CCS C Software and Maintenance Offers
FAQFAQ   FAQForum Help   FAQOfficial CCS Support   SearchSearch  RegisterRegister 

ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

CCS does not monitor this forum on a regular basis.

Please do not post bug reports on this forum. Send them to support@ccsinfo.com
Dual SPI

 
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion
View previous topic :: View next topic  
Author Message
Ray



Joined: 22 Jul 2007
Posts: 12
Location: Australia

View user's profile Send private message

Dual SPI
PostPosted: Wed Feb 29, 2012 6:17 am     Reply with quote
Hi,
I've noticed that a few flash chips e.g. W25Q16BVSSIG, M25PX16-VMN6TP now run 2 and even dual X 2 SPI's via doubling up the pin directions e.g. making SDI and SDO bidirectional unstead of unidirectional. has anyone out there had experience with this on a microchip or have any thoughts about its feasability?

Cheers
temtronic



Joined: 01 Jul 2010
Posts: 9127
Location: Greensville,Ontario

View user's profile Send private message

PostPosted: Wed Feb 29, 2012 8:21 am     Reply with quote
Well..if everything else is constant(ie: clocking speed), you've cut the overall data rate in HALF !!

'Normal ' SPI allows for simultaneous data transfer to and from the peripheral,giving very,very fast performance. If you go 'halfduplex', the micro has to send data,then reconfigure to receive, wait for data,then do 'something' then reset to transmit.....
Display posts from previous:   
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group