Ya he encontrado algo mas de informacion:
ARM9 Family
32-bit RISC processor with ARM® and Thumb® instruction sets
5-stage integer pipeline achieves 1.1 MIPS/MHz
Up to 300 MIPS (Dhrystone 2.1) in a typical 0.13µm process
Single 32-bit AMBA bus interface
MMU supporting Windows CE, Symbian OS, Linux, Palm OS (ARM920T and ARM922T)
Integrated instruction and data caches
Excellent debug support for SoC designers, including ETM interface
8-entry write buffer — avoids stalling the processor when writes to external memory are performed
Portable to latest 0.18µm, 0.15µm, 0.13µm silicon processes.
Cache Size
(Inst/Data) Tightly
Coupled
Memory Memory
Mgt Bus
Interface Thumb DSP Jazelle
ARM920T 16k/16k - MMU ASB Yes No No
ARM922T 8k/8k - MMU ASB Yes No No
Lo que no me queda claro es que si incorpora coprocesadores de apoyo para el sonido o los graficos..