please dont rip this site

CUMP Home

Currently under discussion on the CUMP list

We have finally reached a consensus on the CUMP BUS rev. 1.0 (we've been in 0.x up until now)

Here's the 1st release revision of the CUMP bus:

CUMP Bus rev.4
IDC Pin # Signal name IDC Pin #
1 TX/BD0 BD1/RX 2
3 BD2 BD3 4
5 BD4 BD5 6
7 BD6 BD7 8
9 ICP/BD8 BD9/OCP 10
11 PP0/BD10 BD11/PP1 12
13 PP2/BD12 BD13/PP3 14
15 PP4/BD14 BD15/PP5 16
17 PP6/BD16 BD17/PP7 18
19 PCK#/BD18 BD19/RW# 20
21 ALE#/BD20 BD21/DBR 22
23 IRQ#/BD22 BD23/SDI 24
25 GND BD24/SDO 26
27 5V BD25/SCK 28
29 VIO BD26/SCL 30
31 VAR2 BD27/SDA 32
33 VAR1 BD28/VCK 34
35 IDD BD29/IDL 36
37 IDC NC 38
39 NC NC 40

Key

VAR: Variable Voltage
VCC: Supply voltage (5V/3V?)
GND: 0V
BD: BiDirectional signal
PP: Parallel Port signal
E: Parallel Port Enable (aka parallel port clock)
RW: Parallel Port Read/Write signal
ALE: Parallel Port Address Latch Enable
SDA: IIC Serial Data
SCL: IIC Serial Clock
SDI: SPI Serial Data In
SCK: SPI Serial Clock
SDO: SPI Serial Data Out
VCLK: Variable Clock source
TX: UART data send (MB centric)
RX: UART data receive (MB centric)
IDC: Serial ID clock
IDD: Serial ID data
IDL: Serial ID load
IRQ: Interrupt Request
NC: Not Connected

Notes:

The SDA and SCL lines may have to be put on the same lines as SDI and SCK repectively depending on the design and the MCUs available.

I think I forgot that the SPI protocol requires a #SS pin (slave select) that should be reflected in the next revision.

This section will grow larger, but due to the reprecussions of editing the very core of the CUMP architecture--the CUMP bus--nothing is solid right now.

See also:

file: /Techref/piclist/cump/hardware.htm, 3KB, , updated: 2005/3/29 11:24, local time: 2024/11/8 14:56, owner: BJM-bigfoot-486,
TOP NEW HELP FIND: 
3.142.136.229:LOG IN
©2024 PLEASE DON'T RIP! THIS SITE CLOSES OCT 28, 2024 SO LONG AND THANKS FOR ALL THE FISH!
 ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://www.piclist.com/techref/piclist/cump/hardware.htm"> CUMP hardware</A>
After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?
  PICList 2024 contributors:
o List host: MIT, Site host massmind.org, Top posters @none found
- Page Editors: James Newton, David Cary, and YOU!
* Roman Black of Black Robotics donates from sales of Linistep stepper controller kits.
* Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters.
* Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated!
* Contributors: Richard Seriani, Sr.
 
Quick, Easy and CHEAP! RCL-1 RS232 Level Converter in a DB9 backshell
Ashley Roll has put together a really nice little unit here. Leave off the MAX232 and keep these handy for the few times you need true RS232!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .