[c-nsp] 1900 and 2900 series architecture documentation

[Jack Dawson]

Good day!

I am looking for the architecture documentation for the 1900 and 2900 series
documentation that is very much like:

http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a0080094e92.shtml


I am more interested in the information such as the Block Diagram, Basic
Operation, and Memory Structure Overview - Buffer Allocation.

I have searched the Cisco archives; additionally, I have also attempted to
search via Google with no results.

Thanks for any information, links, etc. that can be offered.