The two companies had talked for a while, but those talks came to naught, and Cisco went ballistic and went to court over the allegation Apple had appropriated its telephonic name.
Cisco wants to injunct sales of any Apple iPhone, so it's possible we'll never find out which chip is inside, isn't it? µ
See Also
Apple goes all coy about which CPU is inside
Apple in talks with Cisco over iPhone
Cisco beats Apple to releasing the iPhone
Apple iPhone lacks FCC approval