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 #|
VAR: Variable Voltage
VCC: Supply voltage (5V/3V?)
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
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.
|file: /Techref/piclist/cump/hardware.htm, 3KB, , updated: 2005/3/29 12:24, local time: 2013/5/21 16:36,
|©2013 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?|
<A HREF="http://www.piclist.com/techref/piclist/cump/hardware.htm"> CUMP hardware</A>
|Did you find what you needed?|
PICList 2013 contributors:
o List host: MIT, Site host massmind.org, Top posters @20130521 RussellMc, IVP, Bob Blick, John Gardner, veegee, alan.b.pearce, Sean Breheny, Isaac Marino Bavaresco, Josh Koffman, Carl Denk,
* 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: None at this time. on-going support is MOST appreciated!
* Contributors: Richard Seriani, Sr.
Welcome to www.piclist.com!