Anybody ever dealt with the Sony Memory Stick?  It's used for their digital cameras, and comes in 4, 8, 16, 32, & 64 MB levels.

It's specs list the interface as serial 10-pin, what protocol does these "sticks" use?

The specs are listed below :
á       Memory Type - Flash memory (MSA-4A: 4MB)
á       Connector - 10-pin
á       Interface - Serial
á       Operating Voltage - 2.7V to 3.6V
á       Power Consumption - Average: Approx. 45mA; Standby: Approx. 130µA
á       Access Speed - Writing: Maximum 1.5MB/second; Standby: Maximum 2.45MB/sec
á       Operating Environment - 0¡C - 60¡C (non-condensing)
á       Dimensions (LxWx H) - Approx. 21.5 x 50 x 2.8mm
á       Weight - Approx. 4g (0.14 oz.)
á       Supplied Accessories - Memory Stick Storage Case, label, operating instructions

Jc.