4-2
MC9328MX1 Reference Manual
MOTOROLA
ARM920T Processor
Figure 4-1. ARM920T Core Functional Block Diagram
4.2 ARM920T Macrocell
The ARM920T macrocell is based on the ARM9TDMI™ Harvard architecture processor core, with an
efficient 5-stage pipeline. The architecture of the processor core or integer unit is described in more detail
later in this chapter.
To reduce the effect of main memory bandwidth and latency on performance, the ARM920T processor
includes:
•
Instruction cache
•
Data cache
•
MMU
•
TLBs
•
Write buffer
•
Physical address TAG RAM
4.2.1 Caches
Two 16 kbyte caches are implemented, one for instructions, the other for data, both with an 8-word line
size. A 32-bit data bus connects each cache to the ARM9TDMI core allowing a 32-bit instruction to be
fetched and fed into the instruction Decode stage of the pipeline at the same time as a 32-bit data access for
the Memory stage of the pipeline.
Summary of Contents for DragonBall MC9328MX1
Page 68: ...1 12 MC9328MX1 Reference Manual MOTOROLA Introduction ...
Page 86: ...2 18 MC9328MX1 Reference Manual MOTOROLA Signal Descriptions and Pin Assignments ...
Page 116: ...3 30 MC9328MX1 Reference Manual MOTOROLA Memory Map ...
Page 126: ...4 10 MC9328MX1 Reference Manual MOTOROLA ARM920T Processor ...
Page 160: ...8 8 MC9328MX1 Reference Manual MOTOROLA System Control ...
Page 272: ...13 32 MC9328MX1 Reference Manual MOTOROLA DMA Controller ...
Page 281: ...Programming Model MOTOROLA Watchdog Timer Module 14 9 ...
Page 282: ...14 10 MC9328MX1 Reference Manual MOTOROLA Watchdog Timer Module ...
Page 300: ...15 18 MC9328MX1 Reference Manual MOTOROLA Analog Signal Processor ASP ...
Page 438: ...18 16 MC9328MX1 Reference Manual MOTOROLA Serial Peripheral Interface Modules SPI 1 and SPI 2 ...
Page 478: ...19 40 MC9328MX1 Reference Manual MOTOROLA LCD Controller ...
Page 574: ...21 32 MC9328MX1 Reference Manual MOTOROLA Memory Stick Host Controller MSHC Module ...
Page 598: ...23 16 MC9328MX1 Reference Manual MOTOROLA Real Time Clock RTC ...
Page 670: ...24 72 MC9328MX1 Reference Manual MOTOROLA SDRAM Memory Controller ...
Page 726: ...25 56 MC9328MX1 Reference Manual MOTOROLA SmartCard Interface Module SIM ...
Page 736: ...26 10 MC9328MX1 Reference Manual MOTOROLA General Purpose Timers ...
Page 854: ...29 18 MC9328MX1 Reference Manual MOTOROLA I2C Module ...
Page 900: ...30 46 MC9328MX1 Reference Manual MOTOROLA Synchronous Serial Interface SSI ...
Page 942: ...32 26 MC9328MX1 Reference Manual MOTOROLA GPIO Module and I O Multiplexer IOMUX ...