from vendors spec...
The drivers and receivers meet all EIA/TIA-232E and CCIT V.28
specifications at data rates upto 120kbps when loaded in accordance
with the EIA/TIA-232E specification. ( between 3kohm and 7kohm load
resistance, Load capaciatnce less than 2500pF)
No exact figure for line length I'm afraid.
| |||||
| 212.3 | BBPBV1::WALLACE | john wallace @ bbp. +44 860 675093 | Fri Apr 18 1997 18:12 | 1 | |
As they say on TV "that'll do nicely". | |||||